How to Change Pixel Color of an Image in C#.NET

Question

I am working with Images in Java, I have designed more over 100+ images(.png) format, They were all Trasparent and Black Color Drawing.

The problem is, Now I have be

Answer 1

One way to efficiently replace a color is to use a remap table. In the following example, an image is drawn inside a picture box. In the Paint event, the color Color.Black is changed to Color.Blue:

    private void pictureBox_Paint(object sender, PaintEventArgs e)
    {
        Graphics g = e.Graphics;
        using (Bitmap bmp = new Bitmap("myImage.png"))
        {

            // Set the image attribute's color mappings
            ColorMap[] colorMap = new ColorMap[1];
            colorMap[0] = new ColorMap();
            colorMap[0].OldColor = Color.Black;
            colorMap[0].NewColor = Color.Blue;
            ImageAttributes attr = new ImageAttributes();
            attr.SetRemapTable(colorMap);
            // Draw using the color map
            Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
            g.DrawImage(bmp, rect, 0, 0, rect.Width, rect.Height, GraphicsUnit.Pixel, attr);
        }
    }

More information: http://msdn.microsoft.com/en-us/library/4b4dc1kz%28v=vs.110%29.aspx