Opens the specified file and determines whether it meets the minimal requirements to be considered a stream containing an Excel workbook.
            
            
            
            
            
            
            
            'Declaration
 
Public Overloads Function IsExcelStream( _
   ByVal  As Stream, _
   ByRef  As ExcelWorkbookType, _
   ByRef  As Boolean _
) As Boolean
             
        
            
            'Usage
 
Dim instance As FpSpread
Dim stream As Stream
Dim workbookType As ExcelWorkbookType
Dim isEncrypt As Boolean
Dim value As Boolean
 
value = instance.IsExcelStream(stream, workbookType, isEncrypt)
             
        
            
            public bool IsExcelStream( 
   Stream ,
   ref ExcelWorkbookType ,
   out bool 
)
             
        
             
        
            Parameters
- stream
 
- Stream
 - workbookType
 
- Returns the type of Excel workbook
 - isEncrypt
 
- If set to 
true excel data is encrypted. 
            
            Return Value
true if the specified stream contains excel data; otherwise, false.
 
            Target Platforms: Windows 7, Windows 8, Windows Vista, Windows Server 2000, Windows 2000 Professional, Windows XP Professional, Windows NT 4.0 Workstation, SP6, Windows NT 4.0 Server, SP6