LinkButton.ValidationGroup 屬性

參考

定義

命名空間:: System.Web.UI.WebControls

組件:: System.Web.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

取得或設定控制項群組，LinkButton 控制項會在回傳至伺服器時，針對這個群組進行驗證。

public:
 virtual property System::String ^ ValidationGroup { System::String ^ get(); void set(System::String ^ value); };

[System.Web.UI.Themeable(false)]
public virtual string ValidationGroup { get; set; }

[<System.Web.UI.Themeable(false)>]
member this.ValidationGroup : string with get, set

Public Overridable Property ValidationGroup As String

屬性值

String

控制項群組，LinkButton 控制項會在回傳至伺服器時，針對這個群組進行驗證。預設值為空字串 ("")。

實作

ValidationGroup

屬性: ThemeableAttribute

範例

下列程式代碼範例示範如何使用 ValidationGroup 屬性來指定控制項在控件回傳至伺服器時 LinkButton 要驗證的控制件。頁面包含三個文本框，可從使用者擷取數據，以及三 RequiredFieldValidator 個控件，以確保使用者不會將文本框保留空白。 RequiredFieldValidator前兩個文本框的控件位於驗證群組中PersonalInfoGroup，而RequiredFieldValidator第三個文本框的控件位於驗證群組中LocationInfoGroup。按兩下時 LinkButton1 ，只會驗證驗證群組 PersonalInfoGroup 中的控制件。按兩下時 LinkButton2 ，只會驗證驗證群組 LocationInfoGroup 中的控制件。

重要

這個範例有一個可接受使用者輸入的文字方塊，這可能會造成安全性威脅。根據預設，ASP.NET Web 網頁會驗證使用者輸入未包含指令碼或 HTML 項目。如需詳細資訊，請參閱 Script Exploits Overview (指令碼攻擊概觀)。

<%@ page language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="head1" runat="server">
  <title>LinkButton.ValidationGroup Example</title>
</head>
<body>
  <form id="form1" runat="server">
  
    <h3>LinkButton.ValidationGroup Example</h3>

    <asp:label id="NameLabel" 
      text="Enter your name:"
      runat="Server"
      AssociatedControlID="NameTextBox">
    </asp:label>

    &nbsp
    
    <asp:textbox id="NameTextBox" 
      runat="Server">
    </asp:textbox>

    &nbsp

    <asp:requiredfieldvalidator id="RequiredFieldValidator1"
      controltovalidate="NameTextBox"
      validationgroup="PersonalInfoGroup"
      errormessage="Enter your name."
      runat="Server">
    </asp:requiredfieldvalidator>
    
    <br /><br />
    
    <asp:label id="AgeLabel" 
      text="Enter your age:"
      runat="Server"
      AssociatedControlID="AgeTextBox">
    </asp:label>

    &nbsp
    
    <asp:textbox id="AgeTextBox" 
      runat="Server">
    </asp:textbox>

    &nbsp

    <asp:requiredfieldvalidator id="RequiredFieldValidator2"
      controltovalidate="AgeTextBox"
      validationgroup="PersonalInfoGroup"
      errormessage="Enter your age."
      runat="Server">
    </asp:requiredfieldvalidator>
    
    <br /><br />

    <!--When LinkButton1 is clicked, only validation
    controls that are a part of PersonalInfoGroup
    are validated.-->
    <asp:linkbutton id="LinkButton1" 
      text="Validate" 
      causesvalidation="true"
      validationgroup="PersonalInfoGroup"
      runat="Server">
    </asp:linkbutton>
      
    <br /><br />
      
    <asp:label id="CityLabel" 
      text="Enter your city of residence:"
      runat="Server"
      AssociatedControlID="CityTextBox">
    </asp:label>

    &nbsp
    
    <asp:textbox id="CityTextBox" 
      runat="Server">
    </asp:textbox>

    &nbsp

    <asp:requiredfieldvalidator id="RequiredFieldValidator3"
      controltovalidate="CityTextBox"
      validationgroup="LocationInfoGroup"
      errormessage="Enter a city name."
      runat="Server">
    </asp:requiredfieldvalidator>
    
    <br /><br />

    <!--When LinkButton2 is clicked, only validation
    controls that are a part of LocationInfoGroup
    are validated.-->
    <asp:linkbutton id="LinkButton2" 
      text="Validate" 
      causesvalidation="true"
      validationgroup="LocationInfoGroup"
      runat="Server">
    </asp:linkbutton>

  </form>
</body>
</html>

<%@ page language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="head1" runat="server">
  <title>LinkButton.ValidationGroup Example</title>
</head>
<body>
  <form id="form1" runat="server">
  
    <h3>LinkButton.ValidationGroup Example</h3>

    <asp:label id="NameLabel" 
      text="Enter your name:"
      runat="Server"
      AssociatedControlID="NameTextBox">
    </asp:label>

    &nbsp
    
    <asp:textbox id="NameTextBox" 
      runat="Server">
    </asp:textbox>

    &nbsp

    <asp:requiredfieldvalidator id="RequiredFieldValidator1"
      controltovalidate="NameTextBox"
      validationgroup="PersonalInfoGroup"
      errormessage="Enter your name."
      runat="Server">
    </asp:requiredfieldvalidator>
    
    <br /><br />
    
    <asp:label id="AgeLabel" 
      text="Enter your age:"
      runat="Server"
      AssociatedControlID="AgeTextBox">
    </asp:label>

    &nbsp
    
    <asp:textbox id="AgeTextBox" 
      runat="Server">
    </asp:textbox>

    &nbsp

    <asp:requiredfieldvalidator id="RequiredFieldValidator2"
      controltovalidate="AgeTextBox"
      validationgroup="PersonalInfoGroup"
      errormessage="Enter your age."
      runat="Server">
    </asp:requiredfieldvalidator>
    
    <br /><br />

    <!--When LinkButton1 is clicked, only validation
    controls that are a part of PersonalInfoGroup
    are validated.-->
    <asp:linkbutton id="LinkButton1" 
      text="Validate" 
      causesvalidation="true"
      validationgroup="PersonalInfoGroup"
      runat="Server">
    </asp:linkbutton>
      
    <br /><br />
      
    <asp:label id="CityLabel" 
      text="Enter your city of residence:"
      runat="Server"
      AssociatedControlID="CityTextBox">
    </asp:label>

    &nbsp
    
    <asp:textbox id="CityTextBox" 
      runat="Server">
    </asp:textbox>

    &nbsp

    <asp:requiredfieldvalidator id="RequiredFieldValidator3"
      controltovalidate="CityTextBox"
      validationgroup="LocationInfoGroup"
      errormessage="Enter a city name."
      runat="Server">
    </asp:requiredfieldvalidator>
    
    <br /><br />

    <!--When LinkButton2 is clicked, only validation
    controls that are a part of LocationInfoGroup
    are validated.-->
    <asp:linkbutton id="LinkButton2" 
      text="Validate" 
      causesvalidation="true"
      validationgroup="LocationInfoGroup"
      runat="Server">
    </asp:linkbutton>

  </form>
</body>
</html>

備註

驗證群組可讓您將頁面上的驗證控件指派給特定類別。每個驗證群組都可以獨立於頁面上的其他驗證群組進行驗證。 ValidationGroup使用屬性可指定控制項在回傳至伺服器時造成驗證的驗證組LinkButton名。

只有當屬性的值設定為 true時，CausesValidation這個屬性才會生效。當您指定屬性的值 ValidationGroup 時，當控件回傳至伺服器時 LinkButton ，只會驗證屬於指定群組一部分的驗證控件。如果您未指定這個屬性的值，而且 CausesValidation 屬性設定 true為，則當控件傳回伺服器時，不會指派給驗證群組的頁面上的所有驗證控件都會經過驗證。

這個屬性無法由佈景主題或樣式表主題設定。如需詳細資訊，請參閱 ThemeableAttribute 和 ASP.NET 主題和面板。

適用於

共用方式為

LinkButton.ValidationGroup 屬性

定義

屬性值

實作

範例

備註

適用於

另請參閱

其他資源