iTextsharp.dll用于分割的实战实例

最新推荐文章于 2024-03-14 21:11:47 发布

置顶 SmallSoftware

最新推荐文章于 2024-03-14 21:11:47 发布

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分类专栏： C#学习之旅文章标签： PDF Split PDF分割 iTextsharp PDF 切割

本文链接：https://blog.youkuaiyun.com/qq_32025005/article/details/56840050

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上一篇博客说了我们公司项目里面用iTextsharp用于合并的一些情况和实例，那么当然有合并就得有切割，在切割上费了不少力气，下面是里面的部分代码，可以给大家参考一下。借鉴的依然是国外那个Wonderfulshare这家公司的PDF切割产品。

利用iTextsharp能很方便的获得PDF的相关属性，以下是相关代码。

try
            {
                properties = new Dictionary<string, string>();
                fileSecurity = new Dictionary<string, string>();
                properties.Add("Name", Info.Name);
                properties.Add("Pdf version", Reader.PdfVersion.ToString());
                properties.Add("Number of pages", Reader.NumberOfPages.ToString());
                properties.Add("DirectoryName", Info.DirectoryName);
                properties.Add("Length", Info.Length.ToString() + "(bytes)");
                properties.Add("IsReadOnly", Info.IsReadOnly.ToString());
                properties.Add("CreationTime", Info.CreationTime.ToString());
                properties.Add("LastAccessTime", Info.LastAccessTime.ToString());
                properties.Add("LastWriteTime", Info.LastWriteTime.ToString());

                fileSecurity.Add("Is encrypted", Reader.IsEncrypted().ToString());
                fileSecurity.Add("Is 128Key", Reader.Is128Key().ToString());
                fileSecurity.Add("Full permissions", Reader.IsOpenedWithFullPermissions.ToString());
                string sVal = PdfEncryptor.IsModifyAnnotationsAllowed((int)Reader.Permissions) ? "Allowed" : "Not allowed";
                fileSecurity.Add("Modify annotations", sVal);
                sVal = PdfEncryptor.IsModifyContentsAllowed((int)Reader.Permissions) ? "Allowed" : "Not allowed";
                fileSecurity.Add("Modify content", sVal);
                sVal = PdfEncryptor.IsPrintingAllowed((int)Reader.Permissions) ? "Allowed" : "Not allowed";
                fileSecurity.Add("Printing", sVal);
                sVal = PdfEncryptor.IsScreenReadersAllowed((int)Reader.Permissions) ? "Allowed" : "Not allowed";
                fileSecurity.Add("Screen readers", sVal);
                sVal = PdfEncryptor.IsDegradedPrintingAllowed((int)Reader.Permissions) ? "Allowed" : "Not allowed";
                fileSecurity.Add("Degraded printing", sVal);
                sVal = PdfEncryptor.IsFillInAllowed((int)Reader.Permissions) ? "Allowed" : "Not allowed";
                fileSecurity.Add("Fill In", sVal);
                sVal = PdfEncryptor.IsCopyAllowed((int)Reader.Permissions) ? "Allowed" : "Not allowed";
                fileSecurity.Add("Copy", sVal);
                sVal = PdfEncryptor.IsAssemblyAllowed((int)Reader.Permissions) ? "Allowed" : "Not allowed";
                fileSecurity.Add("Assembly", sVal);

                result = Define.Success;
            }

依旧要上借鉴的对方产品的图片