Update document password

GroupDocs.Merger allows to update password from password-protected document. The resultant document will have new password.
Here are the steps to update document password:

The following code sample demonstrates how to update document password:

string filePath = @"c:\sample.xlsx";
string filePathOut = @"c:\output\result.xlsx";

ILoadOptions loadOptions = new LoadOptions("SAMPLE_PASSWORD");
IUpdatePasswordOptions updateOptions = new UpdatePasswordOptions("NEW_SAMPLE_PASSWORD");

using (Merger merger = new Merger(filePath, loadOptions))
{
    merger.UpdatePassword(updateOptions);
    merger.Save(filePathOut);
}

More resources

Advanced Usage Topics 

To learn more about document merging features, please refer the advanced usage section.

GitHub Examples 

You may easily run the code above and see the feature in action in our GitHub examples:

Free Online App

Along with full featured .NET library we provide simple, but powerful free Apps.
You are welcome to merge your documents with our free online GroupDocs Merger App.