我正在寻找一种从Microsoft.SharePoint.Client.File
对象获取文件大小的好方法。
Client
对象没有Length
成员
我试过了:
foreach (SP.File file in files)
{
string path = file.Path;
path = path.Substring(this.getTeamSiteUrl().Length);
FileInformation fileInformation = SP.File.OpenBinaryDirect(this.Context, path);
using (MemoryStream memoryStream = new MemoryStream())
{
CopyStream(fileInformation.Stream, memoryStream);
file.Size = memoryStream.Length;
}
}
这给了我一个长度通过使用MemoryStream
,但它不是很好的性能。该文件也不属于文档库。因为它是一个附加文件,我不能使用ListItemAllFields
将其转换为ListItem
对象。如果我可以将它转换为ListItem
,我可以使用:ListItem["File_x0020_Size"]
我如何得到Client
对象的文件大小在SharePoint使用c# ?
加载File_x0020_Size
字段信息获取
当我想列出Sharepoint 2010文件夹中的所有文件时,我就是这样做的:
//folderPath is something like /yoursite/yourlist/yourfolder
Microsoft.SharePoint.Client.Folder spFolder = _ctx.Web.GetFolderByServerRelativeUrl(folderPath);
_ctx.Load(spFolder);
_ctx.ExecuteQuery();
FileCollection fileCol = spFolder.Files;
_ctx.Load(fileCol);
_ctx.ExecuteQuery();
foreach (Microsoft.SharePoint.Client.File spFile in fileCol)
{
//In here, specify all the fields you want retrieved, including the file size one...
_ctx.Load(spFile, file => file.Author, file => file.TimeLastModified, file=>file.TimeCreated,
file => file.Name, file => file.ServerRelativeUrl, file => file.ListItemAllFields["File_x0020_Size"]);
_ctx.ExecuteQuery();
int fileSize = int.Parse((string)spFile.ListItemAllFields["File_x0020_Size"]);
}
_ctx
显然是您启动的ClientContext
。
你不能直接使用Stream属性的长度吗?
file.Size = fileInformation.Stream.Length;
我不知道这个问题是否曾经被解决过,但是对于那些正在寻找答案的人(就像我一样):
…获取SP.FILE的代码…
SP.FileInformation fileInfo = SP.File.OpenBinaryDirect(ctx, mySPFile.ServerRelativeUrl);
byte[] bodyString = ReadToEnd(fileInfo.Stream);
int length = bodyString.Length;
Console.Write(length.ToString());
…做你需要做的其他事情....
public static byte[] ReadToEnd(System.IO.Stream stream)
{
long originalPosition = 0;
if (stream.CanSeek)
{
originalPosition = stream.Position;
stream.Position = 0;
}
try
{
byte[] readBuffer = new byte[4096];
int totalBytesRead = 0;
int bytesRead;
while ((bytesRead = stream.Read(readBuffer, totalBytesRead, readBuffer.Length - totalBytesRead)) > 0)
{
totalBytesRead += bytesRead;
if (totalBytesRead == readBuffer.Length)
{
int nextByte = stream.ReadByte();
if (nextByte != -1)
{
byte[] temp = new byte[readBuffer.Length * 2];
Buffer.BlockCopy(readBuffer, 0, temp, 0, readBuffer.Length);
Buffer.SetByte(temp, totalBytesRead, (byte)nextByte);
readBuffer = temp;
totalBytesRead++;
}
}
}
byte[] buffer = readBuffer;
if (readBuffer.Length != totalBytesRead)
{
buffer = new byte[totalBytesRead];
Buffer.BlockCopy(readBuffer, 0, buffer, 0, totalBytesRead);
}
return buffer;
}
finally
{
if (stream.CanSeek)
{
stream.Position = originalPosition;
}
}
}
希望这将帮助其他人,因为我找不到一个直接的答案在互联网上!