Question

I have an ASP Grid View; its Datasource is a list of entities. The entity has 11 properties, but I want to show only some of the columns in the grid view.
My Grid View is

<asp:GridView runat="server" ID="GridForResult"
              Caption="Update The Result for the Folloing Students"
              Visible="true" ShowHeader="false">
  <Columns>
    <asp:TemplateField ItemStyle-Width="100px">
      <ItemTemplate>
        <%#Eval("TestRoll")%>
      </ItemTemplate>
    </asp:TemplateField>
    <asp:TemplateField ItemStyle-Width="120px">
      <ItemTemplate>
        <%#Eval("Name")%>
      </ItemTemplate>
    </asp:TemplateField>
    <asp:TemplateField ItemStyle-Width="80px">
      <ItemTemplate>
        <%#Eval("Program")%>
      </ItemTemplate>
    </asp:TemplateField>
  </Columns>
</asp:GridView>

In my code behind page, I have bound the grid like this:

List<FormGridEntity> gridEntities = new List<FormGridEntity>();
gridEntities = AdmissionResult_BAO.GetAllCandidateAdmissionInfo();
GridForResult.DataSource = gridEntities;
GridForResult.DataBind();
//What Will I need to do here or somewhere else

What should I do now?

Answer 1

@V4Vendetta has it right – in your GridView markup, set AutoGenerateColumns=”false”:

<asp:GridView runat="server" ID="GridForResult" AutoGenerateColumns="false" Caption="Update The Result for the Folloing Students" Visible="true" ShowHeader="false">

Alternatively, if you want to define columns in the markup and turn them off individually, you can set the Visible=”false” property:

<asp:TemplateField ItemStyle-Width="100px" Visible="false">

You don’t have to do anything in your code-behind, unless you want to turn columns on/off programatically:

GridForResult.Columns[0].Visible = false; // Turns off the first column