如果我给了一个MemoryStream,我知道已经填充了一个字符串,我如何得到一个字符串回来?


当前回答

byte[] array = Encoding.ASCII.GetBytes("MyTest1 - MyTest2");
MemoryStream streamItem = new MemoryStream(array);

// convert to string
StreamReader reader = new StreamReader(streamItem);
string text = reader.ReadToEnd();

其他回答

只使用方法Convert。ToBase64String

Convert.ToBase64String(inputStream.ToArray());

稍微修改了Brian的答案,允许可选的读启动管理,这似乎是最简单的方法。可能不是最有效的,但容易理解和使用。

Public Function ReadAll(ByVal memStream As MemoryStream, Optional ByVal startPos As Integer = 0) As String
    ' reset the stream or we'll get an empty string returned
    ' remember the position so we can restore it later
    Dim Pos = memStream.Position
    memStream.Position = startPos

    Dim reader As New StreamReader(memStream)
    Dim str = reader.ReadToEnd()

    ' reset the position so that subsequent writes are correct
    memStream.Position = Pos

    Return str
End Function

你也可以使用

Encoding.ASCII.GetString(ms.ToArray());

我不认为这是低效率,但我不能保证。它还允许您选择不同的编码,而使用StreamReader时,您必须将其指定为参数。

我需要集成一个类,需要一个流写在它:

XmlSchema schema;
// ... Use "schema" ...

var ret = "";

using (var ms = new MemoryStream())
{
    schema.Write(ms);
    ret = Encoding.ASCII.GetString(ms.ToArray());
}
//here you can use "ret"
// 6 Lines of code

我创建了一个简单的类,可以帮助减少多次使用的代码行:

public static class MemoryStreamStringWrapper
{
    public static string Write(Action<MemoryStream> action)
    {
        var ret = "";
        using (var ms = new MemoryStream())
        {
            action(ms);
            ret = Encoding.ASCII.GetString(ms.ToArray());
        }

        return ret;
    }
}

然后可以用一行代码替换示例

var ret = MemoryStreamStringWrapper.Write(schema.Write);
byte[] array = Encoding.ASCII.GetBytes("MyTest1 - MyTest2");
MemoryStream streamItem = new MemoryStream(array);

// convert to string
StreamReader reader = new StreamReader(streamItem);
string text = reader.ReadToEnd();