通过

LinkButton.ValidationGroup 属性

  • 参考

定义

命名空间:
System.Web.UI.WebControls
程序集:
System.Web.dll

获取或设置在 LinkButton 控件回发到服务器时导致验证的控件组。

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

属性值

String

在 LinkButton 控件回发到服务器时导致验证的控件组。 默认值为空字符串 ("")。

实现

ValidationGroup
属性
ThemeableAttribute

示例

下面的代码示例演示如何使用 ValidationGroup 属性指定控件在控件发回服务器时 LinkButton 要验证的控件。 该页包含三个文本框，用于从用户捕获数据，以及三 RequiredFieldValidator 个控件，以确保用户不会将文本框留空。 RequiredFieldValidator前两个文本框的控件位于PersonalInfoGroup验证组中，RequiredFieldValidator第三个文本框的控件位于LocationInfoGroup验证组中。 单击时 LinkButton1 ，只会验证验证组中 PersonalInfoGroup 的控件。 单击后 LinkButton2 ，只会验证验证组中 LocationInfoGroup 的控件。

重要

此示例具有一个接受用户输入的文本框，这是一个潜在的安全威胁。 默认情况下，ASP.NET 网页验证用户输入是否不包含脚本或 HTML 元素。 有关详细信息，请参阅脚本侵入概述。

<%@ 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>

注解

使用验证组可以将页面上的验证控件分配给特定类别。 每个验证组可以独立于页面上的其他验证组进行验证。 使用 ValidationGroup 属性指定控件在发回服务器时导致验证的验证组 LinkButton 的名称。

This property has an effect only when the value of the CausesValidation property is set to true. 为属性指定值 ValidationGroup 时，当控件发回服务器时 LinkButton ，只会验证属于指定组一部分的验证控件。 如果未为此属性指定值，并且该 CausesValidation 属性设置为 true，则当控件发回服务器时，不会分配给验证组的页面上的所有验证控件都会得到验证。

无法通过主题或样式表主题设置此属性。 有关详细信息，请参阅 ThemeableAttribute ASP.NET 主题和外观。

适用于

另请参阅