Sharepoint Custom Activity for workflows : dependency property which is of type "Typed DataTable".
- 0Hi,
I m creating a sharepoint custom activity for workflows.
Can someone please tell me if it is feasible to create a dependency property which is of type "Typed DataTable"?
I have created a property as:
public static DependencyProperty DtProperty = DependencyProperty.Register("DtProperty", typeof(TypedDataTable.DataTable), typeof(Activity.OperationActivity));
[DesignerSerializationVisibilityAttribute(DesignerSerializationVisibility.Visible)]
[BrowsableAttribute(true)]
[CategoryAttribute("Misc")]
public TypedDataTable.DataTable dt1
{get
{
return ((TypedDataTable.DataTable)(base.GetValue(Activity.OperationActivity.DtProperty )));
}
set
{
base.SetValue(Activity.OperationActivity.DtProperty value);
}
}
It gives me below error message:
Could not create activity of type 'Activity.OperationActivity'. System.ArgumentException: Type 'Activity.OperationActivity' does not define a static dependency property with name 'DtPropertyProperty'.
Parameter name: ownerType
at System.Workflow.ComponentModel.DependencyProperty.ValidateAndRegister(String name, Type propertyType, Type ownerType, PropertyMetadata defaultMetadata, Type validatorType, Boolean isRegistered)
at System.Workflow.ComponentModel.DependencyProperty.Register(String name, Type propertyType, Type ownerType)
at Activity.OperationActivity..cctor()
Any help on this??- Moved byMichael Washam - MSFTMSFT, ModeratorMonday, January 05, 2009 1:42 PMmore appropriate (Moved from SharePoint - Development and Programming to SharePoint - Workflow)
- Edited byMike Walsh MVPMVP, ModeratorMonday, January 05, 2009 3:10 PM"for workflows" added to Subject
Answers
- 0Hi,
The correct code should be:
public static DependencyProperty DtProperty = DependencyProperty.Register("dt1", typeof(TypedDataTable.DataTable), typeof(Activity.OperationActivity));
......
public TypedDataTable.DataTable dt1
{
......
}
the 1st parameter of Register method must be a correct valid property name, and the 2nd parameter is the type of that property.
And I must remind you, if you want to use this property in SharePoint workflow, please ensure TypedDataTable.DataTable can be serialize.
My blog: http://xiaoshatian.cnblogs.com- Marked As Answer byLambert QinMSFT, ModeratorTuesday, January 13, 2009 8:56 AM
All Replies
- 0Moving to the workflow forums
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