WorkbookBase.Unprotect Method

Article
06/14/2013

Removes protection from the workbook. This method has no effect if the workbook is not protected.

Namespace: Microsoft.Office.Tools.Excel
Assembly: Microsoft.Office.Tools.Excel.v4.0.Utilities (in Microsoft.Office.Tools.Excel.v4.0.Utilities.dll)

Syntax

'Declaration
Public Sub Unprotect ( _
    password As Object _
)

public void Unprotect(
    Object password
)

Parameters

password
Type: System.Object

The case-sensitive password to use to unprotect the workbook. If the workbook is not protected with a password, this parameter is ignored. If you omit this parameter for a workbook that is protected with a password, the method fails.

Remarks

If you forget the password, you cannot unprotect the workbook. It is a good idea to keep a list of your passwords and their corresponding document names in a safe place.

Optional Parameters

For information on optional parameters, see Optional Parameters in Office Solutions.

Examples

The following code example uses the Protect method to protect the structure of the workbook and workbook windows, but without specifying password protection. The example then prompts the user to unprotect the workbook by using the Unprotect method.

This example is for a document-level customization.

Private Sub WorkbookUnprotect()
    MsgBox("Protecting the workbook.")
    Me.Protect(structure:=True, windows:=True)

    If DialogResult.Yes = MessageBox.Show( _
        "Unprotect the workbook?", "Custom Unprotect Dialog", _
        MessageBoxButtons.YesNo) Then 
        Me.Unprotect()
    End If 
End Sub

private void WorkbookUnprotect()
{
    MessageBox.Show("Protecting the workbook.");
    this.Protect( true, true);

    if (DialogResult.Yes == MessageBox.Show("Unprotect the workbook?",
        "Custom Unprotect Dialog", MessageBoxButtons.YesNo))
    {
        this.Unprotect();
    }
}

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

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