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8.2

A generic error occurred in GDI+

Asked by melinalt in .NET, Programming for ASP.NET

Tags: asp .net

I am writing an ASP .NET applicaiton which creates thumbnails on the fly (code below).
It works ok with any type of file except bmp.

This is the line in which I get the error:
bmp.Save(Response.OutputStream, ImageFormat.Bmp)

An the complete error is:
"A generic error occurred in GDI+."

Again, this only happends with bmp files (not with jpg or any other format).

Any ideas?

Get your answer NOW

         
           
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             Dim intImage As String = Request.QueryString("ID")
 
 
Dim src As String = getobjects.getRecord("select fileThumbnail as id from marketing.dbo.iDAD_systemFileSearch where sysID='" & intImage & "'")
Dim strFormat As String = getobjects.getRecord("select fileThumbContentType as id from marketing.dbo.iDAD_systemFileSearch where sysID='" & intImage & "'")
 
 
Dim thumbWidth As Integer = 100
Dim fs As IO.FileStream = IO.File.OpenRead(src)
Dim image As System.Drawing.Image = System.Drawing.Image.FromStream(fs)
Dim srcWidth As Integer = image.Width
Dim srcHeight As Integer = image.Height
Dim sizeRatio As Decimal = (CType(srcHeight, Decimal) / srcWidth)
Dim thumbHeight As Integer = Decimal.ToInt32((sizeRatio * thumbWidth))
Dim bmp As Bitmap = New Bitmap(thumbWidth, thumbHeight)
Dim gr As System.Drawing.Graphics = System.Drawing.Graphics.FromImage(bmp)
gr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality
gr.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality
gr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High
Dim rectDestination As System.Drawing.Rectangle = New System.Drawing.Rectangle(0, 0, thumbWidth, thumbHeight)
gr.DrawImage(image, rectDestination, 0, 0, srcWidth, srcHeight, GraphicsUnit.Pixel)
 
fs.Dispose()
image.Dispose()
 
'Set the ContentType to "image/gif" and output the image's data
Response.ContentType = strFormat
 
If UCase(strFormat) = "BMP" Then
   bmp.Save(Response.OutputStream, ImageFormat.Bmp)
ElseIf UCase(strFormat) = "JPG" Or UCase(strFormat) = "JPEG" Or UCase(strFormat) = "PJPEG" Or UCase(strFormat) = "CDR" Then
   bmp.Save(Response.OutputStream, ImageFormat.Jpeg)
ElseIf UCase(strFormat) = "PNG" Then
   bmp.Save(Response.OutputStream, ImageFormat.Png)
ElseIf UCase(strFormat) = "TIFF" Then
   bmp.Save(Response.OutputStream, ImageFormat.Tiff)
Else
    bmp.Save(Response.OutputStream, ImageFormat.Gif)
End If
 
bmp.Dispose()
gr.Dispose()
GC.Collect()
GC.WaitForPendingFinalizers()

           
         

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A generic error occurred in GDI+

Asked by melinalt in .NET, Programming for ASP.NET

Tags: asp .net

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