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Identify corrupted file

We are using PDF.Net using .net core for adding Stamps and coversheet also merging . Some time we may get corrupted files . How to identify the file is corrupted before starting any other processes

thanks

@appuelex

You can check whether the source input is a valid PDF file or not by using IsPdfFile property as in the code sample below.

PdfFileInfo info = new PdfFileInfo(dataDir + "input.pdf");

if (info.IsPdfFile)
{
    Console.WriteLine("Valid PDF file");
}
else
{
    Console.WriteLine("Invalid PDF file");
}

You can use PdfFileEditor.CorruptedItems property to get encountered problems when concatenation is performed. Following code example shows how to use this property.

PdfFileEditor pfe = new PdfFileEditor();
pfe.CorruptedFileAction = PdfFileEditor.ConcatenateCorruptedFileAction.ConcatenateIgnoringCorrupted;
if (pfe.CorruptedItems.Length > 0)
{
    foreach (PdfFileEditor.CorruptedItem item in pfe.CorruptedItems)
    {
        Console.WriteLine(item.Index + " reason: " + item.Exception);
    }
}

Thanks it is working