StringWriter与StreamWriter包装MemoryStream -差异

Question

我有以下代码：

        byte[] snapthotBytes, snapthotBytes2;
        string stringOutput, stringOutput2;
        IInvestigationDump investigationDump = new HtmlSnapshotDump();
        using (TextWriter writer = new StringWriter())
        {
            investigationDump.Dump(investigation, writer);
            snapthotBytes = Encoding.UTF8.GetBytes(writer.ToString());
            stringOutput = writer.ToString();
        } // end of first implementation

        using (MemoryStream stream = new MemoryStream())
        using (TextWriter writer = new StreamWriter(stream))
        {
            investigationDump.Dump(investigation, writer);
            stream.Seek(0, SeekOrigin.Begin);
            var reader = new StreamReader(stream);
            stringOutput2 = reader.ReadToEnd();
            snapthotBytes2 = stream.ToArray();
        } // end of second implementation

        // stringOutput != stringOutput2 - content wise
        // snapthotBytes != snapthotBytes2 - content wise

导言：

• 转储方法只是遍历调查对象并呈现一个HTML (通过将StringWriter使用UTF-16编码和XML声明这一事实写入编写器)，stringOutput和stringOutput2都应该具有相同的内容。转储方法签名是：

void Dump(IInvestigation investigation, TextWriter writer);

• Dump方法只是写入编写器，没有任何条件，等等

。

起初，我使用了MemoryStream代码片段，因为我直接收到了byte[]代码片段，这样就更容易了。但很快我发现了一个窃听器。令人惊讶的是，stringOutput2 (由MemoryStream解决方案生产)被裁剪，它更短了！它只是以修剪过的HTML内容结束：

        <tr>
          <td>Certificate or License No</td>
          <td class="value">Friuan</td>
          <td>Place of Issue</td>
          <td class="value">Foruan</td>
        </tr>
        <tr>
          <td>Award Date</td>
          <td 

Answer 1

怎么样

writer.Flush()

在试着读溪流之前？