DataReaderWriter

page_type	languages	products	urlFragment	extendedZipContent	description
sample	csharp cpp cppcx	windows windows-uwp	DataReaderWriter	path target SharedContent SharedContent path target LICENSE LICENSE	Shows how to use the DataReader and DataWriter classes to store and retrieve data.

Serializing and deserializing data sample

Shows how to use the DataReader and DataWriter classes to store and retrieve data.

Note: This sample is part of a large collection of UWP feature samples. You can download this sample as a standalone ZIP file from docs.microsoft.com, or you can download the entire collection as a single ZIP file, but be sure to unzip everything to access shared dependencies. For more info on working with the ZIP file, the samples collection, and GitHub, see Get the UWP samples from GitHub. For more samples, see the Samples portal on the Windows Dev Center.

Specifically, this sample shows how to:

• Create a memory-backed stream by using the InMemoryRandomAccessStream class and storing strings by using a DataWriter object. When the write operation completes, a DataReader object extracts the stored strings from the stream and displays them.
• Open a sequential-access stream over an image by using the OpenSequentialReadAsync and ReadBytes methods to retrieve and display its binary data.

Note The Windows universal samples require Visual Studio to build and Windows 10 to execute.

To obtain information about Windows 10 development, go to the Windows Dev Center

To obtain information about Microsoft Visual Studio and the tools for developing Windows apps, go to Visual Studio

Related topics

Other topics

DataReader
DataWriter
OpenSequentialReadAsync
InMemoryRandomAccessStream

Reference

Streams

Related samples

• DataReaderWriter sample for JavaScript (archived)

System requirements

• Windows 10

Build the sample

1. If you download the samples ZIP, be sure to unzip the entire archive, not just the folder with the sample you want to build.
2. Start Microsoft Visual Studio and select File > Open > Project/Solution.
3. Starting in the folder where you unzipped the samples, go to the Samples subfolder, then the subfolder for this specific sample, then the subfolder for your preferred language (C++, C#, or JavaScript). Double-click the Visual Studio Solution (.sln) file.
4. Press Ctrl+Shift+B, or select Build > Build Solution.

Run the sample

The next steps depend on whether you just want to deploy the sample or you want to both deploy and run it.

Deploying the sample

• Select Build > Deploy Solution.

Deploying and running the sample

• To debug the sample and then run it, press F5 or select Debug > Start Debugging. To run the sample without debugging, press Ctrl+F5 or selectDebug > Start Without Debugging.