I have an application that has a datagridview in it obviously enough, and I add data to it programatically like so:
dataGridView1.Rows.Add(string[]);
Before I add any objects to the dataGridView I can edit the cells by double clicking, hitting enter or f2. After data has been added into the rows however, I can no longer edit any of the values. I have tried toggling the "Read Only" attribute from true to false, and also tried to mess with:
dataGridview1.EditMode ....
I don't know how to make the edit mode work properly, but on all previous keystrokes it just highlights the next row in the list.
How can I enable the user to edit the data in the data grid view once the rows have been added ?
Here are a list of tutorials on ways to accomplish this here:
http://www.codeproject.com/Questions/433279/edit-delete-update-cancel-in-gridview-asp-net
I would start with these.
Related
Recenlty I was searching for option that allow me to had "excel like" filtering in my app that use DataGridView.
So I found something like Advanced DataGridView (https://github.com/davidegironi/advanceddatagridview)
Almost everything is working fine, but I had 2 issues with it:
In the datagirdview I have a column that is checkbox. For each row is allowing user to checking rows that needs to be imported to order in our ERP. But if user select some on checkboxes and next want to filtered list all checkboxes will be in uncheck state. How can I made it working?
In default datagridview column sorting were working fine, after switching to Advanced DataGridView, sorting stoped working but filtering is working fine. How to made both of them working?
I populate DataTable with SQL query and put DataTable in DataGridView.
Thanks #JyothishBhaskaran, yours comment helped me with checkbox issue.
Meanwhile I found solution for last checked box changed to unchecked status. I had to call method datagridview.endedit() on cell click.
But sorting still isn't working at all.
I'm working with a XamDataGrid which is bound to a DataTable. When I type in data in the rows and I hit save (to save my data back to the database), it never saves the last row entered. I'm guessing because I need to tab out of the cell that I'm currently entering data in and that it will only move the text to the DataTable upon edit end. Is there a way to copy data to the DataTable as the user enters it so they don't have to tab out to force the edit end or is there a better way? Thanks!
I would add this as comment but am unable to. Its hard to say without more information but have you tried adding UpdateSourceTrigger=PropertyChanged?
"{Binding Path=Something, UpdateSourceTrigger=PropertyChanged}"
The grid should update its source if it loses focus which may not be happening especially if your save button is in a toolbar that doesn't take focus. If that is the case, you can force the grid to end editing and commit the record by calling ExecuteCommand on the XamDataGrid and passing in the DataPresenterCommands.EndEditModeAndCommitRecord command.
I only want 1 row to display in a DataGridView, so I want to somehow hide the checkbox that appears in the column header.
This checkbox is intended to select all the checkboxes, which I don't want to allow users to do.
I'm trying to avoid hiding the column headers and disguising some labels as if they were headers.
Note: I already have the code to uncheck all the other checkboxes when a user clicks on a different one.
Update: I left out that I populated the data from a data source. The "Include" column was not attached to the data source, but added from the data source wizard.
After some advanced experimentation (i.e. fooling around), I learned that naming a field/column "Selected" in the data source will not only cause it to be automatically included in the data grid view as a checkbox, but the header will not have a checkbox and behaves as desired.
Finagling my way to success ...
I am new to the wonderful world of asp.net gridviews. As of now, my gridview would have several rows each with a edit and update button. When I click edit, the editable cells turn into textboxes and can be successfully updated. However, if I am in edit mode in one row, and I click an update button in another row, an error will fire.
So my question is, how could I validate that the current row finished editing? Ive been searching google and I understand how to make field templates, assign a control, and can validate a certain cell. But I am not sure of a way to force someone to finish editing before causing that error. Thanks in advance!
From comments:
Why do you provide an update button when the row is not in edit mode?
You could set AutoGenerateEditButton to true. Then update + cancel buttons are shown when edit was clicked.
In my grid I had following line of code which disabled user's manual resizing:
dgvTruckAvail.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.AllCells;
Now I needed to set column height in code and it didn't work (see DataGridView setting row height doesn't work)
I figured that it was this line of code that caused non-sizing issue. However, now I need to figure out how to
Size rows in code
and
Prevent user sizing rows themselves
Any pointers?
Set:
dgvTruckAvail.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.None;
dgvTruckAvail.AllowUserToResizeRows = false;
This will disable row autosizing and manual row resizing. To set the row height you can use the Height and MinimumHeight properties of the RowTemplate.
Setting row size is a real challenge. Check how many gripes and responses there are on the web. I've found that sometimes one way works and other times it no longer works.
Do this:
Place a DataGridView on your form.
Edit and add several columns. It doesn't matter what they are because you'll discard this DGV in a moment.
Go into this DataGridView's properties and edit RowTemplate/Height to something small or large (only so you can see it working). Add a line of code in your method to set XXX.RowCount to something like 12 just to populate this test DataGridView. Run your code to verify the row height has changed.
Open the XXX.Designer.cs code. Expand the "Windows Form Designer generated code" and look for code that applies to what you just did with DataGridView. Copy it all into the method where you are trying to adjust/set row height. Comment out all of your code. Line by line, modify the self-generated code to use your object's name. Test repeatedly for any failure and isolate it at that time.
Now go back and delete this test DataGridView object.
In the properties window set:
AllowUserToResizeRows = False
This works for me:
1. Open .Designer.cs (of form containing the gridview)
2. Back to gridview design and edit any property you want
3. Both tab will show * as of being modified
4. Done
I guest the modified status does not touch .Designer.cs file, so our modification in designer does not apply.