C# 键盘响应事件及键值对照表

键盘响应事件总结


键盘响应事件是在用户按下某个键后触发的事件,可以是任意操作,但不是任意键都可以被捕获的

原型:public event KeyPressEventHandler KeyPress
MSDN说明:键事件按以下顺序发生:
1.KeyDown
2.KeyPress
3.KeyUp
KeyPress 事件不能由非字符键引发;但是非字符键能够引发 KeyDown 和 KeyUp事件。
使用 KeyChar 属性采样运行时的键击,以及使用或修改常用键击的一个子集。
若要仅在窗体级别处理键盘事件而不允许其他控件接收键盘事件,请将窗体的 KeyPress 事件处理方法中的KeyPressEventArgs.Handled 属性设置为 true。MSDN


下面的代码示例使用 KeyPress事件来禁止向控件输入字符。

 // Boolean flag used to determine when a character other than a number is entered.
        private bool nonNumberEntered = false;

        // Handle the KeyDown event to determine the type of character entered into the control.
        private void textBox1_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
        {
            // Initialize the flag to false.
            nonNumberEntered = false;

            // Determine whether the keystroke is a number from the top of the keyboard.
            if (e.KeyCode < Keys.D0 || e.KeyCode > Keys.D9)
            {
                // Determine whether the keystroke is a number from the keypad.
                if (e.KeyCode < Keys.NumPad0 || e.KeyCode > Keys.NumPad9)
                {
                    // Determine whether the keystroke is a backspace.
                    if(e.KeyCode != Keys.Back)
                    {
                        // A non-numerical keystroke was pressed.
                        // Set the flag to true and evaluate in KeyPress event.
                        nonNumberEntered = true;
                    }
                }
            }
            //If shift key was pressed, it's not a number.
            if (Control.ModifierKeys == Keys.Shift) {
                nonNumberEntered = true;
            }
        }

        // This event occurs after the KeyDown event and can be used to prevent
        // characters from entering the control.
        private void textBox1_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
        {
            // Check for the flag being set in the KeyDown event.
            if (nonNumberEntered == true)
            {
                // Stop the character from being entered into the control since it is non-numerical.
                e.Handled = true;
            }
        }

 


键值对照表

虚拟键值表
虚拟键 十六进制值 十进制值 相应键盘或鼠标键
VK_LBUTTON 1 1 鼠标左键
VK_RBUTTON 2 2 鼠标右键
VK_CANCEL 3 3 Ctrl-Break键
VK_MBUTTON 4 4 鼠标中键
VK_BACK 8 8 Backspace键
VK_TAB 9 9 Tab键
VK_CLEAR 0C 12 Clear键
VK_RETURN 0D 13 Enter键
VK_SHIFT 10 16 Shift键
VK_CONTROL 11 17 Ctrl键
VK_MENU 12 18 Alt键
VK_PAUSE 13 19 Pause键
VK_CAPITAL 14 20 Caps Lock键
VK_ESCAPE 1B 27 Esc键
VK_SPACE 20 32 Space键
VK_PRIOR 21 33 Page Up键
VK_NEXT 22 34 Page Down键
VK_END 23 35 End键
VK_HOME 24 36 Home键
VK_LEFT 25 37 ←键
VK_UP 26 38 ↑键
VK_RIGHT 27 39 →键
VK_DOWN 28 40 ↓键
VK_SELECT 29 41 Select键
VK_PRINT 2A 42 Print键
VK_EXECUTE 2B 43 Execute键
VK_SNAPSHOT 2C 44 Print Screen键
VK_INSERT 2D 45 Ins键
VK_DELETE 2E 46 Del键
VK_HELP 2F 47 Help键
VK_0 30 48 0键
VK_1 31 49 1键
VK_2 32 50 2键
VK_3 33 51 3键
VK_4 34 52 4键
VK_5 35 53 5键
VK_6 36 54 6键
VK_7 37 55 7键
VK_8 38 56 8键
VK_9 39 57 9键
VK_A 41 65 A键
VK_B 42 66 B键
VK_C 43 67 C键
VK_D 44 68 D键
VK_E 45 69 E键
VK_F 46 70 F键
VK_G 47 71 G键
VK_H 48 72 H键
VK_I 49 73 I键
VK_J 4A 74 J键
VK_K 4B 75 K键
VK_L 4C 76 L键
VK_M 4D 77 M键
VK_N 4E 78 N键
VK_O 4F 79 O键
VK_P 50 80 P键
VK_Q 51 81 Q键
VK_R 52 82 R键
VK_S 53 83 S键
VK_T 54 84 T键
VK_U 55 85 U键
VK_V 56 86 V键
VK_W 57 87 W键
VK_X 58 88 X键
VK_Y 59 89 Y键
VK_Z 5A 90 Z键
VK_LWIN 5B 91 左Windows键
VK_RWIN 5C 92 右Windows键
VK_APPS 5D 93 应用程序键
VK_SLEEP 5F 95 休眠键
VK_NUMPAD0 60 96 小数字键盘0键
VK_NUMPAD1 61 97 小数字键盘1键
VK_NUMPAD2 62 98 小数字键盘2键
VK_NUMPAD3 63 99 小数字键盘3键
VK_NUMPAD4 64 100 小数字键盘4键
VK_NUMPAD5 65 101 小数字键盘5键
VK_NUMPAD6 66 102 小数字键盘6键
VK_NUMPAD7 67 103 小数字键盘7键
VK_NUMPAD8 68 104 小数字键盘8键
VK_NUMPAD9 69 105 小数字键盘9键
VK_MULTIPLY 6A 106 乘号键
VK_ADD 6B 107 加号键
VK_SEPARATOR 6C 108 分割键
VK_SUBSTRACT 6D 109 减号键
VK_DECIMAL 6E 110 小数点键
VK_DIVIDE 6F 111 除号键
VK_F1 70 12 F1键
VK_F2 71 113 F2键
VK_F3 72 114 F3键
VK_F4 73 115 F4键
VK_F5 74 116 F5键
VK_F6 75 117 F6键
VK_F7 76 118 F7键
VK_F8 77 119 F8键
VK_F9 78 120 F9键
VK_F10 79 121 F10键
VK_F11 7A 122 F11键
VK_F12 7B 123 F12键
VK_F13 7C 124 F13键
VK_F14 7D 125 F14键
VK_F15 7E 126 F15键
VK_F16 7F 127 F16键
VK_F17 80 128 F17键
VK_F18 81 129 F18键
VK_F19 82 130 F19键
VK_F20 83 131 F20键
VK_F21 84 132 F21键
VK_F22 85 133 F22键
VK_F23 86 134 F23键
VK_F24 87 135 F24键
VK_NUMLOCK 90 144 Num Lock键
VK_SCROLL 91 45 Scroll Lock键
VK_LSHIFT A0 160 左Shift键
VK_RSHIFT A1 161 右Shift键
VK_LCONTROL A2 162 左Ctrl键
VK_RCONTROL A3 163 右Ctrl键
VK_LMENU A4 164 左Alt键
VK_RMENU A5 165 右Alt键

PS:以上表格的导入如果使用Makedown语法显然不太合适,这里我使用表格自动转换HTML语法的网站,非常方便,链接如下:在线HTML格式转换

 

出处:https://blog.csdn.net/u012391923/article/details/52920316

参考:https://www.cnblogs.com/swtool/p/6860760.html

posted on 2019-02-22 09:58  jack_Meng  阅读(3651)  评论(0编辑  收藏  举报

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