1. 首先将窗口属性KeyPreview设为true，如果属性对话框中找不到，就直接在代码里添加；2. 添加KeyPress / KeyDown事件：KeyPress 和KeyDown 、KeyPress之间的区别： 1）.KeyPress主要用来捕获数字(注意：包括Shift+数字的符号)、字母（注意：包括大小写）、小键盘等除了F1-12、SHIFT、Alt、Ctrl、Insert、Home、PgUp、Delete、End、PgDn、ScrollLock、Pause、NumLock、{菜单键}、{开始键}和方向键外的ANSI字符 KeyDown 和KeyUp 通常可以捕获键盘除了PrScrn所有按键(这里不讨论特殊键盘的特殊键） 2）.KeyPress 只能捕获单个字符 KeyDown 和KeyUp 可以捕获组合键。 3）.KeyPress 可以捕获单个字符的大小写 4）.KeyDown和KeyUp 对于单个字符捕获的KeyValue 都是一个值，也就是不能判断单个字符的大小写。 5）.KeyPress 不区分小键盘和主键盘的数字字符。 KeyDown 和KeyUp 区分小键盘和主键盘的数字字符。 6）.其中PrScrn 按键KeyPress、KeyDown和KeyUp 都不能捕获。KeyPress事件：private void Form1_KeyPress(object sender, KeyPressEventArgs e){ if(e.KeyChar== '1') { button1.PerformClick();// 执行按钮“1”的操作 e.Handled = true; }}KeyChar取值：
另外2个特殊ASCII码：回车=13，换行=10KeyDown事件：private void Form1_KeyDown(object sender, KeyEventArgs e){ Keys key = e.KeyCode; if (e.Control!=true)//如果没按Ctrl键return; switch (key) { case Keys.NumPad0: //按下小键盘0以后 break; case Keys.NumPad1: //按下小键盘1以后 break; case Keys.S: //按下S键以后 break; case Keys.Up: //按下向下键以后 break; }}KeyCode取值（java中应该也是一样的值）：keycode 8 = BackSpace BackSpacekeycode 9 = Tab Tabkeycode 12 = Clearkeycode 13 = Enterkeycode 16 = Shift_Lkeycode 17 = Control_Lkeycode 18 = Alt_Lkeycode 19 = Pausekeycode 20 = Caps_Lockkeycode 27 = Escape Escapekeycode 32 = space spacekeycode 33 = Priorkeycode 34 = Nextkeycode 35 = Endkeycode 36 = Homekeycode 37 = Leftkeycode 38 = Upkeycode 39 = Rightkeycode 40 = Downkeycode 41 = Selectkeycode 42 = Printkeycode 43 = Executekeycode 45 = Insertkeycode 46 = Deletekeycode 47 = Helpkeycode 48 = 0 equal bracerightkeycode 49 = 1 exclam onesuperiorkeycode 50 = 2 quotedbl twosuperiorkeycode 51 = 3 section threesuperiorkeycode 52 = 4 dollarkeycode 53 = 5 percentkeycode 54 = 6 ampersandkeycode 55 = 7 slash braceleftkeycode 56 = 8 parenleft bracketleftkeycode 57 = 9 parenright bracketrightkeycode 65 = a Akeycode 66 = b Bkeycode 67 = c Ckeycode 68 = d Dkeycode 69 = e E EuroSignkeycode 70 = f Fkeycode 71 = g Gkeycode 72 = h Hkeycode 73 = i Ikeycode 74 = j Jkeycode 75 = k Kkeycode 76 = l Lkeycode 77 = m M mukeycode 78 = n Nkeycode 79 = o Okeycode 80 = p Pkeycode 81 = q Q atkeycode 82 = r Rkeycode 83 = s Skeycode 84 = t Tkeycode 85 = u Ukeycode 86 = v Vkeycode 87 = w Wkeycode 88 = x Xkeycode 89 = y Ykeycode 90 = z Zkeycode 96 = KP_0 KP_0keycode 97 = KP_1 KP_1keycode 98 = KP_2 KP_2keycode 99 = KP_3 KP_3keycode 100 = KP_4 KP_4keycode 101 = KP_5 KP_5keycode 102 = KP_6 KP_6keycode 103 = KP_7 KP_7keycode 104 = KP_8 KP_8keycode 105 = KP_9 KP_9keycode 106 = KP_Multiply KP_Multiplykeycode 107 = KP_Add KP_Addkeycode 108 = KP_Separator KP_Separatorkeycode 109 = KP_Subtract KP_Subtractkeycode 110 = KP_Decimal KP_Decimalkeycode 111 = KP_Divide KP_Dividekeycode 112 = F1keycode 113 = F2keycode 114 = F3keycode 115 = F4keycode 116 = F5keycode 117 = F6keycode 118 = F7keycode 119 = F8keycode 120 = F9keycode 121 = F10keycode 122 = F11keycode 123 = F12keycode 124 = F13keycode 125 = F14keycode 126 = F15keycode 127 = F16keycode 128 = F17keycode 129 = F18keycode 130 = F19keycode 131 = F20keycode 132 = F21keycode 133 = F22keycode 134 = F23keycode 135 = F24keycode 136 = Num_Lockkeycode 137 = Scroll_Lockkeycode 187 = acute gravekeycode 188 = comma semicolonkeycode 189 = minus underscorekeycode 190 = period colonkeycode 192 = numbersign apostrophekeycode 210 = plusminus hyphen macronkeycode 211 =keycode 212 = copyright registeredkeycode 213 = guillemotleft guillemotrightkeycode 214 = masculine ordfemininekeycode 215 = ae AEkeycode 216 = cent yenkeycode 217 = questiondown exclamdownkeycode 218 = onequarter onehalf threequarterskeycode 220 = less greater barkeycode 221 = plus asterisk asciitildekeycode 227 = multiply divisionkeycode 228 = acircumflex Acircumflexkeycode 229 = ecircumflex Ecircumflexkeycode 230 = icircumflex Icircumflexkeycode 231 = ocircumflex Ocircumflexkeycode 232 = ucircumflex Ucircumflexkeycode 233 = ntilde Ntildekeycode 234 = yacute Yacutekeycode 235 = oslash Oobliquekeycode 236 = aring Aringkeycode 237 = ccedilla Ccedillakeycode 238 = thorn THORNkeycode 239 = eth ETHkeycode 240 = diaeresis cedilla currencykeycode 241 = agrave Agrave atilde Atildekeycode 242 = egrave Egravekeycode 243 = igrave Igravekeycode 244 = ograve Ograve otilde Otildekeycode 245 = ugrave Ugravekeycode 246 = adiaeresis Adiaeresiskeycode 247 = ediaeresis Ediaeresiskeycode 248 = idiaeresis Idiaeresiskeycode 249 = odiaeresis Odiaeresiskeycode 250 = udiaeresis Udiaeresiskeycode 251 = ssharp question backslashkeycode 252 = asciicircum degreekeycode 253 = 3 sterlingkeycode 254 = Mode_switch3. 如何获取键盘按钮的keyChar值（keyCode同理）：private void Form1_KeyPress(object sender, KeyPressEventArgs e) { char Key_Char = e.KeyChar;//判斷按鍵的 Keychar MessageBox.Show(((int)(Key_Char)).ToString());//轉成整數顯示 }
