WindowsRuntimeStreamExtensions.AsStreamForWrite Method (IOutputStream)
.NET Framework (current version)
Converts an output stream in the Windows Runtime to a managed stream in the .NET for Windows 8.x Store apps.
This API is not CLS-compliant. Namespace: System.IO
Assembly: System.Runtime.WindowsRuntime (in System.Runtime.WindowsRuntime.dll)
[<CLSCompliantAttribute(false)>] static member AsStreamForWrite : windowsRuntimeStream:IOutputStream -> Stream
Parameters
- windowsRuntimeStream
- Type: IOutputStream
The Windows Runtime IOutputStream object to convert.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type IOutputStream. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).| Exception | Condition |
|---|---|
| ArgumentNullException | windowsRuntimeStream is a null reference (Nothing in Visual Basic). |
The following example shows how to use the AsStreamForWrite and AsStreamForRead methods to convert a managed stream to and from a stream in the Windows Runtime.
Here's the XAML code that is associated with the previous example.
<Page x:Class="ExampleApplication.BlankPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="using:ExampleApplication" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"> <StackPanel Background="{StaticResource ApplicationPageBackgroundBrush}" VerticalAlignment="Center" HorizontalAlignment="Center"> <TextBlock Text="Provide text to write to file:"></TextBlock> <TextBox Name="UserText" Width="400"></TextBox> <Button Name="CreateButton" Content="Create File" Click="CreateButton_Click"></Button> <Button Name="VerifyButton" Content="Verify Contents" Click="VerifyButton_Click"></Button> <TextBlock Name="Results"></TextBlock> </StackPanel> </Page>
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