Validating GridView Selection

programming
1

I’m trying to write a simple script so that before the user has to select a row in the Gridview before being able to continue to the next Page. If they haven’t selected a row and they press the button, the page only shows an error messge. As far as I know, none of the Validation controls will work with this type of event. Here’s my code: (I left out namespaces for clarity)


public partial class Manage : System.Web.UI.Page
{
    public class Verify
    {
        private int verifyClick;
        public int VerifyClick
        {
            get
            { return verifyClick; }
            set
            { verifyClick = value; }
        }
    }
    Verify selectAction = new Verify();
 
    public void Page_Load(object sender, EventArgs e)
    {
 
    }    
    public void Button1_Click(object sender, EventArgs e)
    {
        if (selectAction.VerifyClick != 1)
        {
            Label1.Text = "You must Select a Lesson before choosing to Continue";
        }
        else
        {
            Response.Redirect("ManageContent.aspx?selectedLesson=" + GridView1.SelectedDataKey.Value.ToString());
        }
    }
    public void GridView1_SelectedIndexChanged(object sender, EventArgs e)
    {
        selectAction.VerifyClick=1;
    }
}