ControlToCompare 屬性

設定或傳回要比較的輸入控制項 ID。預設值是空字串 ("")。

public string ControlToCompare {
   get,
   set
}

備註

指定要比較數值的控制項 ID。您也可以使用 ValueToCompare 屬性。如果二者都有指定，則會優先使用 ControlToCompare 屬性值。

範例

下列範例示範如何使用 ControlToCompare 屬性驗證使用者是否輸入所需密碼。

<mobile:Form runat=server id="Form1" Alignment=center> 
   <mobile:Label runat="server" id="lblUserPwd" 
      Text="Password (req'd)" />
   <mobile:Textbox  runat="server" id="txtUserPwd"/>
   <mobile:RequiredFieldValidator runat="server" id="rfvUserPwd" 
      ControlToValidate="txtUserPwd" />
   <mobile:RegularExpressionValidator runat="server" id="revUserPwd"
      ControlToValidate="txtUserPwd" />
   <mobile:Label runat="server" id="lblUserPwd2" 
      Text="Re-enter Password (req'd)" />
   <mobile:Textbox  runat="server" id="txtUserPwd2"/>
   <Mobile:CompareValidator runat=server id=valcmprPassword Type=String
      ControlToValidate="txtUserPwd"  Operator=Equal 
      ErrorMessage="Passwords did not match!" 
      ControlToCompare="txtUserPwd2"/>
   <mobile:Command runat="server" id="Command1" text="Submit" />
</mobile:Form>

請參閱

Web Form ControlToCompare 屬性

套用至：CompareValidator 類別