Empty will be dispalyed if there is no data in grid

Question

<table border="0" cellpadding="0" cellspacing="0">
                <ajax:UpdatePanel ID="upd1" runat="server" ChildrenAsTriggers="false" UpdateMode="Conditional">
                    <ContentTemplate>
                        <asp:GridView ID="grdView" runat="server" AutoGenerateColumns="False" CellPadding="0"
                            ShowFooter="True" BorderWidth="1px" BorderColor="#D1D7E3" OnPageIndexChanging="grdView_PageIndexChanging"
                            OnRowCancelingEdit="grdView_RowCancelingEdit" OnRowEditing="grdView_RowEditing"
                            OnRowUpdating="grdView_RowUpdating" OnRowDeleting="grdView_RowDeleting">
                            <Columns>
                                <asp:TemplateField HeaderText="TrigID" Visible="False">
                                    <ItemTemplate>
                                        <asp:Label ID="lblTrigID" runat="server" Text='<%# Eval("TrigID") %>'></asp:Label>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="CustodianID" Visible="False">
                                    <ItemTemplate>
                                        <asp:Label ID="lblCustodianID" runat="server" Text='<%# Eval("CustodianID") %>'></asp:Label>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="TrgFileName">
                                    <ItemTemplate>
                                        <%# DataBinder.Eval(Container.DataItem, "TrgFileName")%>
                                    </ItemTemplate>
                                    <EditItemTemplate>
                                        <asp:TextBox ID="txtTrgFileName" runat="server" Height="11px" Width="110px" Font-Size="XX-Small"
                                            Text='<%# Eval("TrgFileName") %>'></asp:TextBox>
                                        <asp:RequiredFieldValidator ID="reqflName" runat="server" ControlToValidate="txtTrgFileName" ValidationGroup="Existing" ErrorMessage="*" ForeColor="Red"></asp:RequiredFieldValidator>   
                                    </EditItemTemplate>
                                    <FooterTemplate>
                                        <asp:TextBox ID="txtTrgFileName" runat="server" Height="11px" Width="110px"></asp:TextBox>
                                        <asp:RequiredFieldValidator ID="reqTrgFleNm" runat="server" ControlToValidate="txtTrgFileName" ValidationGroup="Footer" ErrorMessage="*" ForeColor="Red"></asp:RequiredFieldValidator>
                                    </FooterTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="TrgFilePath">
                                    <ItemTemplate>
                                        <%# DataBinder.Eval(Container.DataItem, "TrgFilePath")%>
                                    </ItemTemplate>
                                    <EditItemTemplate>
                                        <asp:TextBox ID="txtTrgFilePath" runat="server" Height="11px" Width="110px" Font-Size="XX-Small"
                                            Text='<%# Eval("TrgFilePath") %>'></asp:TextBox>
                                            <asp:RequiredFieldValidator ID="reqflPath" runat="server" ControlToValidate="txtTrgFilePath" ValidationGroup="Existing" ErrorMessage="*" ForeColor="Red"></asp:RequiredFieldValidator>
                                    </EditItemTemplate>
                                    <FooterTemplate>
                                        <asp:TextBox ID="txtTrgFilePath" runat="server" Height="11px" Width="110px"></asp:TextBox>
                                        <asp:RequiredFieldValidator ID="reqTrgFlePt" runat="server" ControlToValidate="txtTrgFilePath" ValidationGroup="Footer" ErrorMessage="*" ForeColor="Red"></asp:RequiredFieldValidator>
                                    </FooterTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="ChkExistence" ItemStyle-HorizontalAlign="Center">
                                    <EditItemTemplate>
                                        <asp:CheckBox ID="ChkExistence" runat="server" Checked='<%# bool.Parse(Eval("ChkExistence").ToString() == "True" ? "True": "False") %>' />
                                    </EditItemTemplate>
                                    <ItemTemplate>
                                        <asp:CheckBox ID="ChkExistence" runat="server" Checked='<%# bool.Parse(Eval("ChkExistence").ToString() == "True" ? "True": "False") %>'
                                            Enabled="False" />
                                    </ItemTemplate>
                                    <FooterTemplate>
                                        <asp:CheckBox ID="ChkExistence" runat="server" />
                                    </FooterTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="CreateTrgFile" ItemStyle-HorizontalAlign="Center">
                                    <EditItemTemplate>
                                        <asp:CheckBox ID="ChkCreateTrgFile" runat="server" Checked='<%# bool.Parse(Eval("CreateTrgFile").ToString() == "True" ? "True": "False") %>' />
                                    </EditItemTemplate>
                                    <ItemTemplate>
                                        <asp:CheckBox ID="ChkCreateTrgFile" runat="server" Checked='<%# bool.Parse(Eval("CreateTrgFile").ToString() == "True" ? "True": "False") %>'
                                            Enabled="False" />
                                    </ItemTemplate>
                                    <FooterTemplate>
                                        <asp:CheckBox ID="ChkCreateTrgFile" runat="server" />
                                    </FooterTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="RemoveFile" ItemStyle-HorizontalAlign="Center">
                                    <EditItemTemplate>
                                        <asp:CheckBox ID="ChkRemoveFile" runat="server" Checked='<%# bool.Parse(Eval("RemoveFile").ToString() == "True" ? "True": "False") %>' />
                                    </EditItemTemplate>
                                    <ItemTemplate>
                                        <asp:CheckBox ID="ChkRemoveFile" runat="server" Checked='<%# bool.Parse(Eval("RemoveFile").ToString() == "True" ? "True": "False") %>'
                                            Enabled="False" />
                                    </ItemTemplate>
                                    <FooterTemplate>
                                        <asp:CheckBox ID="ChkRemoveFile" runat="server" />
                                    </FooterTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="Action" HeaderStyle-Width="230px" ItemStyle-HorizontalAlign="Center">
                                    <ItemTemplate>
                                        <span style="margin: 0 0 0 45px;">
                                            <asp:ImageButton ID="imgEdit" runat="server" Height="20px" ToolTip="Edit" AlternateText="Edit"
                                                CommandName="Edit" ImageUrl="images/icon_edit.png" />&nbsp;&nbsp;&nbsp;
                                            <asp:ImageButton ID="imgDelete" runat="server" Height="20px" ToolTip="Delete" AlternateText="Delete"
                                                CommandName="Delete" ImageUrl="images/icon_delete.png" /></span>
                                    </ItemTemplate>
                                    <EditItemTemplate>
                                        <asp:ImageButton ID="imgUpdate" runat="server" Height="20px" ToolTip="Edit" AlternateText="Edit"
                                            CommandName="Update" ValidationGroup="Existing" ImageUrl="images/Update-Icon.jpg" />&nbsp;&nbsp;&nbsp;
                                        <asp:ImageButton ID="imgCancel" runat="server" Height="20px" ToolTip="Cancel" AlternateText="Cancel"
                                            CommandName="Cancel" ImageUrl="images/Cancel-Icon.jpg" /></span>
                                    </EditItemTemplate>
                                    <FooterTemplate>
                                        <asp:ImageButton ID="imgAdd" runat="server" Height="20px" ToolTip="Add" CommandArgument="Add"
                                            ImageUrl="images/icon_add.png" OnClick="imgAdd_Click" ValidationGroup="Footer" />
                                    </FooterTemplate>
                                    <HeaderStyle Width="230px"></HeaderStyle>
                                    <ItemStyle HorizontalAlign="Center"></ItemStyle>
                                </asp:TemplateField>
                            </Columns>
                            <HeaderStyle CssClass="mainHead" />
                            <EditRowStyle HorizontalAlign="Center" />
                            <AlternatingRowStyle CssClass="evenRow" />
                            <FooterStyle CssClass="inputField" HorizontalAlign="Center" Height="30px" />
                        </asp:GridView>
                    </ContentTemplate>
                </ajax:UpdatePanel>
            </table>
















using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

namespace NAMe
{
    public partial class Details : BasePage
    {
     
        protected void Page_Load(object sender, EventArgs e)
        {
            //Show Empty Data Grid With Header and Footer When DataTable or Dataset is NULL
            this.ShowEmptyGrid(grdView);

            if (!Page.IsPostBack)
            {
            
                }
            }

        }

        protected void poulategrid(string val)
        {

            DataTable dt =
            grdView.DataSource =
            grdView.DataBind();

            //Show Empty Data Grid With Header and Footer When DataTable or Dataset is NULL
            this.ShowEmptyGrid(grdView);

        }

 
        //Show Empty Data Grid With Header and Footer When DataTable or Dataset is NULL
        protected void ShowEmptyGrid(GridView grdView)
        {
            // Executes After Grid Load Method
            if (grdView.Rows.Count == 0 &&
                grdView.DataSource != null)
            {
                DataTable dt = null;


                //We have To clone the Sources
                if (grdView.DataSource is DataSet)
                {
                    dt = ((DataSet)grdView.DataSource).Tables[0].Clone();
                }
                else if (grdView.DataSource is DataTable)
                {
                    dt = ((DataTable)grdView.DataSource).Clone();
                }

                if (dt == null)
                {
                    return;
                }

                //Adding Empty Row
                dt.Rows.Add(dt.NewRow());
                grdView.DataSource = dt;
                grdView.DataBind();

                //Hiding The Row
                grdView.Rows[0].Visible = false;
                grdView.Rows[0].Controls.Clear();
            }
        }


  
    }
}