I simply added message box and when i run the form the message box keeps popping up until all the rows have finish loaded n gridview.
My initial plan was to show a message that you have edited the cell. So does cell change event happens when the gridview is being loaded and extracting the rows from the database or when you change the value of cell.
How to stop the message box from popping out countless of times and whether or not i am using the wrong event?? Below is exactly what i did. I am also using datasource to get my records from the database
Private Sub grdDataGrid_CellValueChanged(sender As Object, e As DataGridViewCellEventArgs) Handles grdDataGrid.CellValueChanged
MsgBox("You have edited the follwing cell")
End Sub
To stop the messageBox from popping out countless times:
Private Sub grdDataGrid_DataBindingComplete(sender As Object, e As System.Windows.Forms.DataGridViewBindingCompleteEventArgs) Handles grdDataGrid.DataBindingComplete
MessageBox("your message")
End Sub
When you use the _CellValueChanged event- all of the cells that are being loaded with data are being changed when you render the gridView. So each cell is firing the _CellValueChanged event
Related
I've got a small problem of having a button and a combo box. In this situation the combobox holds values from 1 to 10. The enter button allows the user to select how many dynamic objects they want to produce however my program crashes every time I press enter after selecting another value and pressing enter again. So is there any form of validation I can have for my button to stop users from pressing enter twice.
Use a flag to supress user events.
Clear it again if need be at the appropriate time.
Private Enter_Locked As Boolean
Private Sub btn_Click(sender As Object, e As EventArgs) Handles btn.Click
If Enter_Locked Then Exit Sub
Enter_Locked = True
'do as you will here
End Sub
I'm having a problem with DataGridView event handler CellContentClick sometimes it does not work.
here is my code:
Private Sub DGV_CellContentClick(sender As Object, e As DataGridViewCellEventArgs) Handles DGV.CellContentClick
ownDataSelected()
End Sub
Please help me. Thankyou
Use DataGridView.CellClick
This event occurs when any part of a cell is clicked, including
borders and padding. It also occurs when the user presses and releases
the SPACE key while a button cell or check box cell has focus, and
will occur twice for these cell types if the cell is clicked while
pressing the SPACE key.
DataGridView.CellContentClick triggers only on the text of the cell being click and the blank space not count.
I'm having this issue that should be pretty easy to solve but I just can't seem to figure it out or find an answer yet. I have the following code:
Public Sub NotifyThatValuesChanged(sender As Object, e As EventArgs)
APIUserForm_MAIN.OnSecurityInputValuesChanged()
APIUserForm_MAIN.MessageSender.TabControl.SelectTab(0)
End Sub
So, I'm rasing events when values within txtboxes change, and one of the things I want to do is change tab focus when these values change, which it is doing...but....I don't want the cursor (or focus) to change to the selected tab. I want the cursor/focus to stay where it is at while this event happens, and for the tab selected on this other control to change from (1) to (0).
Thanks for the help!!!!
I don't think it's 100% possible. Try putting the focus back into the textbox:
Public Sub NotifyThatValuesChanged(sender As Object, e As EventArgs)
APIUserForm_MAIN.OnSecurityInputValuesChanged()
APIUserForm_MAIN.MessageSender.TabControl.SelectTab(0)
TextBox1.Select()
End Sub
If multiple controls are calling this method, you can use the sender parameter:
DirectCast(sender, Control).Select()
This is a VB.NET, Winforms App, Using EF. On my form I have a datagridview, a databinding source, and a bindingNavigator... I can edit the cells of the datagridview but when I click save changes the value is only saved until I reload the form.?.? Looking at the database table directly I can see the value never actually changes.. Below is the sub that handles the click..
Private Sub UnitBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles UnitBindingNavigatorSaveItem.Click
UnitDataGridView.CommitEdit(DataGridViewDataErrorContexts.CurrentCellChange)
db.SaveChanges()
End Sub
From what I have read this seems like all I need to have but obviously its wrong somehow..
I made a work around for it for the time being... I simply use the CellEndEdit event and get the row info from that. Next I get the value of the column that holds the id and update the database from there. Seems like a long way around but is the only way I can get it to write any data at the moment...
When we click on drop down combobox control in our windows form, it shows the list automatically.
But when we press tab and navigate to that control from keyboard it doesn't shows the list automatically. So in other to show the list automatically on receiving focus what should be done?
Set the DroppedDown property of the combobox equal to true.
Private Sub myComboBox_GotFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles myComboBox.GotFocus
myComboBox.DroppedDown= true
End Sub
I would like to mention on thing here.
I used Enter event to show Drop down list with DroppedDown=true,
But When I type something in text area of combobox and if i leave the area to next control, entered text is lost.
My combobox is databound.