如何从 Microsoft.SharePoint.Client.File 对象获取文件大小? [英] How do I get the filesize from the Microsoft.SharePoint.Client.File object?

问题描述

我正在寻找一种从 Microsoft.SharePoint.Client.File 对象获取文件大小的好方法.

I'm looking for a good way to get filesize from the Microsoft.SharePoint.Client.File object.

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;
    }
}

通过使用 MemoryStream 给了我一个长度，但它对性能不利.此文件也不属于文档库.由于它是一个附加文件，我无法使用 ListItemAllFields 将其转换为 ListItem 对象.如果我可以将它转换为 ListItem，我可以使用以下方法获取它的大小:ListItem["File_x0020_Size"]

Which gave me a length through using the MemoryStream, but it's not good for performance. This file also does not belong to a document library. Since it's an attached file, I can't convert it to a ListItem object using ListItemAllFields. If I could convert it to a ListItem, I could get its size using: ListItem["File_x0020_Size"]

如何使用 C# 在 SharePoint 中获取 Client 对象的文件大小?

How do I get the filesize of the Client object in SharePoint using C#?

推荐答案

加载File_x0020_Size字段信息即可获取.

Load the File_x0020_Size field information to get it.

当我想列出 Sharepoint 2010 文件夹中的所有文件时，我会这样做:

This is what I do when I want to list all the files in a Sharepoint 2010 folder:

//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 显然是你发起的ClientContext.

这是一个 所有 Sharepoint 内部字段的扩展列表

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