CODEWITHSUNDEEP
c#windows-runtimewindows-phone-8.1windows-8.1win-universal-app
Sevenate
Sevenate

Reputation: 6485

Convert string to IInputStream in C#

Is there a better way to implement conversion from a regular (large) string to IInputStream than this:

public static async Task<IInputStream> ToInputStream(this string input)
{
    byte[] bytes = Encoding.UTF8.GetBytes(input);

    var memoryStream = new InMemoryRandomAccessStream();
    await memoryStream.WriteAsync(bytes.AsBuffer());
    await memoryStream.FlushAsync();
    memoryStream.Seek(0);

    return memoryStream;
}

Upvotes: 3

Views: 1275

Answers (3)

Sevenate
Sevenate

Reputation: 6485

As suggested by Chris Guzak here is another version, based on DataWriter.WriteString():

public async static Task<IInputStream> ToInputStreamAsync(this string input)
{
    var ms = new InMemoryRandomAccessStream();

    using(var dw = new DataWriter(ms))
    {
        dw.WriteString(input);
        await dw.StoreAsync();
        dw.DetachStream();
    }

    return ms;
}

Although not sure which one is better.

Upvotes: 2

Chris Guzak
Chris Guzak

Reputation: 131

DataWriter.WriteString() can be used for this. It writes the value in a specific format so check to make sure this is what you want.

Upvotes: 1

Sevenate
Sevenate

Reputation: 6485

OK, looks like there is a bit shorter version:

public static IInputStream ToInputStream(this string input)
{
    byte[] bytes = Encoding.UTF8.GetBytes(input);
    MemoryStream stream = new MemoryStream(bytes);
    return stream.AsRandomAccessStream();
}

Upvotes: 3

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