帮忙解释代码 几句而已

[moonwrite]

Framework.WebControl.AddJsDefaultButton(new TextBox[] { this.tbProductSearch }, this.ibSearch1); //ibSerach1 是 ImageButton
程序集 类 方法

public static void AddJsDefaultButton(object[] controls, ImageButton btn)
{
for (int i = 0; i < controls.Length; i++)
{
((System.Web.UI.WebControls.WebControl) controls[i]).Attributes.Add("onkeydown", "javascript:if(event.which || event.keyCode){if ((event.which == 13) || (event.keyCode == 13)) {document.getElementById('" + btn.ClientID + "').click();return false;}} else {return true}; ");
}
}


这个实现了什么效果
还有键盘每个键对应的值是多少 哪里有表

[accomp]

enter键的ASCII是13

keycode 8 = BackSpace BackSpace
keycode 9 = Tab Tab
keycode 12 = Clear
keycode 13 = Enter
keycode 16 = Shift_L
keycode 17 = Control_L
keycode 18 = Alt_L
keycode 19 = Pause
keycode 20 = Caps_Lock
keycode 27 = Escape Escape
keycode 32 = space space
keycode 33 = Prior
keycode 34 = Next
keycode 35 = End
keycode 36 = Home
keycode 37 = Left
keycode 38 = Up
keycode 39 = Right
keycode 40 = Down
keycode 41 = Select
keycode 42 = Print
keycode 43 = Execute
keycode 45 = Insert
keycode 46 = Delete
keycode 47 = Help
keycode 48 = 0 equal braceright
keycode 49 = 1 exclam onesuperior
keycode 50 = 2 quotedbl twosuperior
keycode 51 = 3 section threesuperior
keycode 52 = 4 dollar
keycode 53 = 5 percent
keycode 54 = 6 ampersand
keycode 55 = 7 slash braceleft
keycode 56 = 8 parenleft bracketleft
keycode 57 = 9 parenright bracketright
keycode 65 = a A
keycode 66 = b B
keycode 67 = c C
keycode 68 = d D
keycode 69 = e E EuroSign
keycode 70 = f F
keycode 71 = g G
keycode 72 = h H
keycode 73 = i I
keycode 74 = j J
keycode 75 = k K
keycode 76 = l L
keycode 77 = m M mu
keycode 78 = n N
keycode 79 = o O
keycode 80 = p P
keycode 81 = q Q at
keycode 82 = r R
keycode 83 = s S
keycode 84 = t T
keycode 85 = u U
keycode 86 = v V
keycode 87 = w W
keycode 88 = x X
keycode 89 = y Y
keycode 90 = z Z
keycode 96 = KP_0 KP_0
keycode 97 = KP_1 KP_1
keycode 98 = KP_2 KP_2
keycode 99 = KP_3 KP_3
keycode 100 = KP_4 KP_4
keycode 101 = KP_5 KP_5
keycode 102 = KP_6 KP_6
keycode 103 = KP_7 KP_7
keycode 104 = KP_8 KP_8
keycode 105 = KP_9 KP_9
keycode 106 = KP_Multiply KP_Multiply
keycode 107 = KP_Add KP_Add

keycode 108 = KP_Separator KP_Separator
keycode 109 = KP_Subtract KP_Subtract
keycode 110 = KP_Decimal KP_Decimal
keycode 111 = KP_Divide KP_Divide
keycode 112 = F1
keycode 113 = F2
keycode 114 = F3
keycode 115 = F4
keycode 116 = F5
keycode 117 = F6
keycode 118 = F7
keycode 119 = F8
keycode 120 = F9
keycode 121 = F10
keycode 122 = F11
keycode 123 = F12
keycode 124 = F13
keycode 125 = F14
keycode 126 = F15
keycode 127 = F16
keycode 128 = F17
keycode 129 = F18
keycode 130 = F19
keycode 131 = F20
keycode 132 = F21
keycode 133 = F22
keycode 134 = F23
keycode 135 = F24
keycode 136 = Num_Lock
keycode 137 = Scroll_Lock
keycode 187 = acute grave
keycode 188 = comma semicolon
keycode 189 = minus underscore
keycode 190 = period colon
keycode 192 = numbersign apostrophe
keycode 210 = plusminus hyphen macron
keycode 211 =
keycode 212 = copyright registered
keycode 213 = guillemotleft guillemotright
keycode 214 = masculine ordfeminine
keycode 215 = ae AE
keycode 216 = cent yen
keycode 217 = questiondown exclamdown
keycode 218 = onequarter onehalf threequarters
keycode 220 = less greater bar
keycode 221 = plus asterisk asciitilde
keycode 227 = multiply division

keycode 228 = acircumflex Acircumflex
keycode 229 = ecircumflex Ecircumflex
keycode 230 = icircumflex Icircumflex
keycode 231 = ocircumflex Ocircumflex
keycode 232 = ucircumflex Ucircumflex
keycode 233 = ntilde Ntilde
keycode 234 = yacute Yacute
keycode 235 = oslash Ooblique
keycode 236 = aring Aring
keycode 237 = ccedilla Ccedilla
keycode 238 = thorn THORN
keycode 239 = eth ETH
keycode 240 = diaeresis cedilla currency
keycode 241 = agrave Agrave atilde Atilde
keycode 242 = egrave Egrave
keycode 243 = igrave Igrave
keycode 244 = ograve Ograve otilde Otilde
keycode 245 = ugrave Ugrave
keycode 246 = adiaeresis Adiaeresis
keycode 247 = ediaeresis Ediaeresis
keycode 248 = idiaeresis Idiaeresis
keycode 249 = odiaeresis Odiaeresis
keycode 250 = udiaeresis Udiaeresis
keycode 251 = ssharp question backslash
keycode 252 = asciicircum degree
keycode 253 = 3 sterling
keycode 254 = Mode_switch

[phper2008]

实现效果就是按回车的时候 触发ImageButton btn的单击事件

表:
描述\r
0x1 鼠标左键\r
0x2 鼠标右键\r
0x3 CANCEL 键\r
0x4 鼠标中键\r
0x8 BACKSPACE 键\r
0x9 TAB 键\r
0xC CLEAR 键\r
0xD ENTER 键\r
0x10 SHIFT 键\r
0x11 CTRL 键\r
0x12 MENU 键\r
0x13 PAUSE 键\r
0x14 CAPS LOCK 键\r
0x1B ESC 键\r
0x20 SPACEBAR 键\r
0x21 PAGE UP 键\r
0x22 PAGE DOWN 键\r
0x23 END 键\r
0x24 HOME 键\r
0x25 LEFT ARROW 键\r
0x26 UP ARROW 键\r
0x27 RIGHT ARROW 键\r
0x28 DOWN ARROW 键\r
0x29 SELECT 键\r
0x2A PRINT SCREEN 键\r
0x2B EXECUTE 键\r
0x2C SNAPSHOT 键\r
0x2D INSERT 键\r
0x2E DELETE 键\r
0x2F HELP 键\r
0x90 NUM LOCK 键\r
A 至 Z 键与 A – Z 字母的 ASCII 码相同：
值 描述\r
65 A 键\r
66 B 键\r
67 C 键\r
68 D 键\r
69 E 键\r
70 F 键\r
71 G 键\r
72 H 键\r
73 I 键\r
74 J 键\r
75 K 键\r
76 L 键\r
77 M 键\r
78 N 键\r
79 O 键\r
80 P 键\r
81 Q 键\r
82 R 键\r
83 S 键\r
84 T 键\r
85 U 键\r
86 V 键\r
87 W 键\r
88 X 键\r
89 Y 键\r
90 Z 键\r
0 至 9 键与数字 0 – 9 的 ASCII 码相同：
值 描述\r
48 0 键\r
49 1 键\r
50 2 键\r
51 3 键\r
52 4 键\r
53 5 键\r
54 6 键\r
55 7 键\r
56 8 键\r
57 9 键\r
下列常数代表数字键盘上的键：
值 描述\r
0x60 0 键\r
0x61 1 键\r
0x62 2 键\r
0x63 3 键\r
0x64 4 键\r
0x65 5 键\r
0x66 6 键\r
0x67 7 键\r
0x68 8 键\r
0x69 9 键\r
0x6A MULTIPLICATION SIGN (*) 键\r
0x6B PLUS SIGN (+) 键\r
0x6C ENTER 键\r
0x6D MINUS SIGN (–) 键\r
0x6E DECIMAL POINT (.) 键\r
0x6F DIVISION SIGN (/) 键\r
下列常数代表功能键：
值 描述\r
0x70 F1 键\r
0x71 F2 键\r
0x72 F3 键\r
0x73 F4 键\r
0x74 F5 键\r
0x75 F6 键\r
0x76 F7 键\r
0x77 F8 键\r
0x78 F9 键\r
0x79 F10 键\r
0x7A F11 键\r
0x7B F12 键\r
0x7C F13 键\r
0x7D F14 键\r
0x7E F15 键\r
0x7F F16 键\r

[lala_1901]

百度搜一下键值，一般没人去记忆这东西

[accomp]

就是如果回车，触发btn 的click事件

[phper2008]

给的是二进制的!转换下就可以了!

[w161134025]

就是如果回车，触发btn 的click事件