DataGridView sends unnecessary event to screen readers on every cell change.

[TheQuinbox]

.NET version

9.1.00

Did it work in .NET Framework?

Not tested/verified

Did it work in any of the earlier releases of .NET Core or .NET 5+?

No response

Issue description

I have this simple Windows Forms app using DataGridView. Every time I press an arrow key to move to a different cell, using either NVDA or Narrator, after reading all of the correct information about the cell, the screen reader will say "edit", for seemingly no reason.

public class Form1 : Form {
	private DataGridView gridView;

	public Form1() {
		Text = "Periodic Table";
		ClientSize = new Size(1000, 600);
		gridView = new DataGridView {
			AllowUserToAddRows = false,
			AllowUserToDeleteRows = false,
			AllowUserToOrderColumns = false,
			AllowUserToResizeColumns = false,
			AllowUserToResizeRows = false,
			ColumnCount = 18,
			RowCount = 11,
			Dock = DockStyle.Fill,
			ReadOnly = true,
			RowHeadersVisible = true,
			ColumnHeadersVisible = true
		};
		Controls.Add(gridView);
	}

	[STAThread]
	public static void Main() {
		ApplicationConfiguration.Initialize();
		Application.Run(new Form1());
	}
}

Steps to reproduce

1. Run the demo app from above with a screen reader active.
2. Press the arrow keys to move around the grid.

[Zheng-Li01]

@TheQuinbox , this is not a real issue. for now, the keyboard tooltip is supported for the controls by default, so the Edit tooltip will be announced when using the arrow keys got though the cells as below screenshot. So you can disable the tooltip such as below code section.
ShowCellToolTips = false

[TheQuinbox]

Hi @Zheng-Li01,
You are indeed correct, adding this removed the unnecessary event being fired. What exactly is the purpose of it, though? As a screen reader user myself, I don't expect to hear "edit" when navigating around a grid that doesn't actually have any editable content in it.
Thanks!

[Zheng-Li01]

@TheQuinbox, thanks for your response. as below screenshot, sometimes the screen reader user wants to know which type of cell was used for now, who can get the cell's type info by using screen reader to announce the tooltip.

[TheQuinbox]

Hi @Zheng-Li01,
this is exactly my point. Sorry, I should've been clearer. My DataGridView is set to read-only. Why, then, is the tool tip "edit", even though the user is unable to edit any content, and furthermore, they can't even navigate the cells like edit fields because the arrow keys move around the grid.
Thanks,
Quin.

[LeafShi1]

@TheQuinbox @Tanya-Solyanik Referring to the display of the Textbox control, when the Textbox is read-only, adding the ReadOnly attribute to it, do you think this is reasonable?

[LeafShi1]

The tooltips of all controls will be read out automatically, which is controlled by the AnnounceText method of Tooltip itself

The reason why DataGridViewCell displays Tooltip is that the GetDefaultToolTipText method is overridden in DataGridViewTextBoxCell

@Tanya-Solyanik @TheQuinbox There are currently two solutions below. Which one do you think is more reasonable?

Solution1: we can disable the Tooltip of DataGridViewCell, so that no extra text will be read out.
The following is the pronunciation result of NVDA after disabling the ToolTip of DataGridViewTextBoxCell

Solution 2: when the Textbox is read-only, adding the ReadOnly attribute to it's ToolTip