Manually prevent new rows in WPF DataGrid

Question

Good day. How programmatically prevent the creation of new rows in data grid? For example:

private void SomeDataGridEvent()
   if (MyBoolConditionIsTrue())
      Prevent_Grid_Row_Creation_Logic
   else
     //Do Nothing. The new row is created

Edit1: Note: CanUserDeleteRows must be TRUE. The user CAN add rows, but only if some condition is true.

Answer 1

You can do it like that:

AddingNewItem="DataGrid_AddingNewItem"

private void DataGrid_AddingNewItem(object sender, AddingNewItemEventArgs e)
{
    if (sender is DataGrid dg)
    {
        if (MyBoolConditionIsTrue())
        {
            dg.Items.Remove(e.NewItem);
        }
        else
        {
            //Do Nothing. The new row is created
        }
    }
}

Or

RowEditEnding="DataGrid_RowEditEnding"

private void DataGrid_RowEditEnding(object sender, DataGridRowEditEndingEventArgs e)
{
    if (MyBoolConditionIsTrue())
    {
        e.Cancel = true;
    }
    else
    {
        //Do Nothing. The new row is created
    }
}

Answer 2

Set CanUserAddRows property of the dataGrid to "False"