DeletePageThumbnailImage Method (GdPicturePDF)
Deletes a page thumbnail image and its resource, if any is defined for the currently selected page of the loaded PDF document.
Return Value
A member of the GdPictureStatus enumeration. If the method has been successfully followed, then the return value is GdPictureStatus.OK.
We strongly recommend always checking this status first.
How to delete thumbnail images and their resources from each page of your document.
Dim gdpicturePDF As New GdPicturePDF()
If gdpicturePDF.LoadFromFile("test.pdf", False) = GdPictureStatus.OK Then
Dim count As Integer = gdpicturePDF.GetPageCount()
Dim status As GdPictureStatus = gdpicturePDF.GetStat()
If status = GdPictureStatus.OK Then
Dim message As String = ""
For i As Integer = 1 To count
status = gdpicturePDF.SelectPage(i)
If status = GdPictureStatus.OK Then
status = gdpicturePDF.DeletePageThumbnailImage()
If status = GdPictureStatus.OK Then
message = message + "The thumbnail for the page nr." + i.ToString() + " has been successfully deleted." + vbCrLf
Else
message = message + "The DeletePageThumbnailImage() method has failed for the page nr." + i.ToString() + " with the status: " + status.ToString() + vbCrLf
End If
Else
message = message + "The SelectPage() method has failed for the page nr." + i.ToString() + " with the status: " + status.ToString() + vbCrLf
End If
Next
If gdpicturePDF.SaveToFile("test_DeletePageThumbnailImage.pdf") = GdPictureStatus.OK Then
message = message + "The file has been saved."
Else
message = message + "The file can't be saved."
End If
MessageBox.Show(message, "Example: DeletePageThumbnailImage")
Else
MessageBox.Show("The GetPageCount() method has failed with the status: " + status.ToString(), "Example: DeletePageThumbnailImage")
End If
Else
MessageBox.Show("The file can't be loaded.", "Example: DeletePageThumbnailImage")
End If
gdpicturePDF.Dispose()
GdPicturePDF gdpicturePDF = new GdPicturePDF();
if (gdpicturePDF.LoadFromFile("test.pdf", false) == GdPictureStatus.OK)
{
int count = gdpicturePDF.GetPageCount();
GdPictureStatus status = gdpicturePDF.GetStat();
if (status == GdPictureStatus.OK)
{
string message = "";
for (int i = 1; i <= count; i++)
{
status = gdpicturePDF.SelectPage(i);
if (status == GdPictureStatus.OK)
{
status = gdpicturePDF.DeletePageThumbnailImage();
if (status == GdPictureStatus.OK)
message = message + "The thumbnail for the page nr." + i.ToString() + " has been successfully deleted.\n";
else
message = message + "The DeletePageThumbnailImage() method has failed for the page nr." + i.ToString() + " with the status: " + status.ToString() + "\n";
}
else
message = message + "The SelectPage() method has failed for the page nr." + i.ToString() + " with the status: " + status.ToString() + "\n";
}
if (gdpicturePDF.SaveToFile("test_DeletePageThumbnailImage.pdf") == GdPictureStatus.OK)
message = message + "The file has been saved.";
else
message = message + "The file can't be saved.";
MessageBox.Show(message, "Example: DeletePageThumbnailImage");
}
else
MessageBox.Show("The GetPageCount() method has failed with the status: " + status.ToString(), "Example: DeletePageThumbnailImage");
}
else
MessageBox.Show("The file can't be loaded.", "Example: DeletePageThumbnailImage");
gdpicturePDF.Dispose();
