Spread Windows Forms 11.0 Product Documentation
IsExcelStream(Stream,ExcelWorkbookType,Boolean) Method
Example 


FarPoint.Win.Spread Assembly > FarPoint.Win.Spread Namespace > FpSpread Class > IsExcelStream Method : IsExcelStream(Stream,ExcelWorkbookType,Boolean) Method
Stream
Workbook type
isEncrypt
Opens the specified file and determines whether it meets the minimal requirements to be considered a stream that contains an Excel workbook.
Syntax
'Declaration
 
Public Overloads Function IsExcelStream( _
   ByVal stream As Stream, _
   ByRef workbookType As ExcelWorkbookType, _
   ByRef isEncrypt 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 stream,
   ref ExcelWorkbookType workbookType,
   out bool isEncrypt
)

Parameters

stream
Stream
workbookType
Workbook type
isEncrypt
isEncrypt
Exceptions
ExceptionDescription
No stream specified or specified stream is null
No stream specified or specified stream is empty
Example
This example uses the IsExcelStream method.
FarPoint.Excel.ExcelWorkbookType en;
            en = FarPoint.Excel.ExcelWorkbookType.OOXML;
            bool isE;
            string s = "c:\\book1.xlsx";
            System.IO.FileStream str = new System.IO.FileStream(s, System.IO.FileMode.Open, System.IO.FileAccess.ReadWrite);

            bool b = fpSpread1.IsExcelStream(str, ref en, out isE);
            listBox1.Items.Add(b);
            if (b)
            {
                fpSpread1.OpenExcel(str, "Test");
            }
Dim s As String = "c:\Book1.xlsx"
        Dim str As New System.IO.FileStream(s, IO.FileMode.Open, IO.FileAccess.ReadWrite)
        Dim b As Boolean = fpSpread1.IsExcelStream(str, FarPoint.Excel.ExcelWorkbookType.OOXML, True)
        If b Then
            fpSpread1.OpenExcel(str, "Test")
        End If
See Also

Reference

FpSpread Class
FpSpread Members
Overload List