Question

Maybe I’m having a brain fart or something because it seems like this should be pretty simple but how do you update a User Control from another User Control via Ajax?

I have an ASPX page with two user controls and when I trigger a server-side event on one, I want to refresh a grid on the other so it’ll update it’s data.

I’m using Telerik controls if that helps. Checkbox event on the first User Control causes the RadGrid in the second User Control to Rebind() and I have RadAjaxManager in the ASPX page and RadAjaxManagerProxy in the two User Controls.

Answer 1

First for me Page.DataBind() doesn’t work for me.

I declared in UserControl

// Declare a delegate
public delegate void save_CommandEventHandler ();

//Event
save_CommandEventHandler SaveViewChanged public event;

// I run SaveViewChanged() from a click_button but it can run from anywhere
protected void save_Click (object sender, EventArgs e)
{
    UpdateDataInDatabase();

    SaveViewChanged ();
}

In page.aspx.cs code

protected override void OnInit (EventArgs e)
{
    base.OnInit (e);

    // UserControle1 is the Id of your UserControl declared in Aspx Page
    UserControle1.SaveViewChanged + =
       New UserControle.save_CommandEventHandler
       (Save_CommandEventHandler);
}

private void save_CommandEventHandler () {
    // Reload the gridView gvExpence to see the change operated in the user control
    gvExpence.DataSource =DataAcces.getAllCompanyExpence ();
    gvExpence.DataBind ();

    // update user control 2
    usercontrol2.updateView();
}