C# 工具条控件设置背景色去除边框

1、设置控件toolStrip1属性RenderMode为System

2、重绘代码

private void toolStrip1_Paint(object sender, PaintEventArgs e)
{
	if ((sender as ToolStrip).RenderMode == ToolStripRenderMode.System)
	{
		Rectangle rect = new Rectangle(0, 0, this.toolStrip1.Width, this.toolStrip1.Height - 2);
		e.Graphics.SetClip(rect);
	}   
}