Adding Drop down inside gridview header - asp.net

Question

I am new to ASP.net and trying to add dropdownlist and search text boxes under my header fields in Gridview control.
<asp:GridView ID="EmpGridView" runat="server" AutoGenerateColumns="false"
DataKeyNames="EMPLOYEEID"
AllowSorting="True" AllowPaging="true" PageSize="50"
OnPageIndexChanging="EmpGridView_PageIndexChanging" style="margin-right: 52px" OnSelectedIndexChanged="EmpGridView_SelectedIndexChanged"
>
<Columns>
<asp:BoundField DataField="EMPLOYEEID"
HeaderText="Employee ID" ReadOnly="true"
SortExpression="EMPLOYEEID" />
<asp:BoundField DataField="PERSONNAME"
HeaderText="Person Name" ReadOnly="true"
SortExpression="PERSONNAME" />
<asp:BoundField DataField="DIVISIONNAME"
HeaderText="Division Name" ReadOnly="true"
SortExpression="DIVISIONNAME" />
<asp:BoundField DataField="DESIGNATION"
HeaderText="Designation" ReadOnly="true"
SortExpression="DESIGNATION"
/>
<asp:BoundField DataField="CNIC"
HeaderText="CNIC" ReadOnly="true"
SortExpression="CNIC" />
</Columns>
</asp:GridView>
I want following
EMPLOYEEID PERSONNAME DIVISIONNAME <----HeaderText
TextBox control TextBox Control DropDownlist control <------aspcontrols
..data ..data ..data <------ rest is db
..data ..data ..data
Meaning I want my labels there too with my asp.net controls
How should I do it?
So far I tried following but could not work out where to place it? since if I add it separately then there are rows of each control which I don't want and boundfield tag does not permit it in it.
<asp:TemplateField>
<ItemTemplate>
<asp:TextBox ID="searchBox" runat="server" />
</ItemTemplate>
</asp:TemplateField>

Answer 1

You need to use HeaderTemplate of the TemplateField for placing the controls on the header
<asp:TemplateField SortExpression="PERSONNAME">
<HeaderTemplate>
<asp:Literal runat="server">Person Name</asp:Literal>
<asp:TextBox runat="server" ID="searchBox"></asp:TextBox>
</HeaderTemplate>
<ItemTemplate>
<asp:Literal runat="server" Text='<%# Bind("PERSONNAME") %>'></asp:Literal>
</ItemTemplate>
</asp:TemplateField>