Three buttons and one gridview

Because I need to check other conditions...age brackets:

and

(Datediff(DAY, filedate,Getdate())>301 ) AND(Datediff(DAY, filedate,Getdate())<350)

and

>351 < 400

and

> 400

How do I add that to the stored procedure so when the button changes it picks up those and place it into the gridview?

The gridview loads with over 250 pending.

The value of 300 button will show >301 < 350

350 button will show >351 <400 400 button will show > 400

Above I donot see the value of Radiobuttons?

Here's the radiobuttonlist and Gridview code:
     <asp:RadioButtonList ID="Pending" runat="server" AutoPostBack="True" OnSelectedIndexChanged="Populategrid">
                     <asp:ListItem Value="F03">Over 300</asp:ListItem>
                     <asp:ListItem Value="350">Over 350</asp:ListItem>
                     <asp:ListItem Value="400">Over 400</asp:ListItem>
                 </asp:RadioButtonList>        <br />
        DDS Pending Cases over 250 Days 
                 based on File Date<br />
        </strong></span>          <%--
        <span class="style4"><span class="style1"><strong>Total Pending:</strong></span> </span>
      <asp:Label runat="server" id="CountLabel" Font-Bold="True" class="style2" CssClass="style1" />
--%> <br /> 
         <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
        DataSourceID="SqlDataSource7" EnableModelValidation="True" Width="331px" 
        CaptionAlign="Top" Height="126px" BackColor="White" BorderColor="#DCBE68" 
             BorderStyle="Solid" BorderWidth="1px" CellPadding="4" 
              HorizontalAlign="Center" CellSpacing="2" Font-Names="Arial" 
     AllowSorting="True">                           <Columns>
                               <asp:BoundField DataField="Doc" HeaderText="DDS" SortExpression="Doc" />
                               <asp:TemplateField HeaderText="Total Pending" SortExpression="cnt">
                                    <ItemTemplate>
                           <asp:HyperLink ID="HyperLink1" runat="server" 
                            NavigateUrl='<%# "PendingDDS.aspx?doc=" & Eval("doc") %>' 
                            Text='<%# Eval("cnt") %>'></asp:HyperLink>
                        </ItemTemplate>                                 
                                   <HeaderStyle Wrap="False" />
                               </asp:TemplateField>
                           </Columns>
                          <FooterStyle BackColor="#FFFFCC" ForeColor="#330099" />
        <HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="#FFFFCC" 
            VerticalAlign="Top" Font-Size="Medium" />
        <PagerStyle BackColor="#FFFFCC" ForeColor="#330099" HorizontalAlign="Center" />
        <RowStyle BackColor="White" BorderStyle="Double" ForeColor="#330099" 
                  HorizontalAlign="Center" />
        <SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="#663399" />
    </asp:GridView>

Here's the code behind:

  Protected Sub PopulateGrid(ByVal sender As Object, ByVal e As EventArgs)
        'Select Case Pending.SelectedItem.Value        '   Case "300"
        Dim conn As New Data.SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings("PendingClaimsConnectionString").ConnectionString)
        Dim cmd As New Data.SqlClient.SqlCommand
        Dim cmdPending As New Data.SqlClient.SqlCommand        With cmdPending
            .CommandType = Data.CommandType.StoredProcedure
            .CommandText = "GetDDS250"            .Connection = conn
            '.Parameters.AddWithValue("@doc", Request.QueryString("doc"))
            .Parameters.AddWithValue("@doc", Pending.SelectedValue)
            '            .Parameters.        End With
        Dim adapter As New Data.SqlClient.SqlDataAdapter(cmdPending)        Try
            conn.Open()            Dim ds As New Data.DataSet
            adapter.Fill(ds)            'GridView1.DataSource = ds
            GridView1.DataBind()        Finally            conn.Dispose()
        End Try

You said you want to load GridView based on RadioButtonList selection. So I am unable to get what is the difficulty when you are passing the RadioButtonList.SelectedItem.Value to the Stored Proc

I think it's my stored procedure as you suggest earlier.  I need to modify it to come up with what I want.  Ugh...