WorkbookBase.HasPassword Property

Definition

Namespace:

Microsoft.Office.Tools.Excel

Assembly:

Microsoft.Office.Tools.Excel.v4.0.Utilities.dll

Gets a value that indicates whether the workbook has a protection password.

public:
 property bool HasPassword { bool get(); };

public bool HasPassword { get; }

member this.HasPassword : bool

Public ReadOnly Property HasPassword As Boolean

Property Value

Boolean

true if the workbook has a protection password; otherwise, false.

Examples

The following code example checks the value of the HasPassword property to determine whether the workbook is password protected. If the workbook is not password protected, then the example sets the Password property to a password obtained from user input, and then calls the SetPasswordEncryptionOptions method to set the encryption algorithm, set the key length, set the name of the encryption provider, and enable file property encryption. The example then displays the values of the PasswordEncryptionProvider, PasswordEncryptionAlgorithm, PasswordEncryptionKeyLength, and PasswordEncryptionFileProperties properties in worksheet Sheet1. This example assumes the existence of a method named GetPasswordFromUserInput that obtains a strong password from user input.

This example is for a document-level customization.

private void WorkbookPasswordOptions()
{
    if (!this.HasPassword)
    {
        this.Password = GetPasswordFromUserInput();
        this.SetPasswordEncryptionOptions(
            "Microsoft RSA SChannel Cryptographic Provider",
            "RC4", 128, true);
    }

    // Display the password properties in Sheet1.
    Globals.Sheet1.Range["A1"].Value2 =
        "Password Encryption Provider:";
    Globals.Sheet1.Range["A2"].Value2 =
        "Password Encryption Algorithm:";
    Globals.Sheet1.Range["A3"].Value2 =
        "Password Encryption Key Length:";
    Globals.Sheet1.Range["A4"].Value2 =
        "Password Encryption File Properties:";
    Globals.Sheet1.Range["A1", "A4"].Columns.AutoFit();

    Globals.Sheet1.Range["B1"].Value2 =
        this.PasswordEncryptionProvider;
    Globals.Sheet1.Range["B2"].Value2 =
        this.PasswordEncryptionAlgorithm;
    Globals.Sheet1.Range["B3"].Value2 =
        this.PasswordEncryptionKeyLength;
    Globals.Sheet1.Range["B4"].Value2 =
        this.PasswordEncryptionFileProperties;
    Globals.Sheet1.Range["B1", "B4"].Columns.AutoFit();
}

Private Sub WorkbookPasswordOptions()
    If Not Me.HasPassword Then
        Me.Password = GetPasswordFromUserInput()
        Me.SetPasswordEncryptionOptions( _
            "Microsoft RSA SChannel Cryptographic Provider", _
            "RC4", 128, True)
    End If

    ' Display the password properties in Sheet1.
    Globals.Sheet1.Range("A1").Value2 = _
        "Password Encryption Provider:"
    Globals.Sheet1.Range("A2").Value2 = _
        "Password Encryption Algorithm:"
    Globals.Sheet1.Range("A3").Value2 = _
        "Password Encryption Key Length:"
    Globals.Sheet1.Range("A4").Value2 = _
        "Password Encryption File Properties:"
    Globals.Sheet1.Range("A1", "A4").Columns.AutoFit()

    Globals.Sheet1.Range("B1").Value2 = _
        Me.PasswordEncryptionProvider
    Globals.Sheet1.Range("B2").Value2 = _
        Me.PasswordEncryptionAlgorithm
    Globals.Sheet1.Range("B3").Value2 = _
        Me.PasswordEncryptionKeyLength
    Globals.Sheet1.Range("B4").Value2 = _
        Me.PasswordEncryptionFileProperties
    Globals.Sheet1.Range("B1", "B4").Columns.AutoFit()
End Sub