比對兩個Word檔案內容是否一致的C#解決辦法

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using System;using System.Windows.Forms;using System.Diagnostics;using Microsoft.Office.Interop.Word;namespace WindowsFormsApplication1{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }               private void button1_Click(object sender, EventArgs e)        {            //載入之前首先判斷系統中是否包含WORD.EXE進程，如果包含，將其殺死,然後再進行查看            KillProcess();            MessageBox.Show(CompareWordFile(@"C:\1.DOC", @"C:\2.DOC").ToString());        }        public bool CompareWordFile(String source, String target)        {            object filename = source;            var targetFileName = target;            object missing = System.Reflection.Missing.Value;            object readonlyobj = false;            var app = new ApplicationClass { Visible = false };            var doc = app.Documents.Open(ref filename, ref missing, ref readonlyobj, ref missing,                ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing);            doc.TrackRevisions = true;            doc.ShowRevisions = true;            doc.PrintRevisions = true;            object comparetarget = WdCompareTarget.wdCompareTargetNew;            doc.Compare(targetFileName, ref missing, ref comparetarget, ref missing, ref missing, ref missing, ref missing, ref missing);            var changeCount = app.ActiveDocument.Revisions.Count;            Object saveChanges = WdSaveOptions.wdDoNotSaveChanges;            doc.Close(ref saveChanges, ref missing, ref missing);            app.Quit(ref saveChanges, ref missing, ref missing);            return changeCount == 0;        }        public void KillProcess()        {            const string processName = "WINWORD";            var process = Process.GetProcessesByName(processName);            try            {                foreach (var p in process)                {                    p.Kill();                }            }            catch (Exception)            {                MessageBox.Show("請先關閉系統中的WINWORD.EXE進程!", "檔案對比失敗", MessageBoxButtons.OK);                return;            }        }    }}