The PreviewKeyDown event also works for the Down Arrow key down, as in the sample provided with the article.
We would invoke the search only after certain numbers of characters are keyed into the Textbox. We have a control over the search through this property. Note the use of the Search Threshold value to invoke the search. We will use the TextChanged event to trigger the Search on our data. TxtSearch.VerticalContentAlignment = VerticalAlignment.Center TxtSearch.PreviewKeyDown += new KeyEventHandler(txtSearch_PreviewKeyDown) TxtSearch.TextChanged += new TextChangedEventHandler(Search_TextChanged) The Textbox is added to the Visual Collection from the Control’s constructor. It has the loaded event, which only sets the focus on the Textbox. The markup of the Autocomplete looks like the sample below: A simple CANVAS. Two controls – A Combo box and a Textbox make up the control collection in it. The Autocomplete control consists of a Canvas. So let’s see read on to see how it works.
#Autoprompt for windows code
The source code is also attached at the end of the article.
The Autocomplete control is a reusable user control. It is not restricted to access and can be used with any relational database. NOTE: This article uses the Northwind access database to show an example of Employee search. XAML, through its rich user interface and substantially flexible UI model can implement intuitive things like Autocomplete with ease. The article targets the creating of a standalone autocomplete library (pure XAML) that can be clubbed into any Windows Presentation Foundation (WPF) application and used with minimal efforts.Īt the point of writing this article, there are no equivalents in the market that deliver the real-time or cached Autocomplete functionality to data controls.
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