Hi all,

I started working with delegates last week and i am trying to update my gridview async on the background. All goes well, no errors or such but i dont get a result after my EndInvoke. does anyone know what i am doing wrong?

Here is a code snippet:

    public delegate string WebServiceDelegate(DataKey key);

    protected void btnCheckAll_Click(object sender, EventArgs e)
    {
        foreach (DataKey key in gvTest.DataKeys)
        {
            WebServiceDelegate wsDelegate = new WebServiceDelegate(GetWebserviceStatus);
            wsDelegate.BeginInvoke(key, new AsyncCallback(UpdateWebserviceStatus), wsDelegate);
        }
    }

    public string GetWebserviceStatus(DataKey key)
    {
        return String.Format("Updated {0}", key.Value);
    }

    public void UpdateWebserviceStatus(IAsyncResult result)
    {
        WebServiceDelegate wsDelegate = (WebServiceDelegate)result.AsyncState;

        Label lblUpdate = (Label)gvTest.Rows[Convert.ToInt32(key.Value)].FindControl("lblUpdate");
        lblUpdate.Text = wsDelegate.EndInvoke(result);
    }