Character Handler in WPF

Heiko 1,236

Hi,

I would like to jump in a ListView (GridView) by entering letters to the entry that starts with these letters in the first column. Unfortunately, this does not already happen automatically. Therefore I wanted to implement it myself.

But I notice that neither the ListView nor the Window have a CharacterReceived event. The KeyUp handler is also inappropriate, since it only returns keys from an enumeration, but not letters of arbitrary scripts (Cyrillic, Arabic, etc.).

Now how can I implement this?

In UWP there is CoreWindow.GetForCurrentThread().CharacterReceived, what in WPF?

Emon Haque 3,176 Reputation points

2021-06-29T15:44:25.667+00:00

does protected override void On[Preview]TextInput work?
Heiko 1,236 Reputation points

2021-06-30T11:04:36.247+00:00

I now use TextSearch in the ListView. OnTextInput() returns the desired character in each case. I will probably use OnTextInput() in the TreeView.

Thank you.
Emon Haque 3,176 Reputation points

2021-07-01T00:56:15.79+00:00

If you work with large/moderate dataset/database, at some point you definitely will want to have functionalities provided by ICollectionView, have a look at that. For both columnar and hierarchical dataset you can use that with a ListBox. For tree like structure you'll have to provide a Group Style with expander and for columnar set a DataTemplate. It's nice built in filter, sort, grouping capabilities.
Heiko 1,236 Reputation points

2021-07-02T09:50:43.133+00:00

Thank you for this information. I will keep this in mind. Currently I just want to display a file list.

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Character Handler in WPF

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