In this article I’m going to explain how to create GridView header row programmatically in ASP.NET using C#.

      I got one requirement that I have to create GridView header row programmatically. In my scenario I have to create Multiple Header row which includes header style. It’s very easy once I figure out what the proper event in the page lifecycle to use. I have used OnRowCreated="gvEmployee_RowCreated" event to achieve the task.

       In this demo I have used XML to bind GridView. After binding the GridView we have to create OnRowCreated  event.

 

Sample code: 

protected void gvEmployee_RowCreated(object sender, GridViewRowEventArgs e)

    {

        if (e.Row.RowType == DataControlRowType.Header)

        {

              …

             }

    }

 

 GridViewRow class is used to create GridView rows which includes DataRow, EmptyDatarow, Footer, Header, Pager and Separator.

 

Sample code:

GridViewRow HeaderRow = new GridViewRow(1, 0, DataControlRowType.Header,                                                                                                                                                                                                                                   DataControlRowState.Insert);

             TableCell class is used to create cell which will be added to corresponding Header row.

Sample code:

             TableCell HeaderCell2 = new TableCell();

            HeaderCell2.Text = "Personal Details";

            HeaderCell2.ColumnSpan = 2;

            HeaderRow.Cells.Add(HeaderCell2);

 

          After we have to add Header row to the GridView. 

Sample code: 

gvEmployee.Controls[0].Controls.AddAt(0, HeaderRow);

 

Design your aspx page like this

Designer source code:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title>gridview header</title> 

    <style type="text/css">

    .header

    {

         background-color:#3E3E3E;        

         font-family:Calibri;

         color:White;

         text-align:center;        

    }

    </style>

</head>

<body>

    <form id="form1" runat="server">

    <div>

         <asp:GridView ID="gvEmployee" runat="server" AutoGenerateColumns="false" Width="600px"

                       OnRowCreated="gvEmployee_RowCreated" ShowHeader="false">        

         <RowStyle Font-Names="Calibri" />

         <Columns>

         <asp:BoundField DataField="empid" />

         <asp:BoundField DataField="name" />        

         <asp:BoundField DataField="city" />

         <asp:BoundField DataField="country" />    

         <asp:BoundField DataField="designation" />    

         <asp:BoundField DataField="joiningdate" />

         </Columns>

        </asp:GridView>

    </div>    

    </form>

</body>

</html>

 

C# code:

 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data; 

public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            BindData();

        }

    }

    protected void BindData()

    {

        DataSet ds = new DataSet();

        ds.ReadXml(Server.MapPath("EmployeeDetails.xml"));

        if (ds != null && ds.HasChanges())

        {

            gvEmployee.DataSource = ds;

            gvEmployee.DataBind();

        }

    }

 

    protected void gvEmployee_RowCreated(object sender, GridViewRowEventArgs e)

    {

        if (e.Row.RowType == DataControlRowType.Header)

        {

            GridViewRow HeaderRow = new GridViewRow(1, 0, DataControlRowType.Header, DataControlRowState.Insert); 


            TableCell HeaderCell2 = new TableCell();

            HeaderCell2.Text = "Personal Details";

            HeaderCell2.ColumnSpan = 2;

            HeaderRow.Cells.Add(HeaderCell2);

 

            HeaderCell2 = new TableCell();

            HeaderCell2.Text = "Location";

            HeaderCell2.ColumnSpan = 2;

            HeaderRow.Cells.Add(HeaderCell2);

           

            HeaderCell2 = new TableCell();

            HeaderCell2.Text = "Office details";

            HeaderCell2.ColumnSpan = 2;

            HeaderRow.Cells.Add(HeaderCell2);

 

            gvEmployee.Controls[0].Controls.AddAt(0, HeaderRow);

 

            GridViewRow HeaderRow1 = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Insert);

 

            TableCell HeaderCell = new TableCell();

            HeaderCell.Text = "Employee-ID";           

            HeaderRow1.Cells.Add(HeaderCell);

 

            HeaderCell = new TableCell();

            HeaderCell.Text = "Name";           

            HeaderRow1.Cells.Add(HeaderCell);

                        

            HeaderCell = new TableCell();

            HeaderCell.Text = "City";         

            HeaderRow1.Cells.Add(HeaderCell);

 

            HeaderCell = new TableCell();

            HeaderCell.Text = "Country";           

            HeaderRow1.Cells.Add(HeaderCell);

 

            HeaderCell = new TableCell();

            HeaderCell.Text = "Designation";           

            HeaderRow1.Cells.Add(HeaderCell);

 

            HeaderCell = new TableCell();

            HeaderCell.Text = "Joining date";

            HeaderRow1.Cells.Add(HeaderCell);

 

            HeaderRow.Attributes.Add("class", "header");

            HeaderRow1.Attributes.Add("class", "header");

            gvEmployee.Controls[0].Controls.AddAt(1, HeaderRow1);

        }

    }

}

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