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This is the top level group for Microsoft Windows Workflow Foundation. Find blogs, samples, videos, and learning resources for various versions of workflow including 3.0, 3.5, and 4.0 here.
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(WF4) ExpressionTextBox Expression Property and ArgumentToExpressionConverter
Syndicated Workflow Author
There are many examples of binding ETB, but I notice they tend to be short on the details of why the example code looks as it does. Maybe it is because we are short on the ‘why’ that people can get a little lost once they want to do something other than the well-documented scenarios (e.g...
Mon, Sep 5 2011
Dynamically binding the expression type in the property grid
Previously, I demonstrated how to use an ExpressionTextBox in a custom property editor . In this followup post, I will show how to dynamically bind the ExpressionType of the ExpressionTextBox to the type of the argument of the custom activity. We don’t provide a type converter for this out of the box...
Mon, Mar 29 2010
Using an ExpressionTextBox in a custom property editor
I have fielded a couple of questions from customers and also a forum post asking how to get the binding correct for the ExpressionTextBox correct in the property grid (well Eric fielded that one with some help on our side, thanks Eric!). For the record here are the details and an explanation. WPF provides...
Mon, Mar 22 2010
Hostable editor keyboard shortcuts
In my previous post about keyboard shortcuts , I promised a summary of the hostable editor shortcuts. I waited on purpose until after the RC build to make this post. There were a couple of reasons for holding off: we changed the way WF designer shortcuts were scoped, and a bunch of shortcuts were broken...
Tue, Mar 2 2010
About type coercion
The hosted compiler does something called type coercion. It converts one type to another type using the widening and narrowing conversions specified by the big VB compiler. On the whole, this is very useful functionality. It allows you to strongly type your arguments but still set your Int16 variable...
Thu, Jan 28 2010
End-to-end expression editing feature deck
Hi, today I gave a talk to our support team about the expression editing feature. Since this is all public facing information, I thought I would post the deck. Some of this information is old hat to regular readers of this blog (especially the overview and programmability bits, which I ported straight...
Thu, Jan 21 2010
Enter and Tab key handling in the ExpressionTextBox
The Enter and Tab keys work a bit differently in the ExpressionTextBox than in the big VB IDE. In the big IDE, Enter and Tab always insert their associated characters. If the IntelliSense completion list is up, Enter selects the item and inserts a new line. We noticed that big IDE behavior does not always...
Mon, Jan 18 2010
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