SpreadsheetGear The Performance Spreadsheet Component Company 
Open Method
See Also  Example
SpreadsheetGear Namespace > IWorkbooks Interface : Open Method
filename
The filename of the workbook to open.
Open an existing workbook in a newly created instance of IWorkbook.

Syntax

C# 
virtual IWorkbook Open( 
   string filename
)

Parameters

filename
The filename of the workbook to open.

Return Value

The opened workbook.

Example

C#Copy Code
class Program 
{ 
    static void Main() 
    { 
        // Create a new empty workbook set. 
        SpreadsheetGear.IWorkbookSet workbookSet = SpreadsheetGear.Factory.GetWorkbookSet(); 
        // Create a new empty workbook in the workbook set. 
        SpreadsheetGear.IWorkbook workbook = workbookSet.Workbooks.Add(); 
        // Save to C:\MyData.xls. 
        workbook.SaveAs("C:\\MyData.xls", SpreadsheetGear.FileFormat.XLS97); 
        // Set Sheet1!A1 to "Hello World!". 
        workbook.Worksheets["Sheet1"].Cells["A1"].Value = "Hello World!"; 
        // Save to C:\MyData.xls again. 
        workbook.Save(); 
        // Close the workbook, removing it from the workbook set. 
        workbookSet.Workbooks.Close(); 
        // Open the saved workbook from memory. 
        workbook = workbookSet.Workbooks.Open("C:\\MyData.xls"); 
        // Output Sheet1!A1. 
        System.Console.WriteLine(workbook.Worksheets["Sheet1"].Cells["A1"].Value.ToString()); 
    } 
} 
    
Visual BasicCopy Code
Class Program
    Shared Sub Main()
        ' Create a new empty workbook set.
        Dim workbookSet As SpreadsheetGear.IWorkbookSet = SpreadsheetGear.Factory.GetWorkbookSet()
        ' Create a new empty workbook in the workbook set.
        Dim workbook As SpreadsheetGear.IWorkbook = workbookSet.Workbooks.Add()
        ' Save to C:\MyData.xls as an Excel file.
        workbook.SaveAs("C:\\MyData.xls", SpreadsheetGear.FileFormat.XLS97)
        ' Set Sheet1!A1 to "Hello World!".
        workbook.Worksheets("Sheet1").Cells("A1").Value = "Hello World!"
        ' Save to C:\MyData.xls again.
        workbook.Save()
        ' Close the workbook, removing it from the workbook set.
        workbookSet.Workbooks.Close()
        ' Open the saved workbook from memory.
        workbook = workbookSet.Workbooks.Open("C:\\MyData.xls")
        ' Output Sheet1!A1.
        System.Console.WriteLine(workbook.Worksheets("Sheet1").Cells("A1").Value.ToString())
    End Sub 'Main
End Class 'Program

Remarks

The various workbook settings which make a workbook read-only in an end user workbookSet have no affect at this level. These settings are available as IWorkbook properties.

Requirements

Platforms: Windows Vista, Windows XP, Windows Server 2008, Windows Server 2003, Windows 2000, Windows Me and Windows 98, including 32 bit and 64 bit editions where applicable. SpreadsheetGear for .NET 1.x requires the Microsoft .NET Framework 1.1 or .NET 2.0 (works with .NET 3.x). SpreadsheetGear for .NET 2007 requires the Microsoft .NET Framework 2.0 (works with .NET 3.x).

See Also