C# 图片处理：快速实现裁剪与缩放

/// <summary>
    /// 缩小裁剪图片
    /// </summary>
    /// <param name="int_Width">要缩小裁剪图片宽度</param>
    /// <param name="int_Height">要缩小裁剪图片长度</param>
    /// <param name="input_ImgUrl">要处理图片路径</param>
    /// <param name="out_ImgUrl">处理完毕图片路径</param>
    /// <param name="int_Standard_Width">原图片宽度</param>
    /// <param name="int_Standart_Height">原图片高度</param>
    public void ImgReduceCutOut(int int_Standard_Width,int int_Standard_Height, int int_Width, int int_Height, string input_ImgUrl, string out_ImgUrl)
    {

        int Reduce_Width = 0; // 缩小的宽度
        int Reduce_Height = 0; // 缩小的高度
        //int CutOut_Width = 0; // 裁剪的宽度
        //int CutOut_Height = 0; // 裁剪的高度
        int level = 100; //缩略图的质量 1-100的范围

//         ＝＝＝获得缩小，裁剪大小＝＝＝
        if (int_Standard_Height * int_Width / int_Standard_Width > int_Height)
        {
            Reduce_Width = int_Width;
            Reduce_Height = int_Standard_Height * int_Width / int_Standard_Width;
            //CutOut_Width = int_Width;
            //CutOut_Height = int_Height;
        }
        else if (int_Standard_Height * int_Width / int_Standard_Width < int_Height)
        {
            Reduce_Width = int_Standard_Width * int_Height / int_Standard_Height;
            Reduce_Height = int_Height;