Grid Header Check box with check all function

In ASP.Net web pages, Grid View Delete row functionality is a very common feature of modern websites, here is the script for the confirmation to delete record without post back using “Page.ClientScript.RegisterStartupScript” feature.

• Bind grid on page load with Check() function.
• Call Check() function whenever you binding data to grid.
• Where “grdName” name of grid and “chkSelect” name of row check box

protected void Check()
{

string checkid = “”;
checkid += “function val(id){“;
checkid += “var flg=0;”;

foreach (GridViewRow grv in grdName.Rows)

{

CheckBox chk1;

chk1 = (CheckBox)grv.FindControl(“chkSelect”);

checkid += “if(document.getElementById(‘” + chk1.ClientID + “‘).checked==true){“;

checkid += “flg=1;}”;

}

checkid += “if(flg!=1){“;

checkid += “alert(‘Select Atleast One Row(s)’);return false;}”;

checkid += “if(flg==1 && id==1){“;

checkid += “if(!confirm(‘Do You Want To Delete Selected Rows(s) ?’)){return false;}}”;

checkid = checkid + “}”;

Page.ClientScript.RegisterClientScriptBlock(GetType(), “myscript2″, checkid, true);

btnDelete.Attributes.Add(“onclick”, “return val(1);”);

}

<asp:GridView ID=”grdName” runat=”server” AutoGenerateColumns=”False”>

<Columns>

<asp:TemplateField>

<HeaderTemplate>

<asp:CheckBox ID=”chkall” runat=”server” />

<HeaderTemplate>

<ItemTemplate>

<asp:CheckBox ID=”chkSelect” runat=”server” />

<ItemTemplate>

<asp:TemplateField>

<Columns>

<asp:GridView>

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