using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace SudokuGridFormA
{
	public class SudokuGridForm : System.Windows.Forms.Form
	{
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.Panel [,] panel = new Panel[3,3];
		private System.Windows.Forms.Button [,] GridBtn = new Button[9,9];
		private int TABINDEXNUM = 0;
		

		public SudokuGridForm()
		{
			InitializeComponent();
		}

		private int TABINDEX()
		{
			TABINDEXNUM++;
			return(TABINDEXNUM);
		}

		private void AddPanel(int panelNumX, int panelNumY, int x1, int x2, int y1, int y2)
		{
			this.panel[panelNumX,panelNumY].BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;

			for(int y=y1; y<=y2; y++)
				for(int x=x1; x<=x2; x++)
				{
					this.GridBtn[x,y] = new System.Windows.Forms.Button();
					this.panel[panelNumX,panelNumY].Controls.Add(this.GridBtn[x,y]);
				}

			this.panel[panelNumX,panelNumY].Location = new System.Drawing.Point(24+(panelNumX*96),32+(panelNumY*96));
			this.panel[panelNumX,panelNumY].Name = "panel" + panelNumX.ToString()+panelNumY.ToString();
			this.panel[panelNumX,panelNumY].Size = new System.Drawing.Size(96, 96);
			this.panel[panelNumX,panelNumY].TabIndex = TABINDEX();

			for(int y=y1; y<=y2; y++)
				for(int x=x1; x<=x2; x++)
				{
					this.GridBtn[x,y].Location = new System.Drawing.Point(0+(x*32), 0+(y*32));
					string BtnName = "GridBtn"+panelNumX.ToString()+panelNumY.ToString()+x.ToString()+y.ToString();
					this.GridBtn[x,y].Name = BtnName;
					this.GridBtn[x,y].Size = new System.Drawing.Size(32, 32);
					this.GridBtn[x,y].Text = panelNumX.ToString()+panelNumY.ToString()+x.ToString()+y.ToString();
					this.GridBtn[x,y].TabIndex = TABINDEX();
				}
		}

		private void InitializeComponent()
		{
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.groupBox1.SuspendLayout();
			this.SuspendLayout();

			for(int y = 0; y<3; y++)
				for(int x = 0; x<3; x++)
				{
					this.panel[x,y] = new System.Windows.Forms.Panel();
					this.panel[x,y].SuspendLayout();
				}

			for(int y = 0; y<3; y++)
				for(int x = 0; x<3; x++)
				this.groupBox1.Controls.Add(this.panel[x,y]);
			
			this.groupBox1.Location = new System.Drawing.Point(16, 24);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(336, 344);
			this.groupBox1.TabIndex = TABINDEX();
			this.groupBox1.TabStop = false;

			for(int y = 0; y<3; y++)
				for(int x = 0; x<3; x++)
					AddPanel(x,y,x*3,2+(x*3),y*3,2+(y*3));			
			
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(368, 382);
			this.Controls.Add(this.groupBox1);
			this.Name = "SudokuGridForm";
			this.Text = "SudokuGridForm";
			this.groupBox1.ResumeLayout(false);
			for(int y = 0; y<3; y++)
				for(int x = 0; x<3; x++)
					this.panel[x,y].ResumeLayout(false);
			this.ResumeLayout(false);
		}
	}
}

Originally Posted by durgaprasad

mr.gandalf irequest u to write a program in c that allows the user to play tic tac toe with computer