[Webinar] Streamline your web hosting managementRegister Today

x
?
Solved

WPF combobox selectionchanged event only on mouse click?

Posted on 2010-11-22
3
Medium Priority
?
9,203 Views
Last Modified: 2012-05-10
Hi Guys,

I have a ComboBox in my WPF xaml with some predefined ComboBoxItems. The ComboBox has the IsEditable enabled, so you can type in your username or select one from the predefined dropdown list of existing users on this system.

When the user is selected I would like the focus to be transferred on the password field, but I'm having some difficulties with it since the combobox fires the selectionchanged event if i type in the first letter of a matching item in the ComboBoxItem or if I try to cycle through the predefined values using the up / down arrow keys. It's understandable that it does that since the selection of it has been changed, but I would like to know how could I filter my SelectionChanged event to pass the focus to my password input only if the user clicks on the item form the ComboBox, not if the item is autosuggested or cycled through with arrow keys. A good example of the user input field that I am trying to achieve is the Skype "Skype Name" component in the Skype Sign In screen.

WPF xaml code:
<ComboBox  IsEditable="True" IsReadOnly="False" HorizontalAlignment="Left"  Name="UserInput"  Grid.ColumnSpan="2" " StaysOpenOnEdit="True" SelectionChanged="UserInput_SelectionChanged">
                            <ComboBoxItem Content="test" />
                            <ComboBoxItem Content="abc" />
                            <ComboBoxItem Content="xyz" />
</ComboBox>

Open in new window


C# Code:
private void UserInput_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            
            PasswordInput.Focus();
        }

Open in new window


I've also tried the preview on key event returning the e.handled which worked fine, but it disabled the functionality of manually inputting a new value to the ComboBox:
private void UserInput_PreviewKeyDown(object sender, System.Windows.Input.KeyEventArgs e)
        {
            e.Handled = true;
        }

Open in new window


Thank you for your help,
0
Comment
Question by:xNejX
3 Comments
 
LVL 20

Expert Comment

by:Daniel Van Der Werken
ID: 34187569
I don't have WPF on my system, but I think I know what you're talking about and might offer a suggestion.

What I would do is set the OnMouseDown event for the combo box itself and then set a class-wide static bool variable to true if the mouse button was pushed while the cursor was over the combo box.

Then, in the OnSelectionChanged event, I'd check to see if the mouse had been previously pushed down.  If so, then I'd do the move to the password box.

Make sure to reset the bool value to false as appropriate.  You might have to tinker around with it.  Anyway, that's what I'd do. There might be a more elegant solution.
0
 
LVL 29

Accepted Solution

by:
Kumaraswamy R earned 2000 total points
ID: 34194360
0
 

Author Closing Comment

by:xNejX
ID: 34196724
just perfect :)
0

Featured Post

Never miss a deadline with monday.com

The revolutionary project management tool is here!   Plan visually with a single glance and make sure your projects get done.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
High user turnover can cause old/redundant user data to consume valuable space. UserResourceCleanup was developed to address this by automatically deleting user folders when the user account is deleted.
Kernel Data Recovery is a renowned Data Recovery solution provider which offers wide range of softwares for both enterprise and home users with its cost-effective solutions. Let's have a quick overview of the journey and data recovery tools range he…
Stellar Phoenix SQL Database Repair software easily fixes the suspect mode issue of SQL Server database. It is a simple process to bring the database from suspect mode to normal mode. Check out the video and fix the SQL database suspect mode problem.
Suggested Courses
Course of the Month8 days, 15 hours left to enroll

590 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question