Aspose.Slides for .NET是一個獨特的演示處理API，它允許應用程序讀取、寫入、修改和轉換PowerPoint演示文稿。作為一個獨立的API，它提供了管理PowerPoint關鍵功能的功能，如管理文本、形狀、表格和動畫、向幻燈片添加音頻和視頻、預覽幻燈片等，而不需要Microsoft PowerPoint。

Aspose.Slides for .NET更新至v19.12，開始進行安全性審查，添加對文檔數字簽名的支持，為DataPoints添加顏色，修復了轉換為PDF時的一些問題，歡迎下載體驗。

下載Aspose.Slides最新版

key	概述	類別
SLIDESNET-41570	將PPTM保存到PPT時在保存中出現隨機NullReferenceException	調查
SLIDESNET-41354	Aspose.Slides的安全性審查	調查
SLIDESNET-33820	添加對文檔數字簽名的支持	增強功能
SLIDESNET-41274	為DataPoints添加顏色	增強功能
SLIDESNET-41487	支持生成的PDF以限制打印	增強功能
SLIDESNET-41510	PDF訪問權限	增強功能
SLIDESNET-41184	幻燈片未放置在適當的部分	增強功能
SLIDESNET-38950	導出的PDF中缺少ODP參議院項目符號編號	增強功能

更多更新細則請參考：【Aspose.Slides for .NET v19.12更新說明】

Aspose.Slides for .NET v19.12的API更改

• 添加IDigitalSignatureCollection 接口和DigitalSignatureCollection類 

  使用或將用于對演示文稿進行簽名的數字簽名的集合。IDigitalSignatureCollection聲明：

  /// <summary>
  /// Represents a collection of digital signatures attached to a document.
  /// </summary> public interface IDigitalSignatureCollection : IGenericCollection<IDigitalSignature> { /// <summary> /// Returns the signature by index. /// </summary> IDigitalSignature this[int index] { get; } /// <summary> /// Adds the signature at the end of collection. /// </summary> /// <param name="digitalSignature">Signature to add.</param> void Add(IDigitalSignature digitalSignature); /// <summary> /// Removes the signature at the specified index. /// </summary> /// <param name="index">Index of the signature that should be deleted.</param>; void RemoveAt(int index); /// <summary> /// Removes all signatures from collection. /// </summary> void Clear(); }

• 添加IDigitalSignature接口和DigitalSignature類

  根據使用的或將用于對演示文稿進行簽名的證書存儲有關數字簽名的信息。IDigitalSignature 聲明：

  /// <summary>
  /// Digital signature in signed file.
  /// </summary> public interface IDigitalSignature { /// <summary> /// Certificate object that was used to sign the document. /// Read-only <see cref="X509Certificate2"/>. /// </summary> X509Certificate2 Certificate { get; } /// <summary> /// If this digital signature is valid and the document has not been tampered with, this value will be true. /// Read-only <see cref="bool"/>. /// </summary> bool IsValid { get; } /// <summary> /// The time when the document was signed. /// Read-only <see cref="DateTime"/>. /// </summary> DateTime SignTime { get; } /// <summary> /// The purpose of signature. /// Read/write <see cref="string"/>. /// </summary> string Comments { get; set; } }