Question

greetings, i need a replacement for TableLayoutPanelCellPosition. i have made this class:

public class GridUnit
{
    public GridUnit()
    {
        Column = 0;
        Row = 0;
    }

    public GridUnit(int column, int row)
    {
        Column = column;
        Row = row;
    }

    public int Column { get; set; }

    public int Row { get; set; }
}

private TableLayoutPanelCellPosition homeLastPositionFirst = new TableLayoutPanelCellPosition(0, 0);

private GridUnit homeLastPositionLast = new GridUnit();

and if i do:

homeLastPositionLast = homeLastPositionFirst

i get errors and this is expected. my question is what else do i need to implement so that i can do this?

thank you for your time and just for the record im new at this.

Answer 1

Since you want to maintain code portability, you will need to convert your GridUnit into TableLayoutPanelCellPosition when you want to use it. You could implement static methods to do the conversion for you.

static GridUnit ConvertToGridUnit(TableLayoutPanelCellPosition position)
{
    return new GridUnit(position.Column, position.Row;
}

static TableLayoutPanelCellPosition 
    ConvertToTableLayoutPanelCellPosition (GridUnit gridUnit)
{
    return new TableLayoutPanelCellPosition(gridUnit.Column, gridUnit.Row;
}

You would use the conversion methods like this:

GridUnit homeLastPositionLast = ConvertToGridUnit(homeLastPositionFirst);

Even better, you could turn the conversion methods into conversion operators:

public static explicit operator GridUnit(TableLayoutPanelCellPosition position)
{
    return new GridUnit(position.Column, position.Row;
}

public static explicit operator TableLayoutPanelCellPosition(GridUnit gridUnit)
{
    return new TableLayoutPanelCellPosition(gridUnit.Column, gridUnit.Row;
}

Then you can cast between GridUnit and TableLayoutPanelCellPosition:

GridUnit homeLastPositionLast = (GridUnit)homeLastPositionFirst;

If you wanted to allow free conversion between GridUnit and TableLayoutPanelCellPosition without explicit casting, you would change explicit into implicit in the converstion operator. Then you could do this:

GridUnit homeLastPositionLast = homeLastPositionFirst;