加密和解密Excel文件

使用Microsoft Excel

在Microsoft Excel(例如Microsoft Excel 2003)中设置文件加密设置:

  1. 工具菜单中选择选项。会出现一个对话框。
  2. 选择安全选项卡。
  3. 输入密码并点击高级
  4. 选择加密类型并确认密码。

使用Aspose.Cells对Excel文件进行加密

下面的示例显示了如何使用Aspose.Cells API对Excel文件进行加密和密码保护。

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
// Instantiate a Workbook object.
// Open an excel file.
Workbook workbook = new Workbook(dataDir + "Book1.xls");
// Specify XOR encryption type.
workbook.SetEncryptionOptions(EncryptionType.XOR, 40);
// Specify Strong Encryption type (RC4,Microsoft Strong Cryptographic Provider).
workbook.SetEncryptionOptions(EncryptionType.StrongCryptographicProvider, 128);
// Password protect the file.
workbook.Settings.Password = "1234";
// Save the excel file.
workbook.Save(dataDir + "encryptedBook1.out.xls");

指定修改密码选项

下面的示例显示了如何使用Aspose.Cells API为现有文件设置修改密码 Microsoft Excel选项。

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
// Instantiate a Workbook object.
// Open an excel file.
Workbook workbook = new Workbook(dataDir + "Book1.xls");
// Set the password for modification.
workbook.Settings.WriteProtection.Password = "1234";
// Save the excel file.
workbook.Save(dataDir + "SpecifyPasswordToModifyOption.out.xls");

使用Aspose.Cells对Excel文件进行解密

使用Aspose.Cells API以以下代码非常轻松地打开密码保护的Excel文件并进行解密:

//Open encrypted file with password.
LoadOptions loadOptions = new LoadOptions();
loadOptions.Password = "password";
Workbook workbook = new Workbook("Book1.xlsx", loadOptions);
//Remove password.
workbook.Settings.Password = null;
//Save the file.
workbook.Save("Book1.xlsx");

高级主题