我正在寻找一个好方法从 Microsoft.SharePoint.Client.File 目标文件大小。

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

在客户端对象没有一个长度成员。

我尝试这样做：

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;
    }
}

其中通过使用的MemoryStream ，但它不适合表现给了我一个长度。此文件还不属于一个文档库。因为它是一个附加文件，我不能用它转换为列表项对象 ListItemAllFields 。如果我可以将其转换为列表项，我可以用得到它的大小：列表项[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"]

如何获得SharePoint中的客户端对象的文件大小使用C＃？

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

推荐答案

我不知道，如果这个问题被解决过，但对于人谁是寻找一个答案（像我一样）：

I don't know if this question was ever solved, but for the people who are looking for an answer (like I did) :

... $ C $下得到SP.FILE ...

... CODE FOR GETTING THE SP.FILE ...

SP.FileInformation fileInfo = SP.File.OpenBinaryDirect(ctx, mySPFile.ServerRelativeUrl);
byte[] bodyString = ReadToEnd(fileInfo.Stream);
int length = bodyString.Length;
Console.Write(length.ToString());

...做其他的东西，你需要做的......

... DO THE OTHER STUFF YOU NEED TO DO ....

    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，因为我无法在互联网上找到一个直接的答案！

Hope this will help other people, because I couldn't find a direct answer on the internet!