Wednesday 14 May 2014

How to show the gridview header when datatable is empty

Output:


Aspx Page 

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm2.aspx.cs" Inherits="VP_Industries.WebForm2" %>

<!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></title>

    <style type="text/css">
       
.Gridview
{
        font-family:Verdana;
        font-size:10pt;
        font-weight:normal;
        color:black;
        width:300px;
}

</style>

</head>
<body>
    <form id="form1" runat="server">
    <div>
   

 <asp:GridView ID="gvdata" runat="server" CssClass="Gridview" ShowHeaderWhenEmpty="true"AutoGenerateColumns="false" HeaderStyle-BackColor="#7779AF" HeaderStyle-ForeColor="White">
<Columns>
<asp:BoundField DataField="username" HeaderText="username"/>
<asp:BoundField DataField ="password" HeaderText="password" />

</Columns>
</asp:GridView>


    </div>
    </form>
</body>
</html>

Aspx.cs Page 


using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
namespace VP_Industries
{
    public partial class WebForm2 : System.Web.UI.Page
    {
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["con"].ConnectionString);
        SqlCommand cmd;
        SqlDataAdapter da;
        DataTable dt;
        protected void Page_Load(object sender, EventArgs e)
        {
            if(!IsPostBack)
            {
                BindGridviewData();
            }
        }
        protected void BindGridviewData()
        {
            da = new SqlDataAdapter("select * from login where id=1",con);
            dt = new DataTable();
            da.Fill(dt);
            if (dt.Rows.Count > 0)
            {
                gvdata.DataSource = dt;
                gvdata.DataBind();
            }
            else
            {
                gvdata.DataSource = "";
                gvdata.DataBind();
            }
        }
    }
}

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