User.UserName Property

Gets only the user's username.

Namespace:  Microsoft.Office.InfoPath
Assembly:  Microsoft.Office.InfoPath (in Microsoft.Office.InfoPath.dll)

public abstract string UserName { get; }

Property Value

Type: System.String
The user's username.

When the form is opened in the InfoPath editor, calling the UserName property is equivalent to calling System.Environment.UserName.

When the form is deployed to and opened from an appropriately configured document library in Microsoft SharePoint Server 2010 running InfoPath Forms Services, calling the UserName property is equivalent to calling the SharePoint SPUser.Name property. This can be different from calling SPUser.LoginName if the administrator decides to change the display name of the user. If you want to get to the actual account used to connect to the site you will have to use the LoginName property.


The Local Intranet zone permissions allow reading the username from the environment, so this method can be called by domain-based form templates.

This member can be accessed only by forms running in the same domain as the currently open form, or by forms that have been granted cross-domain permissions.

This type or member can be accessed from code running in forms opened in Microsoft InfoPath Filler or in a Web browser.

In the following example, clicking the Button control displays the current user's username only.

public void CTRL1_Clicked(object sender, ClickedEventArgs e)