在方法中从 Azure FileShare 读取文本文件

Question

我想使用 Azure.Storage.Files.Shares 库读取 Azure 存储帐户的 FileShare 中的 csv 文件的内容。

我可以使用 ShareFileClient 连接到文件，但是我如何才能在我的代码中读取内容并处理它们（追加新行）？

ShareFileClient file = ConnectToFile();
Steam content = await file.OpenReadAsync(true);
// gives a Stream object, that I cannot get to work to get the content.

流式传输此文件内容的下一步是什么？我一直在尝试让读取操作与

之类的东西一起工作

using (Steam stream = new Stream() )
{       
 
    // The actions to read the stream go here 
}

关于如何实现这一点有什么建议吗？

Answer 1

问题请参考以下代码

 // read
            using (var stream = await file.OpenReadAsync().ConfigureAwait(false))
            using (var reader = new StreamReader(stream)) {
                // read csv file one line by line 
                while (!reader.EndOfStream) {
                  var line =await  reader.ReadLineAsync().ConfigureAwait(false);
                    Console.WriteLine(line);
                }
            }

            //write
            ShareFileProperties properties = await file.GetPropertiesAsync().ConfigureAwait(false);
            var myPosition = properties.ContentLength;
            var newData = "42,11,58, \"N\",85,12,45, \"W\", \"Worcester\", ND"+Environment.NewLine;
            var bytes = Encoding.UTF8.GetBytes(newData);
            await file.SetHttpHeadersAsync(myPosition + bytes.Length);
            using (var writer = await file.OpenWriteAsync(overwrite: false, position:(myPosition -1)).ConfigureAwait(false)) {
               
                await writer.WriteAsync(bytes, 0, bytes.Length);
                await writer.FlushAsync();
            }

在方法中从 Azure FileShare 读取文本文件

read text file from Azure FileShare in a method

c#

filestream

azure-storage-files

asp.net-core-3.1