Bind Aggregate COUNT column to GridView in ASP.Net

I have table 'Sample' with field name. Now i want to show the names and count(name) into a grid. For this I used the following..

But it does'nt show the count value.

.aspx

 <asp:GridView ID="Grid_Count" runat="server"  
        Width="379px" AutoGenerateColumns="False" Height="188px" >
        <Columns>
            <asp:TemplateField HeaderText="Apperance">
                
                <ItemTemplate>
                    <asp:Label ID="Lbl" runat="server" Text='<%# Eval("name") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
             
            

            <asp:BoundField HeaderText="count" DataField="count" 
                    ReadOnly="True" SortExpression="count" />
            
 </Columns>
    </asp:GridView>


.aspx.cs

cmd = new SqlCommand("select name,count(name) from Sample g roup by name ", con);
    da.SelectCommand = cmd;
    da.Fill(ds, "temp");
    Grid_Count.DataSource =ds.Tables["temp"];
    Grid_Count.DataBind();