If e.KeyChar Chr(8) And Not e.KeyChar Like "#" And Not e.KeyChar Like "[,.-]" Then e.KeyChar = ""求问这句话的意义,为什么这句话输了以后就能够输数字而不能输字符了呢?

If e.KeyChar Chr(8) And Not e.KeyChar Like # And Not e.KeyChar Like [,.-] Then e.KeyChar = 求问这句话的意义,为什么这句话输了以后就能够输数字而不能输字符了呢? C# 里面 e.KeyChar = 8 && char.IsDigit(e.KeyChar) e.KeyChar中的e是什么意思? e.KeyChar == ' ' || e.KeyChar == if (e.KeyChar == 13) 为什么是等于13?为什么是等于13? VB中Text1.text=text1.text+CStr(a(i))+ If i=4 then text1.text=text1.text+chr(13)+chr(10)VB中Text1.text=text1.text+CStr(a(i))+ If i=4 then text1.text=text1.text+chr(13)+chr(10)中1, 2,chr(13)+chr(10)是不是ASCII的代码, 为什么我的VB程序总是提示 下标越界了呢Private Sub Timer1_Timer()MSComm1.PortOpen = TrueReDim aa(3)If k1 = 0 Then MSComm1.Output = 1 + Chr(10) + Chr(13)If k1 = 1 Then MSComm1.Output = 2 + Chr(10) + Chr(13)If k1 = 2 Then MSComm1.Out m = space(0)c = ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzfor i = 1 to len(c)nc = asc(substr(c,i,1))if nc>64 and nc86m = m+chr(65+nc-87)ELSEm = m+chr(nc+4)ENDIF else IF nc>120m = m+chr(97+nc-121)ELSEm = m+chr(nc+2)ENDIF endifendfor wait w Excel 中IF函数的解释=IF(IF(($E$5+$E$8-SUM(H47:$H$49))0,0,IF(($E$5+$E$8-SUM(H47:$H$49)) vb 中 chr chr(29)是什么 Chr(64 + I) chr(asc(a)5) Chr(39)是什么意思 请问Chr(KeyAscii) Dryopteris bissetiana C.Chr. VFP中CHR(66)是什么意思? 懂德文的 Chr.Brackhahn