c#实现pdf的另存为功能

今天跟大家分享一个实现pdf另存为的效果，是调用acrobat sdk的javascript实现的。

/// <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();
        }