本文实例讲述了C#实现简单的井字游戏。分享给大家供大家参考。具体如下：

/* * Created using: SharpDevelop * Created by: Tony Misner * Date: 1/2/2007 * Time: 2:34 PM * */ using System; using System.Collections.Generic; using System.Drawing; using System.Windows.Forms; namespace TicTacToe { /// <summary> /// This is a basic one player versus computer game of TicTacToe /// </summary> public partial class frmMain { string playerTurn = "0"; string playerSymbol = "X"; string computerSymbol = "O"; int playCounter = 0; [STAThread] public static void Main(string[] args) { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new frmMain()); } public frmMain() { InitializeComponent(); } void Label1Click(object sender, System.EventArgs e) { bool playerDone = false; string labelText = label1.Text; if (playerClick(labelText) == true) { label1.Text = playerSymbol; playerDone = true; } else { return ; } if (checkWin() == true) { resetGame(); } else { computerGo(); if (checkWin() == true) { resetGame(); } } } void Label2Click(object sender, System.EventArgs e) { bool playerDone = false; string labelText = label2.Text; if (playerClick(labelText) == true) { label2.Text = playerSymbol; playerDone = true; } else { return ; } if (checkWin() == true) { resetGame(); } else { computerGo(); if (checkWin() == true) { resetGame(); } } } void Label3Click(object sender, System.EventArgs e) { bool playerDone = false; string labelText = label3.Text; if (playerClick(labelText) == true) { label3.Text = playerSymbol; playerDone = true; } else { return ; } if (checkWin() == true) { resetGame(); } else { computerGo(); if (checkWin() == true) { resetGame(); } } } void Label4Click(object sender, System.EventArgs e) { bool playerDone = false; string labelText = label4.Text; if (playerClick(labelText) == true) { label4.Text = playerSymbol; playerDone = true; } else { return ; } if (checkWin() == true) { resetGame(); } else { computerGo(); if (checkWin() == true) { resetGame(); } } } void Label5Click(object sender, System.EventArgs e) { bool playerDone = false; string labelText = label5.Text; if (playerClick(labelText) == true) { label5.Text = playerSymbol; playerDone = true; } else { return ; } if (checkWin() == true) { resetGame(); } else { computerGo(); if (checkWin() == true) { resetGame(); } } } void Label6Click(object sender, System.EventArgs e) { bool playerDone = false; string labelText = label6.Text; if (playerClick(labelText) == true) { label6.Text = playerSymbol; playerDone = true; } else { return ; } if (checkWin() == true) { resetGame(); } else { computerGo(); if (checkWin() == true) { resetGame(); } } } void Label7Click(object sender, System.EventArgs e) { bool playerDone = false; string labelText = label7.Text; if (playerClick(labelText) == true) { label7.Text = playerSymbol; playerDone = true; } else { return ; } if (checkWin() == true) { resetGame(); } else { computerGo(); if (checkWin() == true) { resetGame(); } } } void Label8Click(object sender, System.EventArgs e) { bool playerDone = false; string labelText = label8.Text; if (playerClick(labelText) == true) { label8.Text = playerSymbol; playerDone = true; } else { return ; } if (checkWin() == true) { resetGame(); } else { computerGo(); if (checkWin() == true) { resetGame(); } } } void Label9Click(object sender, System.EventArgs e) { bool playerDone = false; string labelText = label9.Text; if (playerClick(labelText) == true) { label9.Text = playerSymbol; playerDone = true; } else { return ; } if (checkWin() == true) { resetGame(); } else { computerGo(); if (checkWin() == true) { resetGame(); } } } bool playerClick(string labelText) { if (playerTurn == "1" && labelText == "" && playCounter < 4) { playerTurn = "2"; lblTurn.Text = "Player 2 Turn"; playCounter++; return true; } else if (playCounter == 4) { toolStripTotal.Text = ((Convert.ToInt32(toolStripTotal.Text)) + 1).ToString(); toolStripDraw.Text = ((Convert.ToInt32(toolStripDraw.Text)) + 1).ToString(); MessageBox.Show("Draw","Game Over", MessageBoxButtons.OK, MessageBoxIcon.Stop); resetGame(); } return false; } bool checkWin() { bool win = false; if (label1.Text == label2.Text && label2.Text == label3.Text && label1.Text != "") { win = true; } else if (label4.Text == label5.Text && label5.Text == label6.Text && label4.Text != "") { win = true; } else if (label7.Text == label8.Text && label8.Text == label9.Text && label7.Text != "") { win = true; } else if (label1.Text == label4.Text && label4.Text == label7.Text && label1.Text != "") { win = true; } else if (label2.Text == label5.Text && label5.Text == label8.Text && label2.Text != "") { win = true; } else if (label3.Text == label6.Text && label6.Text == label9.Text && label3.Text != "") { win = true; } else if (label1.Text == label5.Text && label5.Text == label9.Text && label1.Text != "") { win = true; } else if (label3.Text == label5.Text && label5.Text == label7.Text && label3.Text != "") { win = true; } if (win == true) { toolStripTotal.Text = ((Convert.ToInt32(toolStripTotal.Text)) + 1).ToString(); if (playerTurn == "1") { toolStripLost.Text = ((Convert.ToInt32(toolStripLost.Text)) + 1).ToString(); MessageBox.Show("Player 2 has won!","Game Over", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); return win = true; } else { toolStripWon.Text = ((Convert.ToInt32(toolStripWon.Text)) + 1).ToString(); MessageBox.Show("Player 1 has won!","Game Over", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); return win = true; } } return win; } void resetGame() { label1.Text = ""; label2.Text = ""; label3.Text = ""; label4.Text = ""; label5.Text = ""; label6.Text = ""; label7.Text = ""; label8.Text = ""; label9.Text = ""; playerTurn = "1"; playCounter = 0; lblTurn.Text = "Player 1 Turn"; } void computerGo() { bool computerDone = false; computerDone = computerGoForWin(); if (computerDone == false) { computerDone = computerGoForBlock(); if (computerDone == false) { computerDone = computerGoRandom(); } } playerTurn = "1"; lblTurn.Text = "Player 1 Turn"; } bool computerGoForWin() { bool computerDone = false; if (label1.Text == computerSymbol && label2.Text == computerSymbol && label3.Text == "") { label3.Text = computerSymbol; return computerDone = true; } else if (label1.Text == computerSymbol && label3.Text == computerSymbol && label2.Text == "") { label2.Text = computerSymbol; return computerDone = true; } else if (label2.Text == computerSymbol && label3.Text == computerSymbol && label1.Text == "") { label1.Text = computerSymbol; return computerDone = true; } else if (label4.Text == computerSymbol && label5.Text == computerSymbol && label6.Text == "") { label6.Text = computerSymbol; return computerDone = true; } else if (label4.Text == computerSymbol && label6.Text == computerSymbol && label5.Text == "") { label5.Text = computerSymbol; return computerDone = true; } else if (label5.Text == computerSymbol && label6.Text == computerSymbol && label4.Text == "") { label4.Text = computerSymbol; return computerDone = true; } else if (label7.Text == computerSymbol && label8.Text == computerSymbol && label9.Text == "") { label9.Text = computerSymbol; return computerDone = true; } else if (label7.Text == computerSymbol && label9.Text == computerSymbol && label8.Text == "") { label8.Text = computerSymbol; return computerDone = true; } else if (label8.Text == computerSymbol && label9.Text == computerSymbol && label7.Text == "") { label7.Text = computerSymbol; return computerDone = true; } else if (label1.Text == computerSymbol && label4.Text == computerSymbol && label7.Text == "") { label7.Text = computerSymbol; return computerDone = true; } else if (label1.Text == computerSymbol && label7.Text == computerSymbol && label4.Text == "") { label4.Text = computerSymbol; return computerDone = true; } else if (label4.Text == computerSymbol && label7.Text == computerSymbol && label1.Text == "") { label1.Text = computerSymbol; return computerDone = true; } else if (label2.Text == computerSymbol && label5.Text == computerSymbol && label8.Text == "") { label8.Text = computerSymbol; return computerDone = true; } else if (label2.Text == computerSymbol && label8.Text == computerSymbol && label5.Text == "") { label5.Text = computerSymbol; return computerDone = true; } else if (label5.Text == computerSymbol && label8.Text == computerSymbol && label2.Text == "") { label2.Text = computerSymbol; return computerDone = true; } else if (label3.Text == computerSymbol && label6.Text == computerSymbol && label9.Text == "") { label9.Text = computerSymbol; return computerDone = true; } else if (label3.Text == computerSymbol && label9.Text == computerSymbol && label6.Text == "") { label6.Text = computerSymbol; return computerDone = true; } else if (label6.Text == computerSymbol && label9.Text == computerSymbol && label3.Text == "") { label3.Text = computerSymbol; return computerDone = true; } else if (label1.Text == computerSymbol && label5.Text == computerSymbol && label9.Text == "") { label9.Text = computerSymbol; return computerDone = true; } else if (label5.Text == computerSymbol && label9.Text == computerSymbol && label1.Text == "") { label1.Text = computerSymbol; return computerDone = true; } else if (label1.Text == computerSymbol && label9.Text == computerSymbol && label5.Text == "") { label5.Text = computerSymbol; return computerDone = true; } else if (label3.Text == computerSymbol && label5.Text == computerSymbol && label7.Text == "") { label7.Text = computerSymbol; return computerDone = true; } else if (label3.Text == computerSymbol && label7.Text == computerSymbol && label5.Text == "") { label5.Text = computerSymbol; return computerDone = true; } else if (label5.Text == computerSymbol && label7.Text == computerSymbol && label3.Text == "") { label3.Text = computerSymbol; return computerDone = true; } return computerDone = false; } bool computerGoForBlock() { bool computerDone = false; if (label1.Text == playerSymbol && label2.Text == playerSymbol && label3.Text == "") { label3.Text = computerSymbol; return computerDone = true; } else if (label1.Text == playerSymbol && label3.Text == playerSymbol && label2.Text == "") { label2.Text = computerSymbol; return computerDone = true; } else if (label2.Text == playerSymbol && label3.Text == playerSymbol && label1.Text == "") { label1.Text = computerSymbol; return computerDone = true; } else if (label4.Text == playerSymbol && label5.Text == playerSymbol && label6.Text == "") { label6.Text = computerSymbol; return computerDone = true; } else if (label4.Text == playerSymbol && label6.Text == playerSymbol && label5.Text == "") { label5.Text = computerSymbol; return computerDone = true; } else if (label5.Text == playerSymbol && label6.Text == playerSymbol && label4.Text == "") { label4.Text = computerSymbol; return computerDone = true; } else if (label7.Text == playerSymbol && label8.Text == playerSymbol && label9.Text == "") { label9.Text = computerSymbol; return computerDone = true; } else if (label7.Text == playerSymbol && label9.Text == playerSymbol && label8.Text == "") { label8.Text = computerSymbol; return computerDone = true; } else if (label8.Text == playerSymbol && label9.Text == playerSymbol && label7.Text == "") { label7.Text = computerSymbol; return computerDone = true; } else if (label1.Text == playerSymbol && label4.Text == playerSymbol && label7.Text == "") { label7.Text = computerSymbol; return computerDone = true; } else if (label1.Text == playerSymbol && label7.Text == playerSymbol && label4.Text == "") { label4.Text = computerSymbol; return computerDone = true; } else if (label4.Text == playerSymbol && label7.Text == playerSymbol && label1.Text == "") { label1.Text = computerSymbol; return computerDone = true; } else if (label2.Text == playerSymbol && label5.Text == playerSymbol && label8.Text == "") { label8.Text = computerSymbol; return computerDone = true; } else if (label2.Text == playerSymbol && label8.Text == playerSymbol && label5.Text == "") { label5.Text = computerSymbol; return computerDone = true; } else if (label5.Text == playerSymbol && label8.Text == playerSymbol && label2.Text == "") { label2.Text = computerSymbol; return computerDone = true; } else if (label3.Text == playerSymbol && label6.Text == playerSymbol && label9.Text == "") { label9.Text = computerSymbol; return computerDone = true; } else if (label3.Text == playerSymbol && label9.Text == playerSymbol && label6.Text == "") { label6.Text = computerSymbol; return computerDone = true; } else if (label6.Text == playerSymbol && label9.Text == playerSymbol && label3.Text == "") { label3.Text = computerSymbol; return computerDone = true; } else if (label1.Text == playerSymbol && label5.Text == playerSymbol && label9.Text == "") { label9.Text = computerSymbol; return computerDone = true; } else if (label5.Text == playerSymbol && label9.Text == playerSymbol && label1.Text == "") { label1.Text = computerSymbol; return computerDone = true; } else if (label1.Text == playerSymbol && label9.Text == playerSymbol && label5.Text == "") { label5.Text = computerSymbol; return computerDone = true; } else if (label3.Text == playerSymbol && label5.Text == playerSymbol && label7.Text == "") { label7.Text = computerSymbol; return computerDone = true; } else if (label3.Text == playerSymbol && label7.Text == playerSymbol && label5.Text == "") { label5.Text = computerSymbol; return computerDone = true; } else if (label5.Text == playerSymbol && label7.Text == playerSymbol && label3.Text == "") { label3.Text = computerSymbol; return computerDone = true; } return computerDone = false; } bool computerGoRandom() { bool computerDone = false; Random random = new Random(); do { int position = random.Next(1,10); switch(position) { case 1: if (label1.Text == "") { label1.Text = computerSymbol; return computerDone = true; } break; case 2: if (label2.Text == "") { label2.Text = computerSymbol; return computerDone = true; } break; case 3: if (label3.Text == "") { label3.Text = computerSymbol; return computerDone = true; } break; case 4: if (label4.Text == "") { label4.Text = computerSymbol; return computerDone = true; } break; case 5: if (label5.Text == "") { label5.Text = computerSymbol; return computerDone = true; } break; case 6: if (label6.Text == "") { label6.Text = computerSymbol; return computerDone = true; } break; case 7: if (label7.Text == "") { label7.Text = computerSymbol; return computerDone = true; } break; case 8: if (label8.Text == "") { label8.Text = computerSymbol; return computerDone = true; } break; case 9: if (label9.Text == "") { label9.Text = computerSymbol; return computerDone = true; } break; } }while (computerDone == false); return computerDone = false; } void BtnExitClick(object sender, System.EventArgs e) { if (MessageBox.Show("Are you sure you want to exit",MessageBoxButtons.YesNo,MessageBoxIcon.Question) == DialogResult.Yes) { Application.Exit(); } } void ExitToolStripMenuItemClick(object sender, System.EventArgs e) { BtnExitClick(sender,e); } void BtnNewGameClick(object sender, System.EventArgs e) { if (MessageBox.Show("Are you sure you want to restart",MessageBoxButtons.YesNo,MessageBoxIcon.Question) == DialogResult.Yes) { toolStripTotal.Text = ((Convert.ToInt32(toolStripTotal.Text)) + 1).ToString(); toolStripDraw.Text = ((Convert.ToInt32(toolStripDraw.Text)) + 1).ToString(); resetGame(); } } void NewGameToolStripMenuItemClick(object sender, System.EventArgs e) { BtnNewGameClick(sender, e); } void AboutToolStripMenuItemClick(object sender, System.EventArgs e) { frmAbout about = new frmAbout(); about.ShowDialog(); } } }

希望本文所述对大家的C#程序设计有所帮助。