Writing to file giving unauthorized access in c#

Question

FileStream fs = new FileStream("C:\\Users\\admin\\Documents\\test1.rtf", FileMode.Open, FileAccess.Write);
StreamWriter sw = new StreamWriter(fs);
sw.WriteLine("Hello World");
sw.Dispose();
fs.Dispose();

This code is giving an unauthorized access error even though I declared the <rescap:Capability Name="broadFileSystemAccess"/> in the manifest and allowed the app those permissions in privacy setting in Windows 10. Any help is appreciated.

Answer 1

The problem is that you don't have used the Windows Storage namespace APIs. If you read the document File access permissions , you would know this point.

This capability( broadFileSystemAccess ) works for APIs in the Windows.Storage namespace.