怎样将Color转换成Stream

[kisstome88]

我想将Color画到图片上，不知道怎样写
Color pColor = Color.FromArgb(((int)(((byte)(192)))), ((int)(((byte)(168)))), ((int)(((byte)(1)))));

//Image image = Image.FromStream( // .FromFile(@"F:\Picture\139南美洲地形.jpg");
//colorRamp1.Items.Add(image);

[边城的刀声]

Image image = Image.FromStream(File.Open(@"F:\Picture\139南美洲地形.jpg"));

[边城的刀声]

Image image = Image.FromStream(File.Open(@"F:\Picture\139南美洲地形.jpg"));
Graphics graphics = Graphics.FromImage(image);
Brush brush = new SolidBrush(Color.FromArgb(((int)(((byte)(192)))), ((int)(((byte)(168)))), ((int)(((byte)(1))))));
g.FillRectangle(brush,0,0,100,100);

[LorenLiu]

貌似你要在地图上做标记。试试下面的代码

// Constract the image object
            Image image = Image.FromFile(@"F:\Picture\139南美洲地形.jpg");

            // Draw a triangle on the specified location of the image
            using (Graphics g = Graphics.FromImage(image))
            {
                using (Pen p = new Pen(Color.FromArgb(192, 168, 1)))
                {
                    g.DrawPolygon(p, new Point[] { new Point(100, 100), new Point(97, 103), new Point(103, 103) });
                }
            }

            // Save the result
            image.Save(@"F:\Picture\139南美洲地形-Modified.jpg");

但是你用的Color颜色（192，168，1）太暗了。。看起来不明显，建议你用个显眼一点的颜色比如红色或黄色