dynamically Binding GridView Rows using DropDownList headers as filter strings
<p>I've been trying to get this to work all day. I need to filter the gridview based on what is in the dropdownlists in the headers. I can do that in my code-behind, but how do i then bind the table that I created to the gridview? gridview.databind() does not work in this situation since the columns are not databound columns.</p>

<p>Here is my code:</p>

<pre><code>&lt;asp:GridView ID="GridView3" runat="server" CellPadding="3"
        ForeColor="#333333" GridLines="None"
        AllowSorting="True" SortedAscendingHeaderStyle-CssClass="sortasc-header" 
        SortedDescendingHeaderStyle-CssClass="sortdesc-header"
        AllowPaging="True" PageSize="17" PagerSettings-Mode="NextPreviousFirstLast" 
        ShowHeaderWhenEmpty="True" PagerStyle-Font-Names="WebDings" PagerStyle-Font-Size="Medium"
        PagerSettings-FirstPageText=" 7 " PagerSettings-PreviousPageText=" 3 " 
        PagerSettings-NextPageText=" 4 " PagerSettings-LastPageText=" 8 " 
          Font-Size="Small" onpageindexchanging="GridView3_PageIndexChanging" 
          onsorting="GridView3_Sorting" AutoGenerateColumns="False" 
          ondatabound="GridView3_DataBound"&gt;

        &lt;AlternatingRowStyle BackColor="White" ForeColor="#333333" /&gt;
         &lt;Columns&gt;
             &lt;asp:BoundField HeaderText="Date" DataField="Date" /&gt;

             &lt;asp:BoundField HeaderText="Time" DataField="Time"/&gt;

            &lt;asp:TemplateField HeaderText="Type"&gt;
                &lt;HeaderTemplate&gt;
                    &lt;asp:DropDownList ID="TypeList" runat="server" Height="21px" Width="134px" 
                    DataSourceId="dsWarningType" 
                    DataTextValue="Name" DataValueField="Name"&gt;
                    &lt;asp:ListItem Text="All" Selected="True"&gt;&lt;/asp:ListItem&gt; 
                    &lt;/asp:DropDownList&gt;
                 &lt;/HeaderTemplate&gt;
             &lt;/asp:TemplateField&gt;

                  &lt;asp:TemplateField HeaderText="Process" &gt;
             &lt;HeaderTemplate&gt;
                  &lt;asp:DropDownList ID="Process" runat="server" Height="21px" Width="134px" 
                   &gt;
                  &lt;/asp:DropDownList&gt;
             &lt;/HeaderTemplate&gt;
             &lt;/asp:TemplateField&gt;

                   &lt;asp:TemplateField HeaderText="Index" &gt;
             &lt;HeaderTemplate&gt;
                  &lt;asp:DropDownList ID="Index" runat="server" Height="21px" Width="134px" 
                   &gt;
                  &lt;/asp:DropDownList&gt;
             &lt;/HeaderTemplate&gt;
             &lt;/asp:TemplateField&gt;

             &lt;asp:BoundField HeaderText="Body" DataField="Body"/&gt;

         &lt;/Columns&gt;
        &lt;EditRowStyle BackColor="#999999" /&gt;
        &lt;FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /&gt;
        &lt;HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /&gt;

&lt;PagerSettings FirstPageText=" 7 " LastPageText=" 8 " Mode="NextPreviousFirstLast"      NextPageText=" 4 " PreviousPageText=" 3 "&gt;&lt;/PagerSettings&gt;

        &lt;PagerStyle BackColor="#5D7B9D" ForeColor="White" HorizontalAlign="Center" /&gt;
        &lt;RowStyle BackColor="#DCE2E8" ForeColor="#333333" /&gt;
        &lt;SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" /&gt;

&lt;SortedAscendingHeaderStyle CssClass="sortasc-header"&gt;&lt;/SortedAscendingHeaderStyle&gt;

&lt;SortedDescendingHeaderStyle CssClass="sortdesc-header"&gt;&lt;/SortedDescendingHeaderStyle&gt;
      &lt;/asp:GridView&gt;
</code></pre>

<p>When I create my table, it binds the Date, Time, and Body fields just fine, but leaves the Type,Process, and Index fields blank. </p>
