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    <p>Steps to achieve what you want:</p> <ol> <li>Figure out ratio of height to width</li> <li>Scale the larger dimension down to 150px and the smaller dimension down to ratio * 150px.</li> <li>Draw the result in the middle of a 150x150 bitmap.</li> </ol> <p>This code will do exactly that (c#):</p> <pre><code>using ( Image img = Image.FromStream( FU.PostedFile.InputStream ) ) { int sourceWidth = img.Width; int sourceHeight = img.Height; int desiredHeight = 150; int desiredWidth = 150; double heightToWidthRatio = sourceHeight / ( double )sourceWidth; //This draw method will always center the image horizonally or vertically, as appropriate using ( Bitmap thumbnailBitmap = new Bitmap( desiredWidth, desiredHeight ) ) { using ( Graphics thumbnailGraph = Graphics.FromImage( thumbnailBitmap ) ) { thumbnailGraph.CompositingQuality = CompositingQuality.HighQuality; thumbnailGraph.SmoothingMode = SmoothingMode.HighQuality; thumbnailGraph.InterpolationMode = InterpolationMode.HighQualityBicubic; float destWidth = ( heightToWidthRatio &gt; 1f ) ? ( float )( desiredWidth / heightToWidthRatio ) : desiredWidth; float destHeight = ( heightToWidthRatio &gt; 1f ) ? desiredHeight : ( float )( desiredHeight * heightToWidthRatio ); float destX = ( desiredWidth - destWidth ) / 2f; float destY = ( desiredHeight - destHeight ) / 2f; thumbnailGraph.DrawImage( img, new RectangleF( destX, destY, destWidth, destHeight ), new Rectangle( sourceWidth, sourceHeight, sourceWidth, sourceHeight ), GraphicsUnit.Pixel ); } } } </code></pre> <p>Continue to write out the file as you have been, previously. The important part is the four float values in the middle and the fact that it uses a RectangleF in the DrawImage function, to truly center, even on fractional values. If you do not want that behavior due to excessive antialiasing, just Math.Floor the values and continue to use Rectangle and ints.</p>
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    1. POimage resize and crop on upload asp,net
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    1. COlets say that the dimensions of the original picture is 400 x 600, the function above will crop it center and resize it to be exactly 150 x 150 or what?
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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