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SignatureCollection.CreateSignature Method (Microsoft.Office.InfoPath)

Creates a new Signature object without adding it to the form.

Namespace: Microsoft.Office.InfoPath
Assembly: Microsoft.Office.InfoPath (in microsoft.office.infopath.dll)
public abstract Signature CreateSignature ()

Return Value

A new Signature object that contains a snapshot of the view plus additional signature information.
Exception typeCondition

SecurityException

The form template is not configured for Full Trust using the Security and Trust category of the Form Options dialog box.

The CreateSignature method creates a new signature (gets a snapshot of the view plus additional signature information) without adding the signature to the form. To add this signature to the form, you must call the Sign method of the Signature class.

The method can be called only from an event handler for the Sign event.

This member can be accessed only by forms opened from a form template that as been configured to run with full trust using the Security and Trust category of the Form Options dialog box. This member requires full trust for the immediate caller and cannot be used by partially trusted code. For more information, see "Using Libraries from Partially Trusted Code" on MSDN.

This type or member can be accessed only from code running in forms opened in Microsoft Office InfoPath 2007.

The following example shows the code skeleton that is added to the form template when you add an event handler for the Sign event. It uses the CreateSignature method to create a new Signature object. When the Sign method of the Signature class is called, the new Signature object is added to the SignatureCollection object of the form.

public void FormEvents_Sign(object sender, SignEventArgs e)
{
   // This event handler will run only in fully trusted form templates.

   Signature thisSignature = 
      e.SignedDataBlock.Signatures.CreateSignature();

   // To add other pieces of information to sign, modify the
   // signature template returned by
   // thisSignature.SignatureBlockXmlNode.
   // Write your code here.

   thisSignature.Sign();
   e.SignatureWizard = false;
}
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