我想在一个Window窗体里安一个button按扭点button打开一个选择颜色的对话框....选中你想要的颜色后使窗体变成你所选的颜色.......谢谢各位高手帮忙!!!!!!

ColorDialog

楼上说的对就是使用ColorDialog
private void button1_Click(object sender, System.EventArgs e)
{
ColorDialog colorda = new ColorDialog();
colorda.AllowFullOpen= true;
colorda.ShowDialog();
System.Drawing.Color col = colorda.Color;
this.CreateGraphics ().Clear (col);
}