asp.net Gridview checkbox

We have added the CheckBox into Gridview Header template with autopostback enabled and onChecked event of it
we are checking all the checkboxs in gridview

Here is Gridview code

 

 

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">             <Columns>                 <asp:TemplateField HeaderText="ID">                     <ItemTemplate>                         <asp:Label ID="lblID" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"ID") %>'></asp:Label>                     </ItemTemplate>                                    </asp:TemplateField>                 <asp:TemplateField HeaderText="First Name">                     <ItemTemplate>                         <asp:Label ID="lblfirstName" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"FirstName") %>'></asp:Label>                     </ItemTemplate>                 </asp:TemplateField>                 <asp:TemplateField HeaderText="Last Name">                     <ItemTemplate>                         <asp:Label ID="lblLastName" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"LastName") %>'></asp:Label>                     </ItemTemplate>                 </asp:TemplateField>                 <asp:TemplateField HeaderText="Email">                     <ItemTemplate>                         <asp:Label ID="lblEmail" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"Email") %>'></asp:Label>                     </ItemTemplate>                 </asp:TemplateField>                 <asp:TemplateField HeaderText="Check all">                     <HeaderTemplate>                         <asp:CheckBox ID="CheckBox2" AutoPostBack="true" runat="server"  OnCheckedChanged="CheckBox2_CheckedChanged1" />                     </HeaderTemplate>                     <ItemTemplate>                         <asp:CheckBox ID="CheckBox1"  runat="server" />                     </ItemTemplate>                 </asp:TemplateField>             </Columns>         </asp:GridView>

We have added the CheckBox into Gridview Header template with autopostback enabled and onChecked event of it
we are checking all the checkboxs in gridview

C#.net code behind

protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { GridView1.DataSource = GridDataProvider.GetData(); GridView1.DataBind(); } }     protected void CheckBox2_CheckedChanged1(object sender, EventArgs e) { foreach (GridViewRow r in GridView1.Rows) { ((CheckBox)r.FindControl("CheckBox1")).Checked = true; } }

Vb.Net code 

Protected Sub CheckBox2_CheckedChanged1(ByVal sender As Object, ByVal e As EventArgs)     For Each r As GridViewRow In GridView1.Rows         DirectCast(r.FindControl("CheckBox1"), CheckBox).Checked = True             Next End Sub Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)     If Not Page.IsPostBack Then         GridView1.DataSource = GridDataProvider.GetData()         GridView1.DataBind()     End If End Sub

The GridView Data provider class will provide data to Grid

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data; /// <summary> /// Summary description for GridDataProvider /// </summary> public class GridDataProvider {  public GridDataProvider()  {     }     public static DataTable GetData()     {                 DataTable dt = new DataTable();         dt.Columns.Add( new DataColumn("ID",typeof(int)));         dt.Columns.Add(new DataColumn("FirstName",typeof(string)));         dt.Columns.Add(new DataColumn("LastName",typeof(string)));         dt.Columns.Add(new DataColumn("Email",typeof(string)));         DataRow dr = dt.NewRow();         dr[0] = 1;         dr[1] = "Mike";         dr[2] = "Johnson";         dr[3] = "mike@j.com";         dt.Rows.Add(dr);                 dr = dt.NewRow();         dr[0] = 2;         dr[1] = "Rita";         dr[2] = "Mjay";         dr[3] = "rit@rit.com";         dt.Rows.Add(dr);         dr = dt.NewRow();         dr[0] = 3;         dr[1] = "Simran";         dr[2] = "Off";         dr[3] = "a@rev.com";         dt.Rows.Add(dr);         dr = dt.NewRow();         dr[0] = 4;         dr[1] = "Satalaj";         dr[2] = "More";         dr[3] = "satalaj@rev.com";         dt.Rows.Add(dr);                 dr = dt.NewRow();         dr[0] = 5;         dr[1] = "Dinesh";         dr[2] = "Zirpe";         dr[3] = "satalaj@rev.com";         dt.Rows.Add(dr);         dr = dt.NewRow();         dr[0] = 6;         dr[1] = "Ajit";         dr[2] = "Ekke";         dr[3] = "Ajit@rev.com";         dt.Rows.Add(dr);         dr = dt.NewRow();         dr[0] = 7;         dr[1] = "Vivk";         dr[2] = "Patil";         dr[3] = "Patil@rev.com";         dt.Rows.Add(dr);         dr = dt.NewRow();         dr[0] = 8;         dr[1] = "Dhobale";         dr[2] = "Dan";         dr[3] = "satalaj@rev.com";         dt.Rows.Add(dr);         dr = dt.NewRow();         dr[0] = 9;         dr[1] = "Don";         dr[2] = "Petus";         dr[3] = "satalaj@rev.com";         dt.Rows.Add(dr);         dr = dt.NewRow();         dr[0] = 10;         dr[1] = "Shane";         dr[2] = "Glov";         dr[3] = "shane@rev.com";         dt.Rows.Add(dr);         dr = dt.NewRow();         dr[0] = 11;         dr[1] = "Shane";         dr[2] = "Patson";         dr[3] = "satalaj@rev.com";         dt.Rows.Add(dr);         dr = dt.NewRow();         dr[0] = 12;         dr[1] = "Dbriain";         dr[2] = "Briane";         dr[3] = "satalaj@rev.com";         dt.Rows.Add(dr);         dr = dt.NewRow();         dr[0] = 13;         dr[1] = "Mark";         dr[2] = "Turner";         dr[3] = "Mark@rev.com";         dt.Rows.Add(dr);         dr = dt.NewRow();         dr[0] = 14;         dr[1] = "Data";         dr[2] = "More";         dr[3] = "satalaj@rev.com";         dt.Rows.Add(dr);         return dt;     } }