'宣言 Public Function FindInSpan( _ ByVal textToFind As String, _ ByVal spanToSearch As Infragistics.Documents.RichText.DocumentSpan, _ ByRef error As String, _ Optional ByVal findCriteria As Infragistics.Documents.RichText.FindCriteria _ ) As Integer
public int FindInSpan( string textToFind, Infragistics.Documents.RichText.DocumentSpan spanToSearch, out string error, Infragistics.Documents.RichText.FindCriteria findCriteria )