Posted By

vedgiee on 11/11/10

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aspnet

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Last Edited at 11/11/10 05:13am

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ASP.NET Image Upload and Resize

/ Published in: C#

Image Upload and Resize

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public void ResizeFromStream(string ImageSavePath, int MaxSideSize, Stream Buffer) 
{ 
int intNewWidth; 
int intNewHeight; 
Image imgInput = Image.FromStream(Buffer);

//Determine image format 
ImageFormat fmtImageFormat = imgInput.RawFormat;

//get image original width and height 
int intOldWidth = imgInput.Width; 
int intOldHeight = imgInput.Height;

//determine if landscape or portrait 
int intMaxSide;

if (intOldWidth >= intOldHeight) 
{ 
intMaxSide = intOldWidth; 
} 
else 
{ 
intMaxSide = intOldHeight; 
}

if (intMaxSide > MaxSideSize) 
{ 
//set new width and height	
double dblCoef = MaxSideSize / (double)intMaxSide; 
i ntNewWidth = Convert.ToInt32(dblCoef * intOldWidth); 
intNewHeight = Convert.ToInt32(dblCoef * intOldHeight); 
} 
else 
{ 
intNewWidth = intOldWidth; 
intNewHeight = intOldHeight; 
} 
//create new bitmap 
Bitmap bmpResized = new Bitmap(imgInput, intNewWidth, intNewHeight);

//save bitmap to disk 
bmpResized.Save(ImageSavePath, fmtImageFormat);

//release used resources 
imgInput.Dispose(); 
bmpResized.Dispose(); 
Buffer.Close(); 
}

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