Regenerating the Designer.cs File (重新產生 designer.cs)

1. Delete the current designer.cs file
   (刪除 .designer.cs 檔)
2. Right click on the .aspx file and choose Convert to Web Application
   (在欲重新產生的程式上按滑鼠右鍵，點選 "轉換成網站應用程式)

EventHandler (加掛 Class 的 event 處理函數)

加掛 Class 的 event 處理函數

public CustomColorCheckBox()

{

this.checkColor = this.ForeColor;

this.Paint += new PaintEventHandler(this.PaintHandler);

this.Click += new EventHandler(this.OnClick1);

this.KeyUp += new KeyEventHandler(OnKeypress);

}

public void OnKeypress(object sender, KeyEventArgs e)

{
MessageBox.Show(e.KeyCode.ToString(), "Your input");
}

public void OnClick1(object sender, EventArgs e)

{

MessageBox.Show("Hello C#");

}

private void PaintHandler (object sender, PaintEventArgs pe)

{

if (this.Checked)

{

Point pt = new Point();

if (this.CheckAlign == ContentAlignment.BottomCenter)

{

pt.X = (this.Width / 2) - 4;

pt.Y = this.Height - 11;

}

if (this.CheckAlign == ContentAlignment.BottomLeft)

{

pt.X = 3;

pt.Y = this.Height - 11;

}

if (this.CheckAlign == ContentAlignment.BottomRight)

{

pt.X = this.Width - 11;

pt.Y = this.Height - 11;

}

if (this.CheckAlign == ContentAlignment.MiddleCenter)

{

pt.X = (this.Width / 2) - 4;;

pt.Y = (this.Height / 2) - 4;

}

if (this.CheckAlign == ContentAlignment.MiddleLeft)

{

pt.X = 3;

pt.Y = (this.Height / 2) - 4;

}

if (this.CheckAlign == ContentAlignment.MiddleRight)

{

pt.X = this.Width - 11;

pt.Y = (this.Height / 2) - 4;

}

if (this.CheckAlign == ContentAlignment.TopCenter)

{

pt.X = (this.Width / 2) - 4;

pt.Y = 3;

}

if (this.CheckAlign == ContentAlignment.TopLeft)

{

pt.X = 3;

pt.Y = 3;

}

if (this.CheckAlign == ContentAlignment.TopRight)

{

pt.X = this.Width - 11;

pt.Y = 3;

}

DrawCheck(pe.Graphics, this.checkColor,pt);

}

}