mdb数据库怎么检测已存在？
$name = GUICtrlRead($Input2_1,"")$xb = GUICtrlRead($Combo2_1,"")
$zjlx = GUICtrlRead($Combo2_2,"")
$zjbh = GUICtrlRead($Input2_2,"")
$dizhi= GUICtrlRead($Input2_3,"")
If $name = "" Or$zjbh="" Or $dizhi=""Then
MsgBox(64, "提示", "各项不能为空，请正确填写!")
ElseIf 怎么检测已存在？{:face (396):} Then
MsgBox(0,"","存在")
Else
$addfld = ObjCreate("ADODB.Connection")
$addfld.Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & $mdb_data & ";Jet Oledb:Database Password=" & $mdb_pwd)
$addfld.Execute("insert into chenweidong (姓名,性别,证件类型,证件编号,地址) values('"&$name&"','"&$xb&"','"&$zjlx&"','"&$zjbh&"','"&$dizhi&"')")
$addfld.close
MsgBox(4096, "提示:"," 成功写入数据库！")
GUISwitch($Form2)
GUISetState(@SW_HIDE)
EndIf
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