'str1:用户名 'str2:密码 'str3:大区if len(str1)>0 and len(str2)>0 and len(str3)>0 then btnlogin.enabled=true 'btnlogin为登录按钮的名称 else btnlogin.enabled=false endif
放到timer事件里时时做检测
一个TextBox数组 Txt(0):用户名 Txt(1):密码 Txt(2):大区 cmdDN:登录Private Sub Txt_change(Index As Integer) if trim(txt(0)) <> "" and trim(txt(1)) <> "" and trim(txt(1)) <> "" then cmdDN.Enabled = true else cmdDN.Enabled = false endif end sub
if trim(txt(0)) <> "" and trim(txt(1)) <> "" and trim(txt(1)) <> "" then cmdDN.Enabled = true else cmdDN.Enabled = false endif
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'str2:密码
'str3:大区if len(str1)>0 and len(str2)>0 and len(str3)>0 then
btnlogin.enabled=true 'btnlogin为登录按钮的名称
else
btnlogin.enabled=false
endif
放到timer事件里时时做检测
Txt(0):用户名
Txt(1):密码
Txt(2):大区
cmdDN:登录Private Sub Txt_change(Index As Integer)
if trim(txt(0)) <> "" and trim(txt(1)) <> "" and trim(txt(1)) <> "" then
cmdDN.Enabled = true
else
cmdDN.Enabled = false
endif
end sub
cmdDN.Enabled = true
else
cmdDN.Enabled = false
endif