C# file.OpenWrite之后的MS Word/Excel文件已损坏
如果ContentLength不匹配,我试图通过编程方式在共享驱动器上更新或创建MS Word或Excel文件。该文件最初存储在Sharepoint数据库中。当文件被写入本地目录时,我能够成功地执行此操作,但是,当对网络驱动器上的文件执行此操作时,即使文件被重写,内容也会损坏,无法正确打开 我不确定问题是否出在C# file.OpenWrite之后的MS Word/Excel文件已损坏,c#,sharepoint,ms-office,file-writing,cross-server,C#,Sharepoint,Ms Office,File Writing,Cross Server,如果ContentLength不匹配,我试图通过编程方式在共享驱动器上更新或创建MS Word或Excel文件。该文件最初存储在Sharepoint数据库中。当文件被写入本地目录时,我能够成功地执行此操作,但是,当对网络驱动器上的文件执行此操作时,即使文件被重写,内容也会损坏,无法正确打开 我不确定问题是否出在WriteFile()中,是否有更好的方法使用file.Write和file.OpenWrite以外的其他内容创建或更新Excel/Word文件 我的代码如下: public void U
WriteFile()
中,是否有更好的方法使用file.Write
和file.OpenWrite
以外的其他内容创建或更新Excel/Word文件
我的代码如下:
public void UpsertSharepointFiles()
{
try
{
var spList = GetSharepointDirectories();
var targetDir = @"\\111.111.0.11\c$\websites\XXX\FormLibrary";
IntPtr token = IntPtr.Zero;
bool valid = LogonUser("administrator",
"XXX",
"XXX",
(int)LogonType.NewCredentials,
(int)LogonProvider.WinNT50,
ref token);
if (valid)
{
using (WindowsImpersonationContext context = WindowsIdentity.Impersonate(token))
{
CloseHandle(token);
//var targetDir = Server.MapPath("~/TempCopy");
//var targetDir = @"\\\\222.222.2.22\c$\websites\XXX\FormLibrary";
var targetDirInfo = new DirectoryInfo(targetDir);
var dirs = targetDirInfo.GetDirectories("*.*", SearchOption.AllDirectories);
if (spList != null)
{
foreach (var spFile in spList)
{
if (spFile.Content != null)
{
foreach (var dir in dirs)
{
var searchFile = dir.GetFiles(spFile.LeafName);
var currDirName = dir.Name;
if (currDirName == "ABBH")
{
currDirName = "ABB";
}
if (searchFile.Count() == 0) //Web Server - No, SP - Yes
{
CreateFileOnWebServer(currDirName, spFile, targetDir);
}
else // Web Server - Yes, SP - Yes
{
UpdateFileOnWebServer(searchFile, spFile, targetDir, currDirName);
}
}
}
}
foreach (var dir in dirs)
{
DeleteFilesOnWebServerNotInSharepointDb(dir, spList);
}
}
}
lblSuccessMessage.Text = "Forms Library in Website successfully synced with Sharepoint Forms Library!";
lblSuccessMessage.Visible = true;
}
}
catch (Exception)
{
lblErrorMessage.Text = "Error occurred when syncing Forms Library in Website. Please try again.";
lblErrorMessage.Visible = true;
}
}
private static void DeleteFilesOnWebServerNotInSharepointDb(DirectoryInfo dir, List<SharepointVO> spList)
{
var dirFileList = dir.GetFiles();
var filesOnServerNotInSharepointDb = dirFileList.Where(w => spList.All(s => s.LeafName != w.Name));
foreach (var file in filesOnServerNotInSharepointDb)
{
var fInfo = new FileInfo(file.DirectoryName + @"\" + file.Name).ToString();
System.IO.File.Delete(fInfo);
}
}
private static void UpdateFileOnWebServer(FileInfo[] searchFile, SharepointVO spFile, string targetDir,
string currDirName)
{
if (searchFile[0].Directory.Name == spFile.Directory)
{
// Replace file with Sharepoint file
if (spFile.ContentLength != searchFile[0].Length) //Checks only first file
{
WriteFile(currDirName, spFile, targetDir);
}
}
}
private static void CreateFileOnWebServer(string currDirName, SharepointVO spFile, string targetDir)
{
if (currDirName == spFile.Directory)
{
// Check if directory exists on server
if (Directory.Exists(targetDir + "/" + currDirName))
{
{
{
WriteFile(currDirName, spFile, targetDir);
}
}
}
else
{
Directory.CreateDirectory(targetDir + "/" + currDirName);
WriteFile(currDirName, spFile, targetDir);
}
}
}
private static void WriteFile(string currDirName, SharepointVO spFile, string targetDir)
{
using (
Stream fs =
System.IO.File.OpenWrite(targetDir + "/" + currDirName + "/" + spFile.LeafName))
{
fs.Write(spFile.Content, 0, spFile.Content.Length);
}
}
[DllImport("advapi32.dll", SetLastError = true)]
public static extern bool LogonUser(string lpszUsername, string lpszDomain, string lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken);
[DllImport("kernel32.dll")]
public static extern bool CloseHandle(IntPtr token);
enum LogonType
{
Interactive = 2,
Network = 3,
Batch = 4,
Service = 5,
Unlock = 7,
NetworkClearText = 8,
NewCredentials = 9
}
enum LogonProvider
{
Default = 0,
WinNT35 = 1,
WinNT40 = 2,
WinNT50 = 3
}
public void UpsertSharepointFiles()
{
尝试
{
var spList=getSharePointDirectory();
var targetDir=@“\\111.111.0.11\c$\websites\XXX\FormLibrary”;
IntPtr令牌=IntPtr.Zero;
bool valid=LogonUser(“管理员”,
“XXX”,
“XXX”,
(int)LogonType.NewCredentials,
(int)LogonProvider.WinNT50,
参考标记);
如果(有效)
{
使用(WindowsImpersonationContext=WindowsIdentity.Impersonate(令牌))
{
闭合手柄(令牌);
//var targetDir=Server.MapPath(“~/TempCopy”);
//var targetDir=@“\\\\222.222.2.22\c$\websites\XXX\FormLibrary”;
var targetDirInfo=新目录信息(targetDir);
var dirs=targetDirInfo.GetDirectories(“**”,SearchOption.AllDirectories);
if(spList!=null)
{
foreach(spList中的spvar文件)
{
如果(spFile.Content!=null)
{
foreach(目录中的var dir)
{
var searchFile=dir.GetFiles(spFile.LeafName);
var currDirName=dir.Name;
if(currDirName==“ABBH”)
{
currDirName=“ABB”;
}
if(searchFile.Count()==0)//Web服务器-否,SP-是
{
CreateFileOnWebServer(currDirName、spFile、targetDir);
}
else//Web服务器-是,SP-是
{
UpdateFileOnWebServer(searchFile、spFile、targetDir、currDirName);
}
}
}
}
foreach(目录中的var dir)
{
DeleteFilesOnWebServerNotInSharepointDb(dir,spList);
}
}
}
lblSuccessMessage.Text=“网站中的表单库已成功与Sharepoint表单库同步!”;
lblSuccessMessage.Visible=true;
}
}
捕获(例外)
{
lblErrorMessage.Text=“在网站中同步表单库时出错。请重试。”;
lblErrorMessage.Visible=true;
}
}
私有静态void DeleteFilesOnWebServerNotInSharepointDb(目录信息目录,列表列表)
{
var dirFileList=dir.GetFiles();
var filesOnServerNotInSharepointDb=dirFileList.Where(w=>spList.All(s=>s.LeafName!=w.Name));
foreach(filesOnServerNotInSharepointDb中的var文件)
{
var fInfo=new FileInfo(file.DirectoryName+@“\”+file.Name).ToString();
System.IO.File.Delete(fInfo);
}
}
私有静态void UpdateFileOnWebServer(FileInfo[]搜索文件,SharepointVO spFile,字符串targetDir,
字符串(名称)
{
if(searchFile[0].Directory.Name==spFile.Directory)
{
//将文件替换为Sharepoint文件
if(spFile.ContentLength!=searchFile[0].Length)//只检查第一个文件
{
WriteFile(currDirName、spFile、targetDir);
}
}
}
私有静态void CreateFileOnWebServer(字符串currDirName、SharepointVO spFile、字符串targetDir)
{
if(currDirName==spFile.Directory)
{
//检查服务器上是否存在目录
if(Directory.Exists(targetDir+“/”+currDirName))
{
{
{
WriteFile(currDirName、spFile、targetDir);
}
}
}
其他的
{
Directory.CreateDirectory(targetDir+“/”+currDirName);
WriteFile(currDirName、spFile、targetDir);
}
}
}
私有静态void WriteFile(字符串currDirName、SharepointVO spFile、字符串targetDir)
{
使用(
流fs=
System.IO.File.OpenWrite(targetDir+“/”+currDirName+“/”+spFile.LeafName))
{
写入(spFile.Content,0,spFile.Content.Length);
}
}
[DllImport(“advapi32.dll”,SetLastError=true)]
公共静态外部bool LogonUser(字符串lpszUsername、字符串lpszDomain、字符串lpszPassword、int-dwLogonType、int-dwLogonProvider、ref-IntPtr phToken);
[DllImport(“kernel32.dll”)]