Hi Gates72,
Here is a simple Windows-Forms example. Please copy and paste.
HTH, günther
begin....
using System;
using System.ComponentModel;
using System.Drawing;
using System.Collections;
using System.Windows.Forms;
using System.Data;
namespace WindowsApplication1
{
#region form1
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Label label1;
private System.ComponentModel.Container components =
null;
public event CancelEventHandler UseLessEventHandler;
public Form1()
{
InitializeComponent();
this.UseLessEventHandler += new
CancelEventHandler(Form1_UseLessEventHandler);
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not
modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.button1 = new
System.Windows.Forms.Button();
this.label1 = new
System.Windows.Forms.Label();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new
System.Drawing.Point(108, 74);
this.button1.Name = "button1";
this.button1.TabIndex = 0;
this.button1.Text = "button1";
this.button1.Click += new
System.EventHandler(this.button1_Click);
//
// label1
//
this.label1.Location = new
System.Drawing.Point(102, 110);
this.label1.Name = "label1";
this.label1.TabIndex = 1;
this.label1.Text = "label1";
this.label1.TextAlign =
System.Drawing.ContentAlignment.MiddleCenter;
//
// Form1
//
this.AutoScaleBaseSize = new
System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(328,
197);
this.Controls.Add(this.label1);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
#endregion
#region MyCancelEventArgs
public class MyCancelEventArgs : CancelEventArgs
{
private object tag = null;
public MyCancelEventArgs()
{
}
public object Tag
{
get
{
return this.tag;
}
set
{
this.tag = value;
}
}
}
#endregion
private void Form1_UseLessEventHandler(object sender,
CancelEventArgs e)
{
if( MessageBox.Show( this, "Do you want to
cancel this?", "?", MessageBoxButtons.YesNo ) == DialogResult.Yes )
{
e.Cancel = true;
}
}
private void button1_Click(object sender,
System.EventArgs e)
{
MyCancelEventArgs ce = null;
if( this.UseLessEventHandler != null )
{
ce = new MyCancelEventArgs();
ce.Tag = this; // or whatever;
this.UseLessEventHandler( this, ce );
if( ce.Cancel )
{
this.label1.Text = "You
cancelled!";
}
else
{
this.label1.Text =
"braveheart";
}
}
else
{
this.label1.Text = "You just Clicked -
nothing more!";
}
}
#endregion
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
}
}
end ....
On Fri, 25 Feb 2005 17:34:57 +0100, "cody" <de********@gmx.de> wrote:
public class MyCancelEventsArgs : CancelEventsArgs
{
}
And now?
"Gates72" <an*******@discussions.microsoft.com> schrieb im Newsbeitrag
news:19****************************@phx.gbl... Hello All,
I am looking for an example showing a custom EventArgs
class that derives from CancelEventsArgs, and a form or
control using that class in a custom event.
The simpler, the better, but I'll take anything...
Thanks,
G72
