C#:按钮颜色设置

     private   void  button1_Click( object  sender, EventArgs e)
    {
        ColorDialog color  =   new  ColorDialog();
         if  (color.ShowDialog()  ==  DialogResult.OK)
        {
            Button button  =  (Button)sender;

             int  r, g, b;
            r  =  color.Color.R;
            g  =  color.Color.G;
            b  =  color.Color.B;

             //  RGB 色值
             string  rgbString  =  r.ToString( " X2 " )  +  g.ToString( " X2 " )  +  b.ToString( " X2 " );

             // 颜色字符串 Alpha + RGB
             string  colorString  =  color.Color.A.ToString( " X2 " )  +  rgbString;

             // 按钮显示文本
            button.Text  =   " # "   +  rgbString;

             // 按钮背景色
            button.BackColor  =  color.Color;

             // 按钮字体颜色（ARGB），为按钮背景色的反色
             string  foreColorString
             =   " FF "   +  ( 255   -  r).ToString( " X2 " )
             +  ( 255   -  g).ToString( " X2 " )
             +  ( 255   -  b).ToString( " X2 " );

             // 按钮字体颜色
            button.ForeColor  =
            System.Drawing.Color.FromArgb( int .Parse(
            foreColorString, System.Globalization.NumberStyles.HexNumber));
        }
    }

 

转载于:https://www.cnblogs.com/EasyData/archive/2010/04/19/1715621.html