c# - Multiple lines in a DataGridView cell

Question

Using C# Windows Forms;

I have a DataGridView with a number of cells. I would like to show digits (from 1-9) in the cell. The digits should be placed under each other in a 3x3 format.

I looked around, and only ended up with a rather complex custom implementation of a richtextbox cell.

Is there a way I can draw a custom rectangle and then implement this as backgroundimage of the cell or something? The cell need to be redrawn several times. So I can't just call the paint event I guess.

Note: The cell must not be edited by the user.

Answer 1

Im don't know if this will satisfy you, but you can use Environment.NewLine to create simple line break inside cell.

Example:

string nl = Environment.NewLine; // new line variable
string data = "1 2 3" + nl + "4 5 6" + nl + "7 8 9";

Added later:

As Adrian said in comments - you will need to:

1. set the WrapMode for the DataGridViewColumn to DataGridViewTriState.True

2. make sure you set a height for the row, or set the DataGridView's AutoSizeRowsMode to DataGridViewAutoSizeRowsMode.AllCells

If you don't want to edit that column - you can set DataGridView.Column.ReadOnly property to true.

Update: It took me a while to find this property with the above information. In VS C# 2017 the WrapMode property is located in the datagridview DefaultCellSytle dialog.