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Editorial Team
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Asked: 2026-05-26T17:25:15+00:00

I have two streams that i want to combine into one stream. The first

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I have two streams that i want to combine into one stream. The first stream is user-defined stringStream class that inherits from System.IO.Stream class and the second stream is a networkStream , I created an array of Stream with stores those two streams and pass it to a user-defined class combinedStream constructor as parameter. Below are the lines of code

StringStream stringStream = new StringStream("test string");
Stream[] streamArray = new Stream[2];
streamArray[0] = stringStream;
streamArray[1] = nsStream;//NetworkStream instance parameter
CombinedStream combinedStream = new CombinedStream(streamArray);
this.nsStream = (NetworkStream)combinedStream;

This the error i got : “Cannot convert CombinedStream to NetworkStream”
What could be the reason?

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1 Answer

  1. Editorial Team

    Fairly simply, because CombinedStream (which is presumably your own class) is not a NetworkStream. I wouldn’t expect it to be.

    The big question is why nsStream is meant to be a NetworkStream anyway. Can you change the type so it’s just Stream instead? That should be fine unless you’re using any NetworkStream-specific methods… and if you’re doing that, then what would you expect to happen when those methods were called on a CombinedStream?

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