I want to fire the textchanged event of textbox after the user enters text/data in the textbox in vb.net. But the event is getting fired as soon as the user enters the first word in the textbox.
is there any way I can solve this problem? I tried googling but didnt get satisfactory solution..
TextChanged Event is triggered when there is any change in the TextBox.
If you want to invoke something after user finishes up then try using LostFocus Event of the TextBox which will be triggered as user leaves the focus from textbox.
Related
I read this article about TextChanged property in Windows phone:
http://msdn.microsoft.com/en-us/library/ms742880(v=vs.110).aspx
I want to know if there is a property for TextBox so that I get notified when user put focus to that TextBox and then get notified when user clicks something else on screen to make the TextBox lost focus?
Basically, I have a multiple lines TextBox, which accept 'Enter'.
So I want to get notified when User changes the Text after he leaves the Text Box (not get notified every key the user enters in the TextBox).
Thank you.
There are GotFocus and LostFocus events on TextBox you looking for
What is the best way to deal with a combo box event? In other words, what is the best event handler to use for the case that the user makes a selection from the combo box? I am using a textchanged event, but it seems a bit sloppy. Is there a better way? By the way, my program that I am using it for is a unit converter that converts length.
The textchanged event fires whenever the text inside the combobox changes. every character added to the combobox triggers it, which makes it sloppy.
To avoid performance issues, use either Lostfocus (which fires if the control isn't selected anymore) or the SelectedValue /Selectedindex changed events.
To answer your other question, manipulate the keypress event.
Go to the combobox's keypress event, and type this:
e.handled = true
this will reject any input from user.
what I can do to execute Button.KeyPress event in vb ?
for example
Button.Click , should I press the button , so what about Button.KeyPress
Assuming you're talking about Runtime, in order to get the KeyPress event to fire, the Button needs to be first be selected, then press a (keyboard) button.
The KeyPress is normally used for things like a Textbox, it's not normally used with a Button
If you are looking for a way to force the Button.Click event, you can always call Me.Button1.PerformClick()
I am working in windows form and have a few textboxes on a form.
These textboxes from top to bottom are connected, so if the text changes in textbox1, then txtbox2 and txtbox3 have to comply, if something changes in textbox2 then 3 has to comply;... and so on ... not going to bore you.
Now I was looking for an alternative, more efficient way of calling the textchanged event on the textboxes so it doesn't do everything everytime, even if one charater has changed....
Something like focus off textbox event ... or some other alternative .
This would be in vb.net and windows form.
You can use the TextBox.LostFocus event inherited from Control.LostFocus.
This event is fired when the control looses focus, like Tab or clicked on another control.
TextBox1.LostFocus perhaps? Or enable validation on the controls.
Control focus event order:
http://msdn.microsoft.com/en-gb/library/system.windows.forms.control.lostfocus.aspx
CausesValidation:
http://msdn.microsoft.com/en-gb/library/system.windows.forms.control.causesvalidation.aspx
I have a functionality regarding the double click of ListBox which already has SelectedIndexChanged event.The same events in vb6 works fine,but when it comes to single click the SelectedIndexChanged Event is firing always when I click for Double Click also.
I have tried to use timer and prevent the SelectedIndexChanged event,but no use always firing the SelectedIndexChanged event.
The event sequence in Vb is different when compared to VB.NET.
The ListBox have two Event to Handle the Double Click
DoubleClick Event
MouseDoubleClick Event
msdn: Control.DoubleClick Event
Example for DoubleClick Event with items: C# Listbox Item Double Click Event
You can't have both MouseDoubleClick and SelectedIndexChanged. When SelectedIndexChanged is used it supersedes MouseDoubleClick. Try using one or the other.
To be more exact, when the control is empty then MouseDoubleClick is fired but as soon as an item is added then SelectedIndexChanged fires and not MouseDoubleClick.
Hope this helps.