Is it possible to handle event left row on grid View? I would like to make update in database after left row in grid view. When user enter data in text box in grid view he has to click save button.
I use grid on web page and I use .net 2.0
If by left row event you mean unselecting then you can react on selectedindexchanged event and check if selected indedx is -1
I can think of two ways to do it. You could wire up an event on the tab key or blur event for the last control of the grid row. This means they've gotten to the last input, it does validation to make sure all the other required boxes are filled, and then it posts back the update, or you could add a focus event to controls in all rows in the gridview and keep track of which row they're on in that focus event. If the row changes you fire an update for the last row index.
My preference is the second option.
*Edit: You could save yourself some trouble and use event bubbling by wiring up the focus on the table or table body and let the controls' focus event bubble up.
Related
I have a DataGrid with programmaticaly added rows (items) by adding an ItemSource.
I do not want the user to edit the cells so I set IsReadOnly = true;.
But I want them to click on cells and output which cell was clicked.
I was searching for a Clicked event and was surprised there is no such event for a DataGrid. I want a behaviour like buttons where it doesn't matter if it's clicked by the mouse, space bar, enter or whatever else the system accepts as a "Click".
So how can I achieve that?
Whatever is in the cell template (TextBlock, for instance) could be styled to handle the PreviewMouseUp event and pull the information you want from the control or bound object. The click event is specific to Button, TextBox and other controls that deal with mouse capture. Here is a link that discusses the dilemma you are facing: http://blog.scottlogic.com/2008/12/02/wpf-datagrid-detecting-clicked-cell-and-row.html. He provides examples on how to accomplish the task at hand.
In this datagrid if i select multiple rows and click on that wheel button, selection gets lost.
I want to maintain this selection on clicking that button.
How can this be done.
Datagrid selection changed gets fired before Button click event.
Not sure if this is supported.
Documentation on extended says:
InExtended mode, select multiple items by holding down the SHIFT key
to extend the selection from an anchor point or the CTRL key to
individually select additional items.
https://msdn.microsoft.com/en-us/library/system.windows.controls.datagridselectionmode(v=vs.110).aspx
Check here for a possible workaround: http://www.codeproject.com/Questions/582437/WPFplusDataGridpluswithplusSelectionMode-d-Mult
I want to disable the update event of the grid when the focus of the row is lost. So, after i added/edited a record and click on a previous record the grid should NOT update. Any ideas?
I believe, you want to make (all) grid rows unfocused and focus once the user clicks the grid. If yes, please refer:
Is it possible to set up the grid to have no focused row?
Baby steps rolling... I have a form with a data grid bound to a table. I have some textboxes on the form bound to the table[columns], so as I scroll the grid, the textboxes show corresponding data.
I go to an "Edit Mode" of the textboxes and change the content and hit a save button. The grid doesn't refresh the changed context until I physically click in the cell which forces a call to the tables OnChanging and OnChanged events...
How can I FORCE whatever event to "flush" the table at the end of my edit and have it refreshed in the datagridview.
Thanks
Have you tried calling the dataGridView's Invalidate method?
this.dataGridView1.Invalidate();
Are you using a BindingSource? If so, call its EndEdit method on the TextBox's Leave event.
I have a DataGridView control in a TabPage, and I listen for the SelectionChanged event. When the TabPage is selected, the DataGridView selects the first row and fires the SelectionChanged event. How can I stop it from automatically selecting a row?
I can think of two ways of working around this, If you know the event always fires, Have a bool flag that is set on the first selection, then only perform the rest of your SelectionChanged code.
The other way is to have a hidden control that is the first TabStop for the TabPage and hence is the first control to get focus (I say this without having tested any this of course, just my two cents).
Override the function "OnEnter" of the TabPage.
Call the function "ClearSelecton" of the DataGridView within this function.