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:

• Initialize LoadOptions class specifying current password;
• Instantiate Merger object with source document path or stream and pass LoadOptions object to it;
• Initialize UpdatePasswordOptions class specifying new document password;
• Call UpdatePassword method and pass UpdatePasswordOptions object to it;
• Call Save method specifying file path to save resultant document.

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:

• GroupDocs.Merger for .NET examples, plugins and showcase
• GroupDocs.Merger for Java examples, plugins and showcase

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.