Develop Reference

How to trigger a button event while checked status change for checkbox

I want to generate button click event while checking checkbox in data grid view. How it this possible?
I put my perform click event in dataGridView1_CellContentClick.
When I click on any row first time button event could not perform, however when I click other row then it will perform a button click event for first row click. How to solve this issue?

If you want to know when anywhere in the cell is clicked, then its best to use CellClick or probably CellMouseDown.
If you are not after whitespace in the row or column then its best to use CellContentClick (for columns like checkbox, button, link etc)..

DataGridView row_onclick event?

I have a DataGridView and I should handle an event when a row (or any cell of a row) is clicked, yet I can't find anything like this. Is there a way to do this other than having each individual cell a handler method?

You may try the SelectionChanged event of Datagridview.
You have to set the SelectionMode property to FullRowSelect and check any change in the above event.
If necessary, you can get the rowindex using Datagridview.CurrentCell.Rowindex too.

how to get the rows if textbox value has changed inside gridview

After editing the textbox values inside this gridview, i need to get the rows (only edited rows) in button click event (button placed outside the gridview).

Add event listener on the gridview to grab the selected items value on change, and add them to an array. Loop through to use the data.

Best way to fetch gridview row on row databound event?

Hi I was just wondering what is the best way to fetch gridview data using row databound event of gridview. I am previously used to Eval but read its not recommended as it uses reflection.

What do you mean "Fetch" the data, by the time the the RowDataBound event has triggered, there already has to be a row of data, that is why the event has executed. If you want to access and mapipulate the data then it is in e.Row.DataItem.
Edit
To answer your comment, using Eval in the markup and putting code in the RowDataBound event handler and accessing e.Row.DataItem tend to be used under different cirumstances. If all you want to do is take the data and bind it to the property of a control then using Eval() (or Bind() for that matter) is fine. However if you want to do something more complex then you might need to do it in the RowDataBound event handler. For exam-ple you might have a grid of customer accounts and ballances. For customers where thir ballances are overdue you might want to turn the row red to highlight the fact that thier accounts are overdue. You could not do that using Eval or Bind in the markup so you would check e.Row.DataItem in the RowDataBound event handler and then decide whether to change the colour of the row.

When are the auto-generated columns in a gridview added?

I'd like to tinker with the auto-generated columns in a gridview a bit. What event would I want to override to modify them just after they are generated but before the control is rendered?

Check out this link for more information on Customizing the Auto-Generated Columns of a GridView Control:
http://msdn.microsoft.com/en-us/library/cc903950(VS.95).aspx
The particular event you are looking for would be the AutoGeneratingColumn event
More information on the AutoGeneratingColumn event

The columns are added to the GridView when the DataBind() method is called

Those two links are for the Datagrid not Gridview.