_XDocument4.IsSigned property

Gets a value that indicates whether a Microsoft InfoPath form has been digitally signed using digital signatures.

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

Syntax

'Declaration
ReadOnly Property IsSigned As Boolean
    Get
'Usage
Dim instance As _XDocument4
Dim value As Boolean

value = instance.IsSigned

bool IsSigned { get; }

If the IsSigned property is true, the form has been digitally signed. If false, the form has not been digitally signed.

InfoPath uses XML Signatures to digitally sign forms.

Note

If a form has been digitally signed, its underlying XML document is placed in a read-only state.

In the following example, the IsSigned property of the XDocument object is used to determine whether a form has been digitally signed:

if (thisXDocument.IsSigned)
{
 thisXDocument.UI.Alert("This form contains digital signatures.");
}