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POCropping a bitmap gives an empty bitmap
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  1. POCropping a bitmap gives an empty bitmap
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    copied!<p>I've taken a code from here (SO) that crops images. I tried it on bitmaps containing black text on white font. The result i get in return is a completely white output with no content.</p> <pre><code> // create new bitmap with desired size and same pixel format Bitmap croppedBitmap = new Bitmap(rect.Width, rect.Height, bitmap.PixelFormat); // create Graphics "wrapper" to draw into our new bitmap // "using" guarantees a call to gfx.Dispose() using (Graphics gfx = Graphics.FromImage(croppedBitmap)) { // draw the wanted part of the original bitmap into the new bitmap gfx.DrawImage(bitmap, 0, 0, rect, GraphicsUnit.Pixel); } return croppedBitmap; </code></pre> <p>Any guess?</p> <p><strong>PS</strong> if i crop in paint of course it does work</p> <p><strong>edit</strong></p> <p>If I crop a picture of me for example it works....</p> <p><strong>Appendix</strong></p> <p>Code:</p> <p><strong>Rectangles</strong>:</p> <pre><code> Rectangle 1: 8 50, 95, 80, 30 // invoice number Rectangle 2: 625, 778, 475, 22 // Total amount </code></pre> <p><strong>CropImage():</strong></p> <pre><code> public static Bitmap CropImage(Bitmap bitmap, Rectangle rect) { Bitmap croppedBitmap = new Bitmap(rect.Width, rect.Height, bitmap.PixelFormat); using (Graphics gfx = Graphics.FromImage(croppedBitmap)) { gfx.DrawImage(bitmap, 0, 0, rect, GraphicsUnit.Pixel); } return croppedBitmap; } </code></pre> <p>Image: (Sensitive data is hidden, I only left the part I'm trying to crop) <a href="http://img33.imageshack.us/img33/5703/modelx.png" rel="nofollow">http://img33.imageshack.us/img33/5703/modelx.png</a></p>
 

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