Public Overloads Function OpenExcel( _
   ByVal stream As Stream, _
   ByVal warningList As ExcelWarningList _
) As Boolean

Dim instance As FpSpread
Dim stream As Stream
Dim warningList As ExcelWarningList
Dim value As Boolean
 
value = instance.OpenExcel(stream, warningList)

public bool OpenExcel( 
   Stream stream,
   ExcelWarningList warningList
)

string f; 
f = "D:\\pic.xls";
System.IO.FileStream s = new System.IO.FileStream(f, IO.FileMode.Open, IO.FileAccess.ReadWrite);
FarPoint.Excel.ExcelWarningList wl = new FarPoint.Excel.ExcelWarningList();
try 
{ 
     fpSpread1.OpenExcel(s, wl); 
} 
catch (Exception ex) 
{ 
     MessageBox.Show(ex.Message); 
}

Dim f As String 
f = "D:\testforexception.xls"
Dim s As New System.IO.FileStream(f, IO.FileMode.Open, IO.FileAccess.ReadWrite)
Dim wl As New FarPoint.Excel.ExcelWarningList
Try
     FpSpread1.OpenExcel(s, wl)
     Catch ex As Exception
     MessageBox.Show(ex.Message)
End Try