.NET Framework Class Library
WriteLine Class
Writes a specified string to a specified TextWriter object.
Inheritance Hierarchy
System.Object
System.Activities.Activity
System.Activities.CodeActivity
System.Activities.Statements.WriteLine
Namespace: System.Activities.Statements
Assembly: System.Activities (in System.Activities.dll)
Syntax
Visual Basic
<ContentPropertyAttribute("Text")> _ Public NotInheritable Class WriteLine _ Inherits CodeActivity
C#
[ContentPropertyAttribute("Text")] public sealed class WriteLine : CodeActivity
Visual C++
[ContentPropertyAttribute(L"Text")] public ref class WriteLine sealed : public CodeActivity
F#
[<Sealed>] [<ContentPropertyAttribute("Text")>] type WriteLine = class inherit CodeActivity end
The WriteLine type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
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WriteLine | Creates a new instance of the WriteLine class. |
Properties
| Name | Description | |
|---|---|---|
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CacheId | Gets the identifier of the cache that is unique within the scope of the workflow definition. (Inherited from Activity.) |
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Constraints | Gets a collection of Constraint activities that can be configured to provide validation for the Activity. (Inherited from Activity.) |
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DisplayName | Gets or sets an optional friendly name that is used for debugging, validation, exception handling, and tracking. (Inherited from Activity.) |
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Id | Gets an identifier that is unique in the scope of the workflow definition. (Inherited from Activity.) |
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Implementation | Not supported. (Inherited from CodeActivity.) |
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Text | The text to write. |
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TextWriter | The TextWriter to write the Text to. |
Methods
| Name | Description | |
|---|---|---|
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CacheMetadata(ActivityMetadata) | Not implemented. Use CacheMetadata(CodeActivityMetadata) instead. (Inherited from CodeActivity.) |
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CacheMetadata(CodeActivityMetadata) | Creates and validates a description of the activity’s arguments, variables, child activities, and activity delegates. (Inherited from CodeActivity.) |
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Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
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Execute | When implemented in a derived class, performs the execution of the activity. (Inherited from CodeActivity.) |
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Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
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GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
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GetType | Gets the Type of the current instance. (Inherited from Object.) |
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MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
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ShouldSerializeDisplayName | Indicates whether the DisplayName property should be serialized. (Inherited from Activity.) |
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ToString | Returns a String that contains the Id and DisplayName of the Activity. (Inherited from Activity.) |
Version Information
.NET Framework
Supported in: 4.NET Framework Client Profile
Supported in: 4Platforms
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.See Also
Reference
Community Content
Ron Jacobs
To Capture Output from WriteLine add a StringWriter extension
The WriteLine activity looks for a TextWriter first in the TextWriter property and then it looks for an extension of type TextWriter. If it can't find either one it will use Console.Out.
Your host application can add a StringWriter to the extensions collection to automatically capture the output from all WriteLine activities.
protected override void Execute(CodeActivityContext context)
{
TextWriter writer = this.TextWriter.Get(context);
if (writer == null)
{
writer = context.GetExtension<TextWriter>() ?? Console.Out;
}
writer.WriteLine(this.Text.Get(context));
}