the connections that are used on page load are correct

but i didnt check the one at button ( this one returns data to sql server so i guess if an error occurs it will be after the databind() command)

notice that i get error from empty buttons too :

.aspx.cs :

protected void Button2_Click1(object sender, EventArgs e)
    {
    }

================================

.aspx :

<asp:Button ID="Button2" runat="server" onclick="Button2_Click1"
        Text="Button" AutoPostBack="True" />