Open an existing workbook in a newly created instance of IWorkbook.

Syntax

Visual Basic (Declaration)
Function OpenFromMemory( _ ByVal buffer() As Byte _ ) As IWorkbook

C#
IWorkbook OpenFromMemory( byte[] buffer )

Parameters

buffer

Return Value

The opened workbook.

Example

C# Copy Code

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(); // Set Sheet1!A1 to "Hello World!". workbook.Worksheets["Sheet1"].Cells["A1"].Value = "Hello World!"; // Save to memory as an Excel file. byte[] buffer = workbook.SaveToMemory(SpreadsheetGear.FileFormat.XLS97); // Close the workbook, removing it from the workbook set. workbook.Close(); // Open the saved workbook from memory. workbook = workbookSet.Workbooks.OpenFromMemory(buffer); // Output Sheet1!A1. System.Console.WriteLine(workbook.Worksheets["Sheet1"].Cells["A1"].Value.ToString()); } }

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();

       // Set Sheet1!A1 to "Hello World!".

       workbook.Worksheets["Sheet1"].Cells["A1"].Value = "Hello World!";

       // Save to memory as an Excel file.

       byte[] buffer =
workbook.SaveToMemory(SpreadsheetGear.FileFormat.XLS97);

       // Close the workbook, removing it from the workbook set.

       workbook.Close();

       // Open the saved workbook from memory.

       workbook = workbookSet.Workbooks.OpenFromMemory(buffer);

       // Output Sheet1!A1.

       System.Console.WriteLine(workbook.Worksheets["Sheet1"].Cells["A1"].Value.ToString());

   }

}

Visual Basic Copy Code

Visual Basic	Copy 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() ' Set Sheet1!A1 to "Hello World!". workbook.Worksheets("Sheet1").Cells("A1").Value = "Hello World!" ' Save to memory as an Excel file. Dim buffer As Byte() = workbook.SaveToMemory(SpreadsheetGear.FileFormat.XLS97) ' Close the workbook, removing it from the workbook set. workbook.Close() ' Open the saved workbook from memory. workbook = workbookSet.Workbooks.OpenFromMemory(buffer) ' Output Sheet1!A1. System.Console.WriteLine(workbook.Worksheets("Sheet1").Cells("A1").Value.ToString()) End Sub 'Main End Class 'Program

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()

        ' Set Sheet1!A1 to "Hello World!".

        workbook.Worksheets("Sheet1").Cells("A1").Value = "Hello World!"

        ' Save to memory as an Excel file.

        Dim buffer As Byte() = workbook.SaveToMemory(SpreadsheetGear.FileFormat.XLS97)

        ' Close the workbook, removing it from the workbook set.

        workbook.Close()

        ' Open the saved workbook from memory.

        workbook = workbookSet.Workbooks.OpenFromMemory(buffer)

        ' 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: x86 and x64 versions of Windows 2000, Windows XP, Windows Vista, Windows 7, Windows Server 2003 (including R2) and Windows Server 2008 (including R2). SpreadsheetGear 2009 requires the Microsoft .NET Framework 2.0 and supports .NET 3.0 and .NET 3.5.

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