ArgumentToExpressionConverter Class

Defines the mapping between arguments and expressions and provides the functionality to convert between these objects. Typically, this converter is used declaratively when using an ExpressionTextBox in a custom activity designer.

System.Object
  System.Activities.Presentation.Converters.ArgumentToExpressionConverter

Namespace:  System.Activities.Presentation.Converters
Assembly:  System.Activities.Presentation (in System.Activities.Presentation.dll)

public class ArgumentToExpressionConverter : IValueConverter

The ArgumentToExpressionConverter type exposes the following members.

  NameDescription
Public methodArgumentToExpressionConverterInitializes a new instance of the ArgumentToExpressionConverter class.
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  NameDescription
Public methodConvertConverts the specified argument into an expression.
Public methodConvertBackConverts the specified Argument.Expression into an argument.
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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This converter can also be used imperatively; however, this usage is not recommended.

The following XAML snippet shows how to use the ArgumentToExpressionConverter in a custom activity designer that uses an ExpressionTextBox.

<sapv:ExpressionTextBox 
    Expression="{Binding Path=ModelItem.SampleValue, 
                         Mode=TwoWay, 
                         Converter={StaticResource ArgumentToExpressionConverter}, 
                         ConverterParameter=In }"
    ExpressionType="s:String"
    OwnerActivity="{Binding Path=ModelItem}"
   />

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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