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我创建了一个应用程序，可以下载SP站点中的所有文档库，但有一次它给了我这个错误（我试着看过谷歌，但不能找到任何东西，现在如果任何人都知道任何伎俩来解决这个问题，请回复否则谢谢你看它）解决文件路径太长的最佳方法例外
System.IO.PathTooLongException：指定的路径，文件名或这两者太长。完全限定的文件名必须少于260个字符，且目录名称必须少于248个字符。 （字符串路径，布尔fullCheck） 在系统.IO.Path.GetFullPathInternal（字符串路径） 在系统.IO.FileStream.Init ，布尔useRights，FileShare共享，Int32 bufferSize，FileOptions选项，SECURITY_ATTRIBUTES secAttrs，字符串msgPath，布尔bFromProxy） 在System.IO.FileStream..ctor（字符串路径，FileMode模式，FileAccess访问，FileShare共享，Int32 bufferSize，FileOptions选项） 在System.IO.File.Create（字符串路径）
它到达字符串极限，代码在下面给出，
#region Downloading Schemes
private void btnDownload_Click(object sender, EventArgs e)
{
TreeNode currentNode = tvWebs.SelectedNode;
SPObjectData objectData = (SPObjectData)currentNode.Tag;
try
{
CreateLoggingFile();
using (SPWeb TopLevelWeb = objectData.Web)
{
if(TopLevelWeb != null)
dwnEachWeb(TopLevelWeb, TopLevelWeb.Title, tbDirectory.Text);
}
}
catch (Exception ex)
{
Trace.WriteLine(string.Format("Exception caught when tried to pass TopLevelWeb:{1}, Title = {2}, object data to (dwnEachWeb_method), Exception: {0}", ex.ToString(), objectData.Web, objectData.Title));
}
finally
{
CloseLoggingFile();
}
}
private void dwnEachWeb(SPWeb TopLevelWeb, string FolderName, string CurrentDirectory)
{
if (TopLevelWeb != null)
{
if (TopLevelWeb.Webs != null)
{
CurrentDirectory = CurrentDirectory + "\\" + TopLevelWeb.Title;
CreateFolder(CurrentDirectory);
foreach (SPWeb ChildWeb in TopLevelWeb.Webs)
{
dwnEachWeb(ChildWeb, ChildWeb.Title, CurrentDirectory);
ChildWeb.Dispose();
}
dwnEachList(TopLevelWeb, CurrentDirectory);
//dwnEachList(TopLevelWeb, FolderName, CurrentDirectory);
}
}
}
private void dwnEachList(SPWeb oWeb, string CurrentDirectory)
{
foreach (SPList oList in oWeb.Lists)
{
if (oList is SPDocumentLibrary && !oList.Hidden)
{
dwnEachFile(oList.RootFolder, CurrentDirectory);
}
}
}
private void dwnEachFile(SPFolder oFolder, string CurrentDirectory)
{
if (oFolder.Files.Count != 0)
{
CurrentDirectory = CurrentDirectory + "\\" + oFolder.Name;
CreateFolder(CurrentDirectory);
foreach (SPFile ofile in oFolder.Files)
{
if (CreateDirectoryStructure(CurrentDirectory, ofile.Url))
{
var filepath = System.IO.Path.Combine(CurrentDirectory, ofile.Url);
byte[] binFile = ofile.OpenBinary();
System.IO.FileStream fstream = System.IO.File.Create(filepath);
fstream.Write(binFile, 0, binFile.Length);
fstream.Close();
}
}
}
}
//creating directory where files will be download
private bool CreateDirectoryStructure(string baseFolder, string filepath)
{
if (!Directory.Exists(baseFolder)) return false;
var paths = filepath.Split('/');
for (var i = 0; i < paths.Length - 1; i++)
{
baseFolder = System.IO.Path.Combine(baseFolder, paths[i]);
Directory.CreateDirectory(baseFolder);
}
return true;
}
//creating folders
private bool CreateFolder(string CurrentDirectory)
{
if (!Directory.Exists(CurrentDirectory))
{
Directory.CreateDirectory(CurrentDirectory);
}
return true;
}
//shorting string
#endregion
转换的UNC（或其他）路径为8.3格式。 [转换为使用CMD 8.3格式] [1] [1]：http://stackoverflow.com/questions/10227144/convert-long-filename-to-short-filename-8 -3-using-cmd-exe – AutomationNation 2014-04-07 16:47:35
[如何避免System.IO.PathTooLongException？]（http://stackoverflow.com/questions/530109/how-to-avoid-system-io-pathtoolongexception） – Deantwo 2017-03-14 12:41:17