Using textboxes in a class

Question

So for a coding project I need to create an Othello game. Now I'm trying to do most of it on my own. Basically trying to re-learn C#. I'm just trying to create a board. Now I am using textboxes and B represents black and W represents a white piece.

My problem is trying to create my board class.

My code here:

private TextBox[,] textboxes;
public board()
{
    textboxes = new TextBox[,] { 
       {textBox1,textBox2,textBox3,textBox4,textBox5,textBox6,textBox7,textBox8},
       {textBox11,textBox12,textBox13,textBox14,textBox15,textBox16,textBox17,textBox18},
       {textBox21,textBox22,textBox23,textBox24,textBox25,textBox26,textBox27,textBox28},
       {textBox31,textBox32,textBox33,textBox34,textBox35,textBox36,textBox37,textBox38},
       {textBox41,textBox42,textBox43,textBox44,textBox45,textBox46,textBox47,textBox48},
       {textBox51,textBox52,textBox53,textBox54,textBox55,textBox56,textBox57,textBox58},
       {textBox61,textBox62,textBox63,textBox64,textBox65,textBox66,textBox67,textBox68},
       {textBox71,textBox72,textBox73,textBox74,textBox75,textBox76,textBox77,textBox78}};
}

This creates an 8x8 grid of boxes. I have this in a class named board. It won't let me use these textboxes here.

I get this error: Error 1 Cannot access a non-static member of outer type 'WindowsFormsApplication1.Form1' via nested type 'WindowsFormsApplication1.Form1.board'

Any thoughts or ideas how to make this easier then I am doing it?

BeemerGuy · Accepted Answer · 2010-11-18 02:47:48Z

1

Obviously writing out the text boxes like that is not a good choice =)

The choices are:

Create a PictureBox and handle its Paint event and draw on it using .NET's powerful Graphics object; you get very cool methods such as DrawRectangle() and DrawEllipse(). Example snippet:
```
int GridHeight = 50, GridWidth = 50;
// draw the graph grid                
for (int i = 0; i < 8; i++)
    for (int j = 0; j < 8; j++)
        g.DrawRectangle(Pens.Black, i * GridWidth, j * GridHeight, GridWidth, GridHeight);
```
That way you can easily modify the size of the board at a higher level.

If you must go with text boxes, which might be easier to implement interaction with, you need to create them dynamically in the same nested-for manner above, though you create TextBoxes on the fly, such as:

for (int i = 0; i < 8; i++)
    for (int j = 0; j < 8; j++)
    {
        TextBox cell = new TextBox();
        cell.Top = i * GridHeight;
        cell.Left = j * GridWidth;
        cell.Click += new EventHandler(Cell_Click);
        AllCells.Add(cell);
    }

And handle the Cell_Click event accordingly.

edited Nov 18, 2010 at 2:47

answered Nov 18, 2010 at 2:38

BeemerGuy

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3 Comments

Lewis Cutter III Over a year ago

Is AllCells a list you defined? also is g in you first example one of those Graphics objects? Sorry, learning new things here.

BeemerGuy Over a year ago

@Lewis Cutter IIi; presumably, yes.

Lewis Cutter III Over a year ago

Would this list lok like List<TextBox> AllCell = new List<TextBox>();

Jason Li · Accepted Answer · 2010-11-18 02:44:30Z

1

I Don't think using textbox is a good idea. But I'm lack of this kind of experience. So.... I can only give you some procedural advice.

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    class Board
    {
        private TextBox[,] textboxes;

        public Board(Form1 form)
        {
            textboxes = new TextBox[,] 
            {
                {form.textBox1, form.textBox2, ....}
            };
        }
    }
}

answered Nov 18, 2010 at 2:44

Jason Li

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