I couldnt make good question i know,but it is what i could.When user write something in textbox there appear symbol flashing which shows place which will be inserted character.It can be changed by left and right arrow buttons.I want to raise event when it is changed or something that i can get index of this "symbol".is there any property at textBox for it?
The "symbol" is called a caret. When it's position changes, the SelectionChanged event is fired, and you can programmatically retrieve the position using the CaretIndex property on the TextBox.
You can find more information about this here.
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i am creating UserControl of DatagridView
and i am looking for the event of the field leave
i mean on lost focus of any of the fields
as example:
you see it on edit mode(on first row at LastName), i wanna use event everytime i lost focus after editing any field
which events i can use?
i cant use datagridview.click cause it only if i lost focus on another column but i wanna to if i click on the "second on" button that still do lost focus
edit moreover i need In addition 1 more event
on error, i mean if i put in int field i write letter i wanna it show me error
You're looking for DataGridView.CellEndEdit event
I'm trying to make an application where I have this combobox that automatically opens and closes on mouse enter and mouse leave events respectively and then gets the value of the combobox before i leave it.
I already have the dropdown behavior as given by someone who posted it online. But now I need to get the value of my combobox item without clicking the mouse. I've tried selectedvalue or selecteditem but all seems to require mouse clicking. Is there any way of getting the value of the combobox where the mouse points to before I leave/close the combobox?
You can use labels for the combobox items.
Add 'MouseMove' event and in the event take the label text.
Here is an example how to implement very closely connected behavior: ComboBox MouseLeave MouseEnter.
In windows forms, when I tab out of a text box, the bound data source value is updated. I'd like to capture the events right before and right after the data source changed. I think the OnLeave event is what I want for the before event. In the debugger, I'm not seeing the data source value changed. But, what event can I key off of for the after event?
I don't think there is an event that does exactly what you're asking, the closest I think you're going to get is to use the DataBindings and find your specific Binding and the you can catch the Parse event. But I believe this event fires before the data is pushed back to the source, so it's not much better than the LostFocus event.
The default event for TextBox DataBindings is DataSourceUpdateMode.OnValidation. When you tab out of the TextBox, the following events will fire:
Leave
Validating
(data source gets updated)
Validated
The Validating event has a CancelEventArgs parameter that allows you to cancel the leave attempt for the TextBox (the focus will remain in the TextBox).
If you use DataSourceUpdateMode.OnPropertyChanged, it will update the data source with every keystroke or text change.
I have a feature request that when a ComboBox is 'clicked into' that it clears the text so that the user can start entering in new data to search. Does anyone know of a way to hook into this? The 'click' event is raised on when the text is clicked as well as when the drop down arrow is also clicked (which opens up the drop down with items). I only want it to happen on the first, not the latter.
Right now I'm capturing the click event and filtering on the DroppedDown property like so:
if(!comboBox.DroppedDown)
{
// clear selection
}
This seems to work most of the time, but bugs out frequently as well... so its not 100%.
If anyone knows of a proper way to do this I would appreciate!
Don't handle the click event. For one thing, it won't fire if the user tabs the focus into the control. Use the Enter event which fires when the control receives focus. And rather than clearing text you should just select it all which will give the best of both worlds:
1) The user can start entering new text which will clear any old text or
2) tab past the control and leave the contained text as it was.
If you always remove the previous text you may anger users.
Try the "Enter" event. It happens when a control gains focus on the form.
Basic question, but I can't figure it out...I have a label with an accelerator key set (e.g. "&Add") and I want to give focus to a textbox when that shortcut, Alt+A, is pressed. What event does this correspond to? I tried the click event but that didn't do anything...
edit: found my own answer - it sets focus to the control that is next in the tab order. so I guess my revised question is, is there a way to catch this so I can have it select all the text in the textbox?
Handle GotFocus event of the TextBox