IIdentifierCreationService.ValidateIdentifier(Activity, String) Method
Definition
Important
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Provides a mechanism to test that an identifier is unique within an Activity.
public:
void ValidateIdentifier(System::Workflow::ComponentModel::Activity ^ activity, System::String ^ identifier);
public void ValidateIdentifier (System.Workflow.ComponentModel.Activity activity, string identifier);
abstract member ValidateIdentifier : System.Workflow.ComponentModel.Activity * string -> unit
Public Sub ValidateIdentifier (activity As Activity, identifier As String)
Parameters
- identifier
- String
The identifier to test for validity.
Examples
The following example shows an implementation of the IIdentifierCreationService. This service ensures that each of the identifiers used within the current workflow is unique.
void IIdentifierCreationService.ValidateIdentifier(Activity activity, string identifier)
{
if (identifier == null)
throw new ArgumentNullException("identifier");
if (activity == null)
throw new ArgumentNullException("activity");
if (activity.Name.ToLower().Equals(identifier.ToLower()))
return;
ArrayList identifiers = new ArrayList();
Activity rootActivity = GetRootActivity(activity);
identifiers.AddRange(GetIdentifiersInCompositeActivity(rootActivity as CompositeActivity));
identifiers.Sort();
if (identifiers.BinarySearch(identifier.ToLower(), StringComparer.OrdinalIgnoreCase) >= 0)
throw new ArgumentException(string.Format("Duplicate Component Identifier {0}", identifier));
}
Sub ValidateIdentifier(ByVal activity As Activity, ByVal identifier As String) Implements IIdentifierCreationService.ValidateIdentifier
If identifier Is Nothing Then
Throw New ArgumentNullException("identifier")
End If
If activity Is Nothing Then
Throw New ArgumentNullException("activity")
End If
If activity.Name.ToLower().Equals(identifier.ToLower()) Then
Return
End If
Dim identifiers As New ArrayList()
Dim rootActivity As Activity = GetRootActivity(activity)
identifiers.AddRange(GetIdentifiersInCompositeActivity(CType(rootActivity, CompositeActivity)))
identifiers.Sort()
If identifiers.BinarySearch(identifier.ToLower(), StringComparer.OrdinalIgnoreCase) >= 0 Then
Throw New ArgumentException(String.Format("Duplicate Component Identifier 0}", identifier))
End If
End Sub
Remarks
Use ValidateIdentifier to make sure an identifier is unique and properly formatted for use within a specified Activity.
Applies to
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