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RDLC shows black background PNG image in PDF
moprsal
Member Posts: 4
Hello,
I have a table with BLOB field. In the BLOB field is store PNG image with transparent background, I use IMPORT function to import an image to the field. I would like to create a report which shows images from the table. Everything goes well, I have a report, I have defined datasource and so on. When I run report from Nav, Preview is showed and it contains images with transparent background. But when I pres "export to PDF", PDF shows black background in images instead of transparent.
In RDLC layout I use object "Image " with Source="Datasource".
Do you have any experiences with export to PDF?
I also tried export image and use it in the report as external source, but the report shows "missing" image (red cross). What doI have to specify regarding this?
I have a table with BLOB field. In the BLOB field is store PNG image with transparent background, I use IMPORT function to import an image to the field. I would like to create a report which shows images from the table. Everything goes well, I have a report, I have defined datasource and so on. When I run report from Nav, Preview is showed and it contains images with transparent background. But when I pres "export to PDF", PDF shows black background in images instead of transparent.
In RDLC layout I use object "Image " with Source="Datasource".
Do you have any experiences with export to PDF?
I also tried export image and use it in the report as external source, but the report shows "missing" image (red cross). What doI have to specify regarding this?
0
Comments
GIFs on the other hand just have a per-pixel color of "Transparent".
You could convert from PNG to GIF at run-time else use GIF for the reports?
Right now, I dont have any function or SDK to convert PNG to GIF. Do you know how to convert it? Or could you recommend me a SDK/DLL for conversion?
Name DataType Subtype Length myBitmap DotNet System.Drawing.Bitmap.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' myImageFormat DotNet System.Drawing.Imaging.ImageFormat.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' myColour DotNet System.Drawing.Color.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' // Assuming file from filesystem myBitmap := myBitmap.Bitmap('M:\y\Transparent.png'); myBitmap.MakeTransparent(myColour.Transparent); myBitmap.Save('M:\y\NewTransparent.gif', myImageFormat.Gif);