1. IronPDF
  2. 故障排除
  3. 元數據可見性

MetaData 可見性

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MetaData 類別中可見的是什麼？

MetaData 對於能夠打開 PDF 的任何人來說都是可見的。

這些包括以下項目：

Pdf.MetaData.Author = "John Doe";
Pdf.MetaData.Keywords = "Key, Word";
Pdf.MetaData.CreationDate = DateTime.Today;
Pdf.MetaData.ModifiedDate = DateTime.Now;
Pdf.MetaData.CustomProperties.Add("Test", "val");
Pdf.MetaData.Producer = "test";
Pdf.MetaData.Subject = "test metadata";
Pdf.MetaData.Title = "test";
Pdf.MetaData.Creator = "test";

Pdf.SecuritySettings.UserPassword = "ironuser";
Pdf.SecuritySettings.OwnerPassword = "ironowner";
Pdf.MetaData.Author = "John Doe";
Pdf.MetaData.Keywords = "Key, Word";
Pdf.MetaData.CreationDate = DateTime.Today;
Pdf.MetaData.ModifiedDate = DateTime.Now;
Pdf.MetaData.CustomProperties.Add("Test", "val");
Pdf.MetaData.Producer = "test";
Pdf.MetaData.Subject = "test metadata";
Pdf.MetaData.Title = "test";
Pdf.MetaData.Creator = "test";

Pdf.SecuritySettings.UserPassword = "ironuser";
Pdf.SecuritySettings.OwnerPassword = "ironowner";
Pdf.MetaData.Author = "John Doe"
Pdf.MetaData.Keywords = "Key, Word"
Pdf.MetaData.CreationDate = DateTime.Today
Pdf.MetaData.ModifiedDate = DateTime.Now
Pdf.MetaData.CustomProperties.Add("Test", "val")
Pdf.MetaData.Producer = "test"
Pdf.MetaData.Subject = "test metadata"
Pdf.MetaData.Title = "test"
Pdf.MetaData.Creator = "test"

Pdf.SecuritySettings.UserPassword = "ironuser"
Pdf.SecuritySettings.OwnerPassword = "ironowner"
VB   C#
  • 只設定擁有者密碼時，使用者對 PDF 元數據具有完全訪問權限，包括檢視和修改所有文件屬性。
  • 只設定使用者密碼時，只有擁有密碼的人才能開啟 PDF。使用者可以檢視元數據屬性，但修改元數據受到限制。

請注意
Adobe Acrobat Pro允許使用者在提供UserPassword（如果已設定）的情況下編輯PDF的元數據。相對地，其他PDF查看器如Foxit要求使用者除了提供用於打開和查看PDF的UserPassword外，還需提供OwnerPassword才能編輯PDF的元數據。