Event similar to textchanged of textbox inside datagridview

Question

I have a datagridview in which I am looking for a event to capture in which, when the values of a cell is modifying by the user (not modified or editing has been done) , should works Just like textchanged event for a textbox .

Answer 1

There are many events to handle or methods to override when something is changing or changed in DataGridView, and the right answer really depens on the your actual requirements.

• Do you want to customize the Enter key? Then you may want to override ProcessDialogKey.
• Do you want to customize the arrow keys? Then you may want to override ProcessDataGridViewKey
• Do you want to handle TextChanged event of the text box editing control? Then continue reading the answer!
• Do you want ...? Then let me know what exactly is your requirement and I'll share some idea.

Speaking of TextChanged event of TextBox, I guess you are interested in handling same exact event of the DataGridView while editing a text in text box of a cell. There's an event EditingControlShowing, that raises right before editing the cell when the editing control is gonna display. You can get the editing control and check if it's a TextBox (it's actually a DataGridViewTextBoxEditingControl which is derived from TextBox), then just handle its TextChanged event. For example:

private dgv1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
    var txt = e.Control as TextBox;
    if(txt!=null)
    {
        txt.TextChanged -= txt_TextChanged;
        txt.TextChanged += txt_TextChanged;
    } 
}
private txt_TextChanged(object sender, EventArgs e)
{
    //Do whatever you want. 
}

Answer 2

Hi @ankit goel , Welcome to Microsoft Q&A.

In fact, as far as I know there is no such event.

First when we enter a datagridviewtexbox and input characters: only happens

1. Enter the control event:

• Enter Event: Fired when the DataGridViewTextBox gets focus and becomes the active control.
• GotFocus event: Fired when the DataGridViewTextBox gets focus.

2. Keyboard input event:

• PreviewKeyDown** event: Triggered before pressing a keyboard key, it can detect whether a special key (such as arrow keys, enter key) is pressed.
• KeyDown event: Triggered when a keyboard key is pressed, at this time, the information of the keyboard key can be obtained.
• KeyPress event: Triggered when the keyboard key representing the character is pressed, at this time, the information of the character input can be obtained.

I can think of two alternatives:

• One is the one I gave you earlier: do a commit on the enter press event and get back to editing.
• Another way: judge directly in the keydown event, if a cell is in the editing state, perform a certain operation. (You may need to do too much judgment with this method; you may need to do judgment for most keys.)

Best Regards,

Jiale

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