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Change click behavior on DataGridView cell

Posted on 2010-11-10
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Last Modified: 2012-05-10
In a DataGridView, when the user wants to edit a text cell, it requires 3 clicks: one to select the cell, one to put it into edit mode (with whole cell highlighted) and one to remove highlighting and put the pointer at the clicked character.

I know how to add an event handler so that I can get the clicked cell. But what do I do next?
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Question by:BlearyEye
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by:mkobrin
ID: 34100499
I'm not sure if this the best option for you, but one way is to create a textbox dynamically on your click event, size it to the same size as the cell, populate it with the contents of the cell , and then position it exactly where the cell is, and on the leave event of the textbox, update the contents of the cell with the contents of the textbox, before hiding or disposing of the textbox. Be sure to handle a cancel option for the user.
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by:BlearyEye
ID: 34100731
My question was incomplete but mkobrin got the idea: I want to reduce this to a single click.

The textbox suggestion sounds complex and error-prone ...
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Expert Comment

by:kris_per
ID: 34101125

You need to sub-class DataGridView and handle the mouse down message for this. Code for OneClickEditDataGridView class is here =>
http://social.msdn.microsoft.com/Forums/en/winformsdatacontrols/thread/8004651f-80a4-4b36-bb56-1518aea66b73

Hope this helps.
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Assisted Solution

by:Zhaolai
Zhaolai earned 500 total points
ID: 34104916
In the CellClick event, add BeginEdit(), like this:

    Private Sub DataGridView1_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellClick
        DataGridView1.BeginEdit(False)
    End Sub

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BlearyEye earned 0 total points
ID: 34108250
Zhaolai: that reduces it to two mouse clicks (one to select & enter edit mode without selection and another to position the cursor). But it is a lot less confusing than the default.

I found this link on MSDN: http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.beginedit.aspx
That's a lot more complex than your proposal. Any thoughts on the difference?
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Author Closing Comment

by:BlearyEye
ID: 34195074
Zhaolai's solution pointed me in the right direction but it was incomplete and I came up with the correct reference after that.
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