Filter ASP.Net GridView on RadioButtonList selection using C# and VB.Net

Hello ,

The project work very well but am confusing when i SET RadioButtonList ALL !!!

When i update someone  i get update so when i change to other section list like second or third etc.... not saving , i checked SQL server nothing change

Even i change both Dropdown (yellow d1 / d2) not update and saving someone tell me what the wrong is 

HTML : First RadioButtonList

<asp:RadioButtonList ID="rblCountries" runat="server" AutoPostBack="true" OnSelectedIndexChanged="rblCountries_SelectedIndexChanged"
    RepeatDirection="Horizontal" RepeatLayout="Flow" BorderStyle="Solid"
     ValidationGroup="Select" EnableTheming="True"
    Width="100%" BorderColor="Black" BorderWidth="4px"
            Font-Names="Arial" Font-Size="X-Large" CssClass="auto-style90"
            Font-Bold="True"> 
    <asp:ListItem Value="">All</asp:ListItem>
    <asp:ListItem Selected="True">الادارة</asp:ListItem>
    <asp:ListItem Text="المالى" Value="المالى"></asp:ListItem>
    <asp:ListItem>السكرتارية</asp:ListItem>
    <asp:ListItem Text="الشئون الهندسية " Value="الشئون الهندسية"></asp:ListItem>    
</asp:RadioButtonList>
<asp:GridView ID="GridView1" runat="server" OnRowDataBound="OnRowDataBound" AlternatingRowStyle-BackColor="white" AutoGenerateColumns="False" CssClass="Grid" Font-Names="Arial" Font-Size="11pt" DataKeyNames="Id" ShowHeaderWhenEmpty="True" Style="font-size: medium" Width="100%" BackColor="White" BorderColor="#E7E7FF" BorderStyle="None" BorderWidth="1px" CellPadding="3" GridLines="Horizontal">
    <AlternatingRowStyle BackColor="#CCCCCC"></AlternatingRowStyle>
    <Columns>
        <asp:TemplateField>
            <HeaderTemplate>
                <asp:CheckBox ID="checkAll" runat="server" Checked="True" onclick="checkAll(this);" />
            </HeaderTemplate>
            <ItemTemplate>
                <asp:CheckBox ID="CheckBox1" runat="server" onclick="Check_Click(this)" Checked='<%# Eval("IsSelected2") %>' />
            </ItemTemplate>
            <ItemStyle HorizontalAlign="Center" Width="5px" />
        </asp:TemplateField>
        <asp:TemplateField HeaderText="المجموعة">
            <ItemTemplate>
                <asp:Label ID="lblCountry" runat="server" Text='<%# Eval("groups") %>' Visible="false" />
                <asp:DropDownList ID="ddlCountries" runat="server" BackColor="#FFFFCC" Font-Size="Large">
                    <asp:ListItem Text=""></asp:ListItem>
                    <asp:ListItem Text="الاشرافيين" Value="الاشرافيين"></asp:ListItem>
                    <asp:ListItem Text="المالى" Value="المالى"></asp:ListItem>
                    <asp:ListItem Text="السكرتارية" Value="السكرتارية"></asp:ListItem> 
                </asp:DropDownList>
                <br />
                 <asp:Label ID="lblCountry2" runat="server" Text='<%# Eval("groups2") %>' Visible="false" />
                <asp:DropDownList ID="ddlCountries2" runat="server" BackColor="#FFFFCC" Font-Size="Large">
                    <asp:ListItem Text=""></asp:ListItem>
                    <asp:ListItem Text="الاشرافيين" Value="الاشرافيين"></asp:ListItem>
                    <asp:ListItem Text="المالى" Value="المالى"></asp:ListItem>
                    <asp:ListItem Text="السكرتارية" Value="السكرتارية"></asp:ListItem>
                    <asp:ListItem Text="الشئون الهندسية أ" Value="الشئون الهندسية أ"></asp:ListItem>                             
                </asp:DropDownList>
                <br />
                <asp:Button Text="Update" ID="btnUpdate" runat="server" OnClick="Update" Font-Bold="True" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="ملاحظات">
            <ItemTemplate>
                <asp:Label ID="neworderdatatxt" Text='<%# Eval("neworderdata2") %>' runat="server" ForeColor="Red" Font-Size="Medium" />
                <br />
                <asp:Label ID="notemedicaltxt" Text='<%# Eval("notemedical") %>' runat="server" />
                <br />
                <asp:Label ID="LabelNamefile2" Text='<%# Eval("Namefile2") %>' runat="server" Visible="False" />
                <asp:LinkButton ID="lnkDownload2" runat="server" Text="المرفقات" OnClick="DownloadFile2"
                    CommandArgument='<%# Eval("Id") %>' Visible='<%# !string.IsNullOrEmpty(Eval("Namefile2").ToString()) ? true : false %>'></asp:LinkButton> 
            </ItemTemplate>
            <ItemStyle Width="100px" HorizontalAlign="Center"></ItemStyle>
        </asp:TemplateField> 
         <asp:BoundField DataField="blockrasme" >
            <ItemStyle BackColor="White" Font-Size="2pt" ForeColor="White" Width="2px" /> 
        </asp:BoundField> 
    </Columns>
</asp:GridView>

private void BindGridView()
{
    try
    {
        string country = rblCountries.SelectedItem.Value;
 
        string sql = "SELECT * FROM Table_infoname WHERE markazel3mal=@markazel3mal OR @markazel3mal = '' ORDER BY [OPkdamat], [OPnqlyat] DESC";
        string constr = ConfigurationManager.ConnectionStrings["kankonConnectionString"].ConnectionString;
        using (SqlConnection con = new SqlConnection(constr))
        {
            using (SqlCommand cmd = new SqlCommand(sql))
            {
                cmd.Parameters.AddWithValue("@markazel3mal", country);
 
                cmd.Connection = con;
                using (SqlDataAdapter sda = new SqlDataAdapter(cmd))
                {
                    using (DataTable dt = new DataTable())
                    {
                        sda.Fill(dt);
                        GridView1.DataSource = dt;
                        GridView1.DataBind();
                    }
                }
                BindLocation();
            }
        }
    }
    catch (Exception)
    {
    }
}