How to show template field and header text both in ASP.NET gridview

Question

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I have to show template field where I can use sort expression and I have to use header template where I have to show textbox
My problem is that both are not showing together.When I place header template template field header text disappeared.i don't know why it is happening.

What I have tried:

ASP.NET

 <asp:GridView ID="GridViewemp" runat="server" AllowPaging="True" class="gv"
            AllowSorting="True" onpageindexchanging="GridViewemp_PageIndexChanging" 
            BorderColor="#3399FF" BorderStyle="Groove" 
            CellPadding="1" CellSpacing="1"
            onsorting="GridViewemp_Sorting" PageSize="5" AutoGenerateColumns="False" 
            Height="10px" onselectedindexchanged="GridViewemp_SelectedIndexChanged">
            <Columns>
             <asp:TemplateField HeaderText="E_Id ●" ControlStyle-Font-Names="Arial" SortExpression="eid" >
            <ItemTemplate>
           <asp:Label ID="lblid" runat="server" Text='<%#Eval("eid")%>'/>
           </ItemTemplate>
<ControlStyle Font-Names="Arial"></ControlStyle>
          </asp:TemplateField>
          <asp:TemplateField HeaderText="E_Name ●" SortExpression="ename" ShowHeader="true" >
            <HeaderTemplate>
            <table>
          <tr><td></td></tr>
          <tr><td> <cc1:ComboBox ID="ComboBoxname" runat="server" AutoCompleteMode="SuggestAppend" DropDownStyle="Simple" Width="50px">
              </cc1:ComboBox></td>
          </tr>
          </table>
            </HeaderTemplate>

            <ItemTemplate>
           <asp:Label ID="lblname" runat="server" Text='<%#Eval("ename")%>' />
           </ItemTemplate>
          </asp:TemplateField>
          <                                                <asp:TemplateField HeaderText="E_Group ●" SortExpression="egrp">
           <ItemTemplate>
           <asp:Label ID="lblgrp" runat="server" Text='<%#Eval("egrp")%>'/>
           </ItemTemplate>
          </asp:TemplateField>
          				
</Columns>
            <HeaderStyle Font-Names="Times New Roman" Font-Size="Small" 
                ForeColor="Black" CssClass="header" Wrap="False" />
        </asp:GridView>

Posted 14-Nov-16 19:00pm

Pragya Nagwanshi

Updated 14-Nov-16 19:09pm

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Suvendu Shekhar Giri · Accepted Answer · 2016-11-14T19:08:00

First you need to understand what a HeaderTemplate is. Check below link-

Quote:
Use the HeaderTemplate property to specify the custom content displayed for the header section of a TemplateField object. Define the content by creating a template that specifies how the header section is rendered.

TemplateField.HeaderTemplate Property (System.Web.UI.WebControls)[^]

You have also defined HeaderText in the template field-

HTML

HeaderText="E_Name ●"

It's not possible to show the content of HeaderTemplate and HeaderText at the same time.

So, what you can do is, change the HeaderTemplate accordingly to accomodate the HeaderText. Something like-

HTML

<headertemplate>
<table>
      <tr><td>E_Name ●</td></tr>

Hope, it helps :)