Ajax Calls in asp.net

asp:   
function CheckGroupName() {
            var name = $('#<%= txtGroupName.ClientID %>').val();
            $.ajax({
                url: "CreateGroups.aspx/CheckGroupName",   // Current Page, Method 
                data: JSON.stringify({ name: name }), // parameter map as JSON 
                type: "POST", // data has to be POSTed 
                contentType: "application/json", // posting JSON content     
                dataType: "JSON",  // type of data is JSON (must be upper case!) 
                timeout: 10000,    // AJAX timeout 
                success: function (result) {
                    if (result == '{"d":"Yes"}') {
                      
                        alert('Entered Group Name alredy Exists for the account.Please Use a Differenet name to register.');
                        return false;
                    }
                },
                error: function (xhr, status) {
                    alert(status + " - " + xhr.responseText);
                }
            });

        }

aspx.cs:
  [WebMethod]
        public static string CheckGroupName(string name)
        {
            if (Activayt.Business.Group.IsExists(AccountID, name, _parent))
            {
              
                return "Yes";
            }
            else
            {
                return "";
            }
        }

Webservices in asp.net

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Data.SqlClient;
using System.Data;
using System.Configuration;

namespace Activayt.UI
{
    /// <summary>
    /// Summary description for WebService1
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
     [System.Web.Script.Services.ScriptService]
    public class WebService1 : System.Web.Services.WebService
    {
       [System.Web.Services.WebMethod(EnableSession=true)]
       [System.Web.Script.Services.ScriptMethod]
        public  string[] GetGroupName(string prefixText)
        {
            string s = Session["UserName"].ToString();
            SqlConnection cn = new SqlConnection();
            DataSet ds = new DataSet();
            DataTable dt = new DataTable();
            String strCn = ConfigurationManager.ConnectionStrings["SQLConString"].ToString();
            cn.ConnectionString = strCn;
            SqlCommand cmd = new SqlCommand();
            cmd.Connection = cn;
            cmd.CommandType = CommandType.Text;
            cmd.CommandText = "select Distinct Name from tbl_Groups G left outer join  tbl_GroupXUsers GU on G.GroupID=GU.GroupID where G.Status=1 and ((GU.UserID=(select UserID from tbl_Users where Email='" + Session["UserName"].ToString() + "') and MasterAccountID=(select AccountID from tbl_Accounts  where Name='" + Session["AccountName"].ToString() + "')) or CreatedBy='" + Session["UserName"].ToString() + "') and Name like @myParameter";
            cmd.Parameters.AddWithValue("@myParameter", "%" + prefixText + "%");

            try
            {
                cn.Open();
                cmd.ExecuteNonQuery();
                SqlDataAdapter da = new SqlDataAdapter(cmd);
                da.Fill(ds);
            }
            catch
            {
            }
            finally
            {
                cn.Close();
            }
            dt = ds.Tables[0];

            List<string> txtGroupNames = new List<string>();
            String dbValues;

            foreach (DataRow row in dt.Rows)
            {

                dbValues = row["Name"].ToString();
                dbValues = dbValues.ToLower();
                txtGroupNames.Add(dbValues);
            }

            return txtGroupNames.ToArray();
        }
       [System.Web.Services.WebMethod(EnableSession = true)]
       [System.Web.Script.Services.ScriptMethod]
       public string[] GetManagers(string prefixText)
       {
           string s = Session["UserName"].ToString();
           SqlConnection cn = new SqlConnection();
           DataSet ds = new DataSet();
           DataTable dt = new DataTable();
           String strCn = ConfigurationManager.ConnectionStrings["SQLConString"].ToString();
           cn.ConnectionString = strCn;
           SqlCommand cmd = new SqlCommand();
           cmd.Connection = cn;
           cmd.CommandType = CommandType.Text;
           cmd.CommandText = "select distinct Email from tbl_GroupXUsers GU inner join tbl_Groups G on G.GroupID=GU.GroupID inner join tbl_Users U on U.UserID=GU.UserID where GU.UserID=(select UserID from tbl_Users where Email='" + Session["UserName"].ToString() + "' and Status=1) and Role='manager' and G.Status=1 and MasterAccountID=(select AccountID from tbl_Accounts where Name='" + Session["AccountName"].ToString() + "') and Email like @myParameter";
           cmd.Parameters.AddWithValue("@myParameter", "%" + prefixText + "%");
           try
           {
               cn.Open();
               cmd.ExecuteNonQuery();
               SqlDataAdapter da = new SqlDataAdapter(cmd);
               da.Fill(ds);
           }
           catch
           {
           }
           finally
           {
               cn.Close();
           }
           dt = ds.Tables[0];

           List<string> txtManagers = new List<string>();
           String dbValues;

           foreach (DataRow row in dt.Rows)
           {

               dbValues = row["Email"].ToString();
               dbValues = dbValues.ToLower();
               txtManagers.Add(dbValues);
           }

           return txtManagers.ToArray();
       }
       [System.Web.Services.WebMethod(EnableSession = true)]
       [System.Web.Script.Services.ScriptMethod]
       public string[] GetAnalyst(string prefixText)
       {
           string s = Session["UserName"].ToString();
           SqlConnection cn = new SqlConnection();
           DataSet ds = new DataSet();
           DataTable dt = new DataTable();
           String strCn = ConfigurationManager.ConnectionStrings["SQLConString"].ToString();
           cn.ConnectionString = strCn;
           SqlCommand cmd = new SqlCommand();
           cmd.Connection = cn;
           cmd.CommandType = CommandType.Text;
           cmd.CommandText = "select distinct Email from tbl_GroupXUsers GU inner join tbl_Groups G on G.GroupID=GU.GroupID inner join tbl_Users U on U.UserID=GU.UserID where GU.UserID=(select UserID from tbl_Users where Email='" + Session["UserName"].ToString() + "' and Status=1) and Role='analyst' and G.Status=1  and MasterAccountID=(select AccountID from tbl_Accounts where Name='" + Session["AccountName"].ToString() + "') and  Email like @myParameter";
           cmd.Parameters.AddWithValue("@myParameter", "%" + prefixText + "%");

           try
           {
               cn.Open();
               cmd.ExecuteNonQuery();
               SqlDataAdapter da = new SqlDataAdapter(cmd);
               da.Fill(ds);
           }
           catch
           {
           }
           finally
           {
               cn.Close();
           }
           dt = ds.Tables[0];

           List<string> txtManagers = new List<string>();
           String dbValues;

           foreach (DataRow row in dt.Rows)
           {

               dbValues = row["Email"].ToString();
               dbValues = dbValues.ToLower();
               txtManagers.Add(dbValues);
           }

           return txtManagers.ToArray();
       }
       [System.Web.Services.WebMethod(EnableSession = true)]
       [System.Web.Script.Services.ScriptMethod]
       public string[] GetAdministrator(string prefixText)
       {
           string s = Session["UserName"].ToString();
           SqlConnection cn = new SqlConnection();
           DataSet ds = new DataSet();
           DataTable dt = new DataTable();
           String strCn = ConfigurationManager.ConnectionStrings["SQLConString"].ToString();
           cn.ConnectionString = strCn;
           SqlCommand cmd = new SqlCommand();
           cmd.Connection = cn;
           cmd.CommandType = CommandType.Text;
           cmd.CommandText = "select distinct Email from tbl_GroupXUsers GU inner join tbl_Groups G on G.GroupID=GU.GroupID inner join tbl_Users U on U.UserID=GU.UserID where GU.UserID=(select UserID from tbl_Users where Email='" + Session["UserName"].ToString() + "' and Status=1) and Role='administrator' and G.Status=1 and MasterAccountID=(select AccountID from tbl_Accounts where Name='" + Session["AccountName"].ToString() + "') and Email like @myParameter";
           cmd.Parameters.AddWithValue("@myParameter", "%" + prefixText + "%");

           try
           {
               cn.Open();
               cmd.ExecuteNonQuery();
               SqlDataAdapter da = new SqlDataAdapter(cmd);
               da.Fill(ds);
           }
           catch
           {
           }
           finally
           {
               cn.Close();
           }
           dt = ds.Tables[0];

           List<string> txtManagers = new List<string>();
           String dbValues;

           foreach (DataRow row in dt.Rows)
           {

               dbValues = row["Email"].ToString();
               dbValues = dbValues.ToLower();
               txtManagers.Add(dbValues);
           }

           return txtManagers.ToArray();
       }
       [System.Web.Services.WebMethod(EnableSession = true)]
       [System.Web.Script.Services.ScriptMethod]
       public string[] GetMembers(string prefixText)
       {
           SqlConnection cn = new SqlConnection();
           DataSet ds = new DataSet();
           DataTable dt = new DataTable();
           String strCn = ConfigurationManager.ConnectionStrings["SQLConString"].ToString();
           cn.ConnectionString = strCn;
           SqlCommand cmd = new SqlCommand();
           cmd.Connection = cn;
           cmd.CommandType = CommandType.Text;
           cmd.CommandText = "select distinct Email from tbl_Roles R inner join tbl_RoleXUsers RU on RU.RoleID=R.RoleID inner join tbl_Users U on U.UserID=RU.UserID where RU.UserID="+Convert.ToInt64(Session["UserID"])+" and R.MasterAccountID="+Convert.ToInt64(Session["AccountID"])+" and Email like @myParameter";
           cmd.Parameters.AddWithValue("@myParameter", "%" + prefixText + "%");

           try
           {
               cn.Open();
               cmd.ExecuteNonQuery();
               SqlDataAdapter da = new SqlDataAdapter(cmd);
               da.Fill(ds);
           }
           catch
           {
           }
           finally
           {
               cn.Close();
           }
           dt = ds.Tables[0];
           List<string> txtMembers = new List<string>();
           String dbValues;
           foreach (DataRow row in dt.Rows)
           {
               dbValues = row["Email"].ToString();
               dbValues = dbValues.ToLower();
               txtMembers.Add(dbValues);
           }
           return txtMembers.ToArray();
       }
    }
}

Captcha in asp.net using c#.net

mscaptcha.xml:
<?xml version="1.0"?>
<doc>
    <assembly>
        <name>MSCaptcha</name>
    </assembly>
    <members>
        <member name="M:MSCaptcha.CaptchaControl.ValidateCaptcha(System.String)">
            <summary>
            Validate the user's text against the CAPTCHA text
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaControl.HtmlColor(System.Drawing.Color)">
            <summary>
            returns HTML-ized color strings
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaControl.CssStyle">
            <summary>
            returns css "style=" tag for this control
            based on standard control visual properties
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaControl.Render(System.Web.UI.HtmlTextWriter)">
            <summary>
            render raw control HTML to the page
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaControl.GenerateNewCaptcha">
            <summary>
            generate a new captcha and store it in the ASP.NET Cache by unique GUID
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaControl.System#Web#UI#IPostBackDataHandler#LoadPostData(System.String,System.Collections.Specialized.NameValueCollection)">
            <summary>
            Retrieve the user's CAPTCHA input from the posted data
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaControl.BackColor">
            <summary>
            Background color for the captcha image
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaControl.FontColor">
            <summary>
            Color of captcha text
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaControl.NoiseColor">
            <summary>
            Color for dots in the background noise
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaControl.LineColor">
            <summary>
            Color for the background lines of the captcha image
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaControl.IsDesignMode">
            <summary>
            are we in design mode?
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaImage.RenderImage">
            <summary>
            Forces a new Captcha image to be generated using current property value settings.
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaImage.RandomFontFamily">
            <summary>
            Returns a random font family from the font whitelist
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaImage.GenerateRandomText">
            <summary>
            generate random text for the CAPTCHA
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaImage.RandomPoint(System.Int32,System.Int32,System.Int32,System.Int32)">
            <summary>
            Returns a random point within the specified x and y ranges
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaImage.RandomPoint(System.Drawing.Rectangle)">
            <summary>
            Returns a random point within the specified rectangle
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaImage.TextPath(System.String,System.Drawing.Font,System.Drawing.Rectangle)">
            <summary>
            Returns a GraphicsPath containing the specified string and font
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaImage.GetFont">
            <summary>
            Returns the CAPTCHA font in an appropriate size
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaImage.GenerateImagePrivate">
            <summary>
            Renders the CAPTCHA image
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaImage.WarpText(System.Drawing.Drawing2D.GraphicsPath,System.Drawing.Rectangle)">
            <summary>
            Warp the provided text GraphicsPath by a variable amount
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaImage.AddNoise(System.Drawing.Graphics,System.Drawing.Rectangle)">
            <summary>
            Add a variable level of graphic noise to the image
            </summary>
        </member>
        <member name="M:MSCaptcha.CaptchaImage.AddLine(System.Drawing.Graphics,System.Drawing.Rectangle)">
            <summary>
            Add variable level of curved lines to the image
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.UniqueId">
            <summary>
            Returns a GUID that uniquely identifies this Captcha
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.RenderedAt">
            <summary>
            Returns the date and time this image was last rendered
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.Font">
            <summary>
            Font family to use when drawing the Captcha text. If no font is provided, a random font will be chosen from the font whitelist for each character.
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.FontWarp">
            <summary>
            Amount of random warping to apply to the Captcha text.
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.BackgroundNoise">
            <summary>
            Amount of background noise to apply to the Captcha image.
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.TextChars">
            <summary>
            A string of valid characters to use in the Captcha text.
            A random character will be selected from this string for each character.
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.TextLength">
            <summary>
            Number of characters to use in the Captcha text.
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.Text">
            <summary>
            Returns the randomly generated Captcha text.
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.Width">
            <summary>
            Width of Captcha image to generate, in pixels
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.Height">
            <summary>
            Height of Captcha image to generate, in pixels
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.FontWhitelist">
            <summary>
            A semicolon-delimited list of valid fonts to use when no font is provided.
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.BackColor">
            <summary>
            Background color for the captcha image
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.FontColor">
            <summary>
            Color of captcha text
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.NoiseColor">
            <summary>
            Color for dots in the background noise
            </summary>
        </member>
        <member name="P:MSCaptcha.CaptchaImage.LineColor">
            <summary>
            Color for the background lines of the captcha image
            </summary>
        </member>
        <member name="T:MSCaptcha.CaptchaImage.FontWarpFactor">
            <summary>
            Amount of random font warping to apply to rendered text
            </summary>
        </member>
        <member name="T:MSCaptcha.CaptchaImage.BackgroundNoiseLevel">
            <summary>
            Amount of background noise to add to rendered image
            </summary>
        </member>
        <member name="T:MSCaptcha.CaptchaImage.LineNoiseLevel">
            <summary>
            Amount of curved line noise to add to rendered image
            </summary>
        </member>
    </members>
</doc>

web.config:

<system.web>
   <httpHandlers>
      <add verb="GET" path="CaptchaImage.axd" type="MSCaptcha.CaptchaImageHandler, MSCaptcha"/>
    </httpHandlers>
</system.web>


Adding Captcha dll :


  <cc1:CaptchaControl ID="Captcha1" runat="server" CaptchaBackgroundNoise="Low" CaptchaLength="5"
                                                        CaptchaHeight="60" CaptchaWidth="160" CaptchaLineNoise="None" CaptchaMinTimeout="5"
                                                        CaptchaMaxTimeout="240" FontColor="#529E00" BackColor="Silver" />

dynamically create levels in component art grid

 
.aspx:
 <ComponentArt:DataGrid runat="server" ID="grdGroups" Width="785" ShowFooter="true"
            RunningMode="Server" ClientIDMode="AutoID" AutoTheming="true" PagerStyle="Numbered">
        </ComponentArt:DataGrid>
   
.aspx.cs:




 if (!Page.IsPostBack)
            {
buildTopLevel();
                    grdGroups.DataBind();
}
private void buildTopLevel()
        {
            if (Session["UserName"] != null)
            {
                grdGroups.ID = "Grid1";
                grdGroups.Width = 750;
                grdGroups.ShowFooter = true;
                grdGroups.AutoTheming = true;
                // grid.ClientIDMode = ClientIDMode.AutoID;
                grdGroups.PagerStyle = ComponentArt.Web.UI.GridPagerStyle.Numbered;
                DataSet ds = new DataSet();
                List<GroupDO> objListGroupDO = new List<GroupDO>();
                ObjGroupDO.AccountID = Convert.ToInt64(Session["AccountID"]);
                ObjGroupDO.UEmail = Session["UserName"].ToString();
                objListGroupDO = Group.SelectAll(ObjGroupDO.AccountID, ObjGroupDO.UEmail);
                ds = ConvertListToDataSet(objListGroupDO);
                ViewState["Data"] = ds;
                if (ds.Tables[0].Rows.Count > 0)
                {
                    int levels = Convert.ToInt32(ds.Tables[0].Compute("max(Level)", string.Empty));
                    objListGroupDO.Clear();
                    objListGroupDO = Activayt.Business.Group.SelectGroups(ObjGroupDO.AccountID, ObjGroupDO.UEmail);
                    ds = null;
                    ds = ConvertListToDataSet(objListGroupDO);
                    grdGroups.Levels.Clear();
                    for (int i = 0; i < levels; i++)
                    {
                        GridLevel gridLevel = new GridLevel();
                        grdGroups.Levels.Add(gridLevel);
                        grdGroups.Levels[i].DataKeyField = "GroupID";
                        GridColumn column1 = new GridColumn();
                        column1.DataField = "GroupName";
                        GridColumn column2 = new GridColumn();
                        column2.DataField = "Administrator";
                        GridColumn column3 = new GridColumn();
                        column3.DataField = "Manager";
                        GridColumn column4 = new GridColumn();
                        column4.DataField = "Analyst";
                        GridColumn column5 = new GridColumn();
                        column5.DataField = "GroupID";
                        gridLevel.Columns.Add(column1);
                        gridLevel.Columns.Add(column2);
                        gridLevel.Columns.Add(column3);
                        gridLevel.Columns.Add(column4);
                        gridLevel.Columns.Add(column5);
                        grdGroups.Levels[i].Columns[4].Visible = false;
                    }
                    grdGroups.DataSource = ds.Tables[0];
                    int i1 = grdGroups.Levels.Count;
                }
            }
        }
        public void OnNeedRebind(object sender, EventArgs oArgs)
        {
            grdGroups.DataBind();
        }
        public void OnNeedDataSource(object sender, EventArgs oArgs)
        {
            buildTopLevel();
        }
        public void OnNeedChildData(object sender, ComponentArt.Web.UI.GridNeedChildDataSourceEventArgs args)
        {
            DataSet ds=(DataSet)ViewState["Data"];
            int Level = Convert.ToInt32(ds.Tables[0].Compute("max(Level)", string.Empty));
            for (int i = 0; i < Level; i++)
            {
                if (args.Item.Level == i)
                {
                    DataView dv = ds.Tables[0].DefaultView;
                    dv.RowFilter = "ParentGroupID=" + args.Item["GroupID"];
                    args.DataSource = dv.ToTable();
                }

            }

        }
        public void OnPageChanged(object sender, ComponentArt.Web.UI.GridPageIndexChangedEventArgs oArgs)
        {
            grdGroups.CurrentPageIndex = oArgs.NewIndex;
        }
        public void OnSort(object sender, ComponentArt.Web.UI.GridSortCommandEventArgs oArgs)
        {
            grdGroups.Sort = oArgs.SortExpression;
        }
        #region Web Form Designer generated code
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: This call is required by the ASP.NET Web Form Designer.
            //
            InitializeComponent();
            base.OnInit(e);
        }

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.Load += new System.EventHandler(this.Page_Load);
            grdGroups.NeedRebind += new ComponentArt.Web.UI.Grid.NeedRebindEventHandler(OnNeedRebind);
            grdGroups.NeedDataSource += new ComponentArt.Web.UI.Grid.NeedDataSourceEventHandler(OnNeedDataSource);
            grdGroups.NeedChildDataSource += new ComponentArt.Web.UI.Grid.NeedChildDataSourceEventHandler(OnNeedChildData);
            grdGroups.PageIndexChanged += new ComponentArt.Web.UI.Grid.PageIndexChangedEventHandler(OnPageChanged);
            grdGroups.SortCommand += new ComponentArt.Web.UI.Grid.SortCommandEventHandler(OnSort);
        }
        #endregion

  private void buildTopLevel()
        {
            if (Session["UserName"] != null)
            {
                grdGroups.ID = "Grid1";
                grdGroups.Width = 750;
                grdGroups.ShowFooter = true;
                grdGroups.AutoTheming = true;
                // grid.ClientIDMode = ClientIDMode.AutoID;
                grdGroups.PagerStyle = ComponentArt.Web.UI.GridPagerStyle.Numbered;
                DataSet ds = new DataSet();
                List<GroupDO> objListGroupDO = new List<GroupDO>();
                ObjGroupDO.AccountID = Convert.ToInt64(Session["AccountID"]);
                ObjGroupDO.UEmail = Session["UserName"].ToString();
                objListGroupDO = Group.SelectAll(ObjGroupDO.AccountID, ObjGroupDO.UEmail);
                ds = ConvertListToDataSet(objListGroupDO);
                ViewState["Data"] = ds;
                if (ds.Tables[0].Rows.Count > 0)
                {
                    int levels = Convert.ToInt32(ds.Tables[0].Compute("max(Level)", string.Empty));
                    objListGroupDO.Clear();
                    objListGroupDO = Activayt.Business.Group.SelectGroups(ObjGroupDO.AccountID, ObjGroupDO.UEmail);
                    ds = null;
                    ds = ConvertListToDataSet(objListGroupDO);
                    grdGroups.Levels.Clear();
                    for (int i = 0; i < levels; i++)
                    {
                        GridLevel gridLevel = new GridLevel();
                        grdGroups.Levels.Add(gridLevel);
                        grdGroups.Levels[i].DataKeyField = "GroupID";
                        GridColumn column1 = new GridColumn();
                        column1.DataField = "GroupName";
                        GridColumn column2 = new GridColumn();
                        column2.DataField = "Administrator";
                        GridColumn column3 = new GridColumn();
                        column3.DataField = "Manager";
                        GridColumn column4 = new GridColumn();
                        column4.DataField = "Analyst";
                        GridColumn column5 = new GridColumn();
                        column5.DataField = "GroupID";
                        gridLevel.Columns.Add(column1);
                        gridLevel.Columns.Add(column2);
                        gridLevel.Columns.Add(column3);
                        gridLevel.Columns.Add(column4);
                        gridLevel.Columns.Add(column5);
                        grdGroups.Levels[i].Columns[4].Visible = false;
                    }
                    grdGroups.DataSource = ds.Tables[0];
                    int i1 = grdGroups.Levels.Count;
                }
            }
        }
        public void OnNeedRebind(object sender, EventArgs oArgs)
        {
            grdGroups.DataBind();
        }
        public void OnNeedDataSource(object sender, EventArgs oArgs)
        {
            buildTopLevel();
        }
        public void OnNeedChildData(object sender, ComponentArt.Web.UI.GridNeedChildDataSourceEventArgs args)
        {
            DataSet ds=(DataSet)ViewState["Data"];
            int Level = Convert.ToInt32(ds.Tables[0].Compute("max(Level)", string.Empty));
            for (int i = 0; i < Level; i++)
            {
                if (args.Item.Level == i)
                {
                    DataView dv = ds.Tables[0].DefaultView;
                    dv.RowFilter = "ParentGroupID=" + args.Item["GroupID"];
                    args.DataSource = dv.ToTable();
                }

            }

        }
        public void OnPageChanged(object sender, ComponentArt.Web.UI.GridPageIndexChangedEventArgs oArgs)
        {
            grdGroups.CurrentPageIndex = oArgs.NewIndex;
        }
        public void OnSort(object sender, ComponentArt.Web.UI.GridSortCommandEventArgs oArgs)
        {
            grdGroups.Sort = oArgs.SortExpression;
        }
        #region Web Form Designer generated code
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: This call is required by the ASP.NET Web Form Designer.
            //
            InitializeComponent();
            base.OnInit(e);
        }

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.Load += new System.EventHandler(this.Page_Load);
            grdGroups.NeedRebind += new ComponentArt.Web.UI.Grid.NeedRebindEventHandler(OnNeedRebind);
            grdGroups.NeedDataSource += new ComponentArt.Web.UI.Grid.NeedDataSourceEventHandler(OnNeedDataSource);
            grdGroups.NeedChildDataSource += new ComponentArt.Web.UI.Grid.NeedChildDataSourceEventHandler(OnNeedChildData);
            grdGroups.PageIndexChanged += new ComponentArt.Web.UI.Grid.PageIndexChangedEventHandler(OnPageChanged);
            grdGroups.SortCommand += new ComponentArt.Web.UI.Grid.SortCommandEventHandler(OnSort);
        }
        #endregion

levels in component art grid in asp.net using c#.net

 if (!Page.IsPostBack)
            {
  buildTopLevel();
                        grdGroups.DataBind();
}   
 private void buildTopLevel()
        {
            if (Session["UserName"] != null)
            {
                DataSet ds = new DataSet();
                List<GroupDO> objListGroupDO = new List<GroupDO>();
                ObjGroupDO.AccountID = Convert.ToInt64(Session["AccountID"]);
                ObjGroupDO.UEmail = Session["UserName"].ToString();
                objListGroupDO = Activayt.Business.Group.SelectGroups(ObjGroupDO.AccountID, ObjGroupDO.UEmail);
                ds = ConvertListToDataSet(objListGroupDO);
                grdGroups.DataSource = ds;
            }
       
        }
 public void OnNeedRebind(object sender, EventArgs oArgs)
        {
            grdGroups.DataBind();
        }
        public void OnNeedDataSource(object sender, EventArgs oArgs)
        {
            buildTopLevel();
        }
        public void OnNeedChildData(object sender, ComponentArt.Web.UI.GridNeedChildDataSourceEventArgs args)
        {
            ObjGroupDO.UEmail = Session["UserName"].ToString();
            ObjGroupDO.AccountID =Convert.ToInt64(Session["AccountID"]);
            List<GroupDO> objListGroups=Group.SelectAll(ObjGroupDO.AccountID,ObjGroupDO.UEmail);
            DataSet ds = ConvertListToDataSet(objListGroups);
            if (args.Item.Level == 0)
            {
                DataView dv = ds.Tables[0].DefaultView;
                dv.RowFilter = "ParentGroupID=" + args.Item["GroupID"];
                args.DataSource = dv.ToTable();
            }
            else if (args.Item.Level == 1)
            {
                DataView dv = ds.Tables[0].DefaultView;
                dv.RowFilter = "ParentGroupID=" + args.Item["GroupID"];
                args.DataSource = dv.ToTable();
            }
        }
        #region Web Form Designer generated code
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: This call is required by the ASP.NET Web Form Designer.
            //
            InitializeComponent();
            base.OnInit(e);
        }
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.Load += new System.EventHandler(this.Page_Load);
            grdGroups.NeedRebind += new ComponentArt.Web.UI.Grid.NeedRebindEventHandler(OnNeedRebind);
            grdGroups.NeedDataSource += new ComponentArt.Web.UI.Grid.NeedDataSourceEventHandler(OnNeedDataSource);
            grdGroups.NeedChildDataSource += new ComponentArt.Web.UI.Grid.NeedChildDataSourceEventHandler(OnNeedChildData);

        }
        #endregion

Mail Sending in asp.net

 <system.net>
    <mailSettings>
      <smtp>
        <network host="smtp.gmail.com" port="25" userName="emai address" password="emaipassword"/>
      </smtp>
    </mailSettings>
  </system.net>
<appsettings>
<add  key="Mail From" value=" From Email Address"/>
<add  key="Mail From Name" value=" From Name"/>
</appsettings>
 private void SendConfirmMail(string GroupName,string AccountName,string Email,string RoleName)
        {
                System.Net.Mail.MailMessage iMailMessage = new System.Net.Mail.MailMessage();
                SmtpClient smtp = new SmtpClient();
                if (ConfigurationManager.AppSettings["MailFrom"] != null)
                {
                    StringBuilder sb = new StringBuilder();
                    sb.Append("<div style=\"display: block; background: #FFFFFF; width: 650px; float: left; border: 10px solid #ccc;\">");
                    sb.Append("<table style=\"font-family:Arial; font-size:12px;\"><tr><td>");
                    sb.Append("<img alt=\"Activayt\" src=\"http://202.53.10.34:591/images/logo-new.png\" width=\"250px\" height=\"64px\" border=\"none\"/></td></tr><tr><td><br />");
                    sb.Append("<div style=\"width: auto; line-height: 23px; min-width: 104px; height: 24px; background: #3DADE1; ");
                    sb.Append("font-family: Arial; font-size: 13px; font-weight: bold; text-align: left; color: #FFFFFF; ");
                    sb.Append("vertical-align: middle; float: left; padding: 0px 15px 0px 15px;line-height:13.25px;\">Added to <strong>" + GroupName + "</strong> as    " + RoleName + "</div></td></tr><tr>");
                    sb.Append("<td>&nbsp;&nbsp;&nbsp;Dear <strong> &nbsp;"+ Email +"&nbsp; </strong> ,</td></tr><tr><td>");
                    sb.Append("The &nbsp;&nbsp;<strong>Account Manager</strong>&nbsp;&nbsp;of &nbsp;&nbsp;&nbsp;<strong>" + AccountName + "</strong>&nbsp;&nbsp;&nbsp; has been added you on Activayt.com as Group" + RoleName + ".</td></tr></table>");
                    sb.Append("<table width=\"650px\" style=\"font-family:Arial; font-size:12px;\"><tr><td><strong></strong></td>");
                    sb.Append("<td></td><td></td></tr><tr><td><strong></strong></td><td></td>");
                    sb.Append("<td></td></tr><tr><td><strong></strong></td><td></td><td></td></tr></table>");
                    sb.Append("<table width=\"650px\" style=\"font-family:Arial; font-size:12px;\"><tr><td>");
                    sb.Append("&nbsp;&nbsp;&nbsp;Please <a href=\"http://202.53.10.34:591/UseCaseHelp.aspx?RN=" + Crypto.ActionEncrypt(RoleName) + "\" style=\"color: #0000cc;\" target=\"_blank\">Click Here</a> to Start exploring your new role on Activayt.com</td></tr><tr><td><br />");
                    sb.Append("&nbsp;Thanks &amp; Regards</td></tr><tr><td>&nbsp;Activayt  Team</td></tr></table></div>");
                    iMailMessage.From = new MailAddress(ConfigurationManager.AppSettings["MailFrom"].ToString(), ConfigurationManager.AppSettings["MailFromName"].ToString());
                    iMailMessage.To.Add(new MailAddress(Email));
                    iMailMessage.IsBodyHtml = true;
                    iMailMessage.Body = sb.ToString();
                    iMailMessage.Subject = "You are added as a Group  " + ObjGroupDO.Role;
                    smtp.Send(iMailMessage);
                }
                else
                {

                }
        }