/// <summary>         /// PDF另存为效果         /// </summary>         /// <param name="fileName">PDF文件名</param>         /// <param name="saveFileName">另存结果文件名</param>         public static void PDFSaveAs(String fileName, string saveFileName)         {             Acrobat.CAcroPDDoc pdfDoc = null;             pdfDoc = (Acrobat.CAcroPDDoc)Microsoft.VisualBasic.Interaction.CreateObject("AcroExch.PDDoc", "");             if (!pdfDoc.Open(fileName)) { string.Format("源文件{0}不存在！", fileName); }             Object jsObj = pdfDoc.GetJSObject();             Type T = jsObj.GetType();             object[] saveAsParam = { saveFileName, "com.adobe.acrobat.tiff" }; //com.adobe.acrobat.tiff 表示TIFF文件             T.InvokeMember(                 "saveAs",                 BindingFlags.InvokeMethod |                 BindingFlags.Public |                 BindingFlags.Instance,                 null, jsObj, saveAsParam);             pdfDoc.Close();         }