Im using VB 2010. I have a StudentsDatagriview on my form.
When a user clicks the Columns Header to change the sort of data the StudentsDataGridView_CellClick event also fires.
In the StudentsDataGridView_CellClick event, I have lots of code to be done and so I just want them to be done when the user clicks the cell, not column header. Do you have any ideas?
You may use StudentsDataGridView_CellContentClick event, pal.
Related
I'm new to Visual Basic, I have scoured the net to look for the event handler for the combo box click event but I cannot locate it. I am trying to make an event happens if a certain index is selected with the combo box1 then another combo box2 will populate the selected the index.
i have looked at links like these but it does not explain how or what the person did to access the _ click event VB6 Combo box events
In the code window for the form, select the desired control from the left drop down, then the event you want from the list of all events in the right drop down:
It will create the procedure for you and make it the active one. This is the same as VB.NET assuming you have the selectors on.
I haven't been using VB6 for ages, but i think what you need is covered here: http://www.vb6.us/tutorials/visual-basic-combo-box-tutorial
I cannot recall having to do anything special when using click events in VB6 at all.
In the first combobox click event, you should be able to have an if statement checking if a certain item is selected using .ListIndex and if so, populate the other.
My WPF application uses the Telerik RadGridView control on a few of its screens. I have a requirement that says that whenever the user clicks on a row in the RadGridView, I'm supposed to switch to another screen and display detail information about that row. I hooked up a handler to the SelectionChanged event and this works, except that nothing happens if the user clicks on the selected row a second time. This makes sense, as the selected row isn't being changed.
How can I detect a second click on the same row and have the second screen displayed?
Tony
You could just attach a handler to the MouseUp event on the GridView. Check if there are any selected cells and respond from there. This will fire even if there is already a selection.
The MouseDown event will fire on the mouse click, but before the gridview updates the selction, mouse up should fire when the selection has already been adjusted
You can also attach a handler to each individual cell in code-behind as follows
(this.GridView as RadGridView).AddHandler(
GridViewCell.MouseUpEvent,
new EventHandler<Telerik.Windows.RadRoutedEventArgs>(this.OnMouseUp));
I think you may try to achieve this through the MouseLeftButtonDown event or PreviewMouseLeftButtonDown event.
I am using EditorGridPanel with cellEditor which acts nearly like Excel. We implemented Arrow Keys to move among rows and
columns. We do row validation when user moves from one row to another (specifically in rowdeselect event) and then save the
record. There is some issues are:
For the last row of the grid, rowdeselect event does not fire, as we do not have any other control after the grid.
rowdeselect event fires if we move from row to row using Tab, Enter & Arrow keys. But when user clicks on another row using mouse - events do not come in correct sequence, so focus moves to the new row, but earlier row not saved. Currently we solved this by calling stopEditing at the beginning of rowdeselect event.
We would like to know how we can solve these two issues and whether there are more robust ways to handle automatic grid saving.
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1 ) First of all the event is not firing on the blur of the whole grid and not just the last row. try changing a row and clicking anywhere on the screen but the grid and you will see that no validation takes place (which means your rowdselect does not fire).
You should try and add a blue event to the whole grid that runs your validation scripts.
2) As far as I have checked the event is fired even on another row click so please explain exactly what you mean...
ps
I have viewed only this page in your application:
I am a WPF novice.
I have created a form containing a combo box with which to choose a multi-field key value(populated from an XML data file).
I have also created a second WPF form which is available to display all field values from the record associated with the multi-field key value chosen from the first form.
I need to be able to click a button which will cause the second form to be displayed, with all fields filled in which are associated with the chosen key field values.
How do I go about writing such an event trigger using C#?
couple of steps (this is not really MVVM, BTW) ...
first, add a click handler to your button
second, in the click handler code, instantiate your new form
third, set the data context, etc for the new form
forth, show the new form by calling .Show()
in your xaml add a click handler to the button in question....
<Button Click="myClickHandler"/>
in visual studio, you can right click the text in the click="" and choose to navigate to the handler and visual studio will generate the code for it for you.
in your click handler, in code behind, do something like this....
public void myClickHandler(object sender,EventArgs)
{
MySecondForm form = new MySecondForm();
form.DataContext = theDataContextIWantToSet;
form.Show();
}
I have a problem regarding combobox dropdown. Once a dropdown is opened, if I want to move focus to other control (say a textbox), I need to click twice because on first click, the combo dropdown is closed and then on second click, the textbox gets focus. How should I fix this? Please help.
You could listen to the DropDownList.SelectedIndexChanged event, and in the event handler set focus to the next control, either by setting TextBox.Focus(), or by calling System.Windows.Forms.Control.SelectNextControl()
I think this would be 'non standard' behaviour for what its worth. Its quite normal to expect the user to tab or select the next control after using a drop down.
Edit: Sorry, in a WPF ComboBox the equivalent event is SelectionChanged, but on reflection you'd be better using OnDropDownClosed. This would mean you only move the focus specifically after using the drop down rather than just whenever the value changes.