Gets and sets the property UserName. 
            
Name of the user to update. If you're changing the name of the user, this is the original user name.
 Declaration Syntax
 Declaration Syntax| C# | 
public string UserName { get; set; }
Name of the user to update. If you're changing the name of the user, this is the original user name.
 Declaration Syntax
 Declaration Syntax| C# | 
public string UserName { get; set; }