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