Create your own separator controls (LineH, LineV)

In the past, when developing software using Delphi, if you need to place a separation line on the interface, the built-in TBevel can meet this requirement well. Now I switched to the. NET platform and couldn't find the corresponding control (after all, it is too troublesome to draw in the painting event every time ). However, if Panel, GroupBox, and Label are used for indirect implementation, the effect is not ideal and it feels strange. Therefore, we decided to implement a separator control, as shown in the following figure:

Here I only paste the core code. For more information about creating custom controls, see MSDN:
Ms-help: // MS. VSCC.2003/MS. MSDNQTR.2003FEB. 2052/vbcon/html/vbconControlCreation.htm
/// <Summary>
/// Horizontal separator
/// </Summary>
[
ToolboxBitmap (typeof (LineH), "res. LineH. ico "),
Designer (typeof (LineHDesigner ))
]
Public class LineH: System. Windows. Forms. UserControl
{
//......

Private void LineH_Paint (object sender, System. Windows. Forms. PaintEventArgs e)
{
Graphics g = e. Graphics;
Rectangle r = this. ClientRectangle;

Pen darkPen = new Pen (SystemColors. ControlDark, 1 );
Pen LightPen = new Pen (Color. White );

// Use a dark color to process the upper edge
G. DrawLine (darkPen, r. Left, r. Top, r. Right, r. Top );

// Use bright colors to process the lower edge
G. DrawLine (LightPen, r. Left, r. Top + 1, r. Right, r. Top + 1 );
}

//......
}
/// <Summary>
/// Vertical separator
/// </Summary>
[
ToolboxBitmap (typeof (LineV), "res. LineV. ico "),
Designer (typeof (LineVDesigner ))
]
Public class LineV: System. Windows. Forms. UserControl
{
//......

Private void LineV_Paint (object sender, System. Windows. Forms. PaintEventArgs e)