C#: How to avoid WIA-error when scanning documents with 2400dpi or more?
- by Stephan_W
Hello,
when we scan a document with a resolution of 2400dpi or higher, we recieve (for example) the following error-message:
COMException: Ausnahme von HRESULT: 0x80010100 (RPC_E_SYS_CALL_FAILED)
or
COMException: Ausnahme von HRESULT: 0x8021006F
in one of the following lines
img = itm.Transfer(scanFormat.ScanFormat) as WIA.ImageFile;
img = ip.Apply(img as WIA.ImageFile);
some screenshots for the mentioned errors:
http://www.amarant-it.de/TempDownload/WIA_Error01.png
or the same path with WIA_Error02.png and WIA_Error03.png
for scanning we use the following code:
#region Image-Convert-Settings
//IP.Filters.Add IP.FilterInfos("Convert").FilterID
//IP.Filters(1).Properties("FormatID").Value = wiaFormatJPEG
WIA.IImageProcess ip = new WIA.ImageProcessClass();
object convert = "Convert";
WIA.IFilterInfo fi = ip.FilterInfos.get_Item(ref convert);
ip.Filters.Add(fi.FilterID, 0);
convert = "FormatID";
object formatstring = scanFormat.ScanFormat;
WIA.IFilter filter;
foreach (WIA.IFilter fTemp in ip.Filters)
{
filter = fTemp;
WIA.IProperty prop = filter.Properties.get_Item(ref convert);
prop.set_Value(ref formatstring);
}
#endregion
#region Image-Scan + Convert
img = itm.Transfer(scanFormat.ScanFormat) as WIA.ImageFile;
img = ip.Apply(img as WIA.ImageFile);
img.SaveFile("D:\\scan2." + img.FileExtension);
Image image = Image.FromFile("D:\\scan2." + img.FileExtension);
ilImages.Images.Add(image.ToString(), image);
alImages.Add(image);
if (ImageScanned != null)
{
ImageScanned(image);
}
#endregion
can anyone help us with this problem?
thanks
