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Determining the Dimensions of Uploaded Images in ASP.NET HttpPostedFile fil = this.FileUpload1.PostedFile;
int nFileLen = fil.ContentLength;
System.IO.Stream filStm = fil.InputStream;
byte[] theFile = new byte[nFileLen];
filStm.Read(theFile, 0, nFileLen);
//get the file name
string filename = FileUpload1.PostedFile.FileName;
FileInfo file = new FileInfo(filename);
//get the image width and height
System.Drawing.Image UploadedImage =
System.Drawing.Image.FromStream(fil.InputStream);
if (UploadedImage.Width > 300 || UploadedImage.Height > 400)
{
lblMessage.Text = "Uploaded image size is too high please resize";
return;
}
//get content type
string contentType = fil.ContentType;
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