ChartSheetBase.Unprotect Method

Статья
07/25/2011

Removes protection from a Microsoft.Office.Tools.Excel.ChartSheetBase. This method has no effect if the sheet or 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 sheet or workbook. If the sheet or workbook is not protected with a password, this argument is ignored. If you omit this argument for a sheet that is protected with a password, you will be prompted for the password. If you omit this argument for a workbook that is protected with a password, the method fails.

Remarks

If you forget the password, you cannot unprotect the Microsoft.Office.Tools.Excel.ChartSheetBase. 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 all contents of the current Microsoft.Office.Tools.Excel.ChartSheetBase. The example then uses the ProtectContents property to verify that the chart sheet is protected, and then prompts the user to remove protection from the chart sheet by using the Unprotect method.

Private Sub ChartSheetProtection()
    Globals.Sheet1.Range("A1", "A5").Value2 = 22
    Globals.Sheet1.Range("B1", "B5").Value2 = 55

    Me.SetSourceData(Globals.Sheet1.Range("A1", "B5"), _
        Excel.XlRowCol.xlColumns)
    Me.ChartType = Excel.XlChartType.xl3DColumn

    Me.Protect(DrawingObjects:=True, Contents:=True, _
        Scenarios:=True, UserInterfaceOnly:=False)

    If Me.ProtectContents Then
        If DialogResult.Yes = MessageBox.Show("The chart sheet" & _
            " is protected. Unprotect the chart sheet?", _
            "Example", MessageBoxButtons.YesNo) Then
            Me.Unprotect()
        End If
    End If
End Sub

private void ChartSheetProtection()
{
    Globals.Sheet1.Range["A1", "A5"].Value2 = 22;
    Globals.Sheet1.Range["B1", "B5"].Value2 = 55;

    this.SetSourceData(Globals.Sheet1.Range["A1", "B5"],
        Excel.XlRowCol.xlColumns);
    this.ChartType = Excel.XlChartType.xl3DColumn;

    this.Protect(missing, true, true, true, false);

    if (this.ProtectContents)
    {
        if (DialogResult.Yes ==
            MessageBox.Show("The chart sheet is protected. " +
            "Unprotect the chart sheet?", "Example", 
            MessageBoxButtons.YesNo))
        {
            this.Unprotect(missing);
        }
    }
}

.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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