用StreamWriter写入MemoryStream返回空
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我不确定自己在做什么错，已经看过很多例子，但是似乎无法解决这个问题。
public static Stream Foo()
{
var memStream = new MemoryStream();
var streamWriter = new StreamWriter(memStream);
for (int i = 0; i < 6; i++)
streamWriter.WriteLine(\"TEST\");
memStream.Seek(0, SeekOrigin.Begin);
return memStream;
}
[Test]
public void TestStreamRowCount()
{
var stream = Foo();
using (var reader = new StreamReader(stream))
{
var collection = new List<string>();
string input;
while ((input = reader.ReadLine()) != null)
collection.Add(input);
Assert.AreEqual(6, collection.Count);
}
}
没有找到相关结果
已邀请:
3 个回复
绵扇寸访
实例。public static Stream Foo() { var memStream = new MemoryStream(); var streamWriter = new StreamWriter(memStream); for (int i = 0; i < 6; i++) streamWriter.WriteLine(\"TEST\"); streamWriter.Flush(); <-- need this memStream.Seek(0, SeekOrigin.Begin); return memStream; }，因为它实现了，但是这又产生了另一个问题，它也会关闭底层的。 您确定要在这里退还6英镑吗？ 我将代码更改为此：public static byte[] Foo() { using (var memStream = new MemoryStream()) using (var streamWriter = new StreamWriter(memStream)) { for (int i = 0; i < 6; i++) streamWriter.WriteLine(\"TEST\"); streamWriter.Flush(); return memStream.ToArray(); } } [Test] public void TestStreamRowCount() { var bytes = Foo(); using (var stream = new MemoryStream(bytes)) using (var reader = new StreamReader(stream)) { var collection = new List<string>(); string input; while ((input = reader.ReadLine()) != null) collection.Add(input); Assert.AreEqual(6, collection.Count); } }距相镭
using(var memStream = new MemoryStream()) { .... return new MemoryStream(memStream.ToArray(), false /*writable*/); }娠频摩