PostBackOptions.ValidationGroup 属性

参考

定义

命名空间:: System.Web.UI

程序集:: System.Web.dll

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

获取或设置一个控件组，当该控件组回发到服务器时，PostBackOptions 将引发对它的验证。

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

public string ValidationGroup { get; set; }

member this.ValidationGroup : string with get, set

Public Property ValidationGroup As String

属性值

String

一个控件组，当控件组回发到服务器时， PostBackOptions 对象将引发对它的验证。默认值为空字符串 ("")。

示例

下面的代码示例演示如何使用 ValidationGroup 和 PerformValidation 属性来确保两个 TextBox 控件在生成回发事件之前在它们中输入了信息。 NameTextBox和 AgeTextBox 控件是验证组的PersonalInfoGroup一部分，但StateTextBox控件不是。因此，在生成回发事件之前，用户不必在 StateTextBox 控件中输入任何数据。

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">

<script runat="server">

  void Page_Init(object sender, EventArgs e)
  {
    PostBackOptions myPostBackOptions = new PostBackOptions(FruitRadioButtonList);

    myPostBackOptions.RequiresJavaScriptProtocol = true;
    myPostBackOptions.PerformValidation = true;
    myPostBackOptions.ValidationGroup = "PersonalInfoGroup";

    string reference = Page.ClientScript.GetPostBackEventReference(myPostBackOptions);
    FruitRadioButtonList.Attributes.Add("onclick", reference);
  } 

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="Head1" runat="server">
    <title>PerformValidation and ValidationGroup Example</title>
  </head>
  <body>
    <form id="form1" runat="server">
      <h3>PostBackOptions PerformValidation and 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 />
      
      <asp:label id="State" 
        text="Enter the state where you live:"
        runat="server"
        AssociatedControlID="StateTextBox">
      </asp:label>

      &nbsp
      
      <asp:textbox id="StateTextBox" 
        runat="server">
      </asp:textbox>

      &nbsp
      
      <br /><br />
    
    
      <asp:Label id="FruitLabel" 
        text="Please select your preferred fruit:" 
        runat="server"
        AssociatedControlID="FruitRadioButtonList">
      </asp:Label>
      
      <asp:RadioButtonList ID="FruitRadioButtonList" runat="server" >
        <asp:ListItem>Apples</asp:ListItem>
        <asp:ListItem>Oranges</asp:ListItem>
        <asp:ListItem>Pears</asp:ListItem>
        <asp:ListItem>Peaches</asp:ListItem>
        <asp:ListItem>Grapes</asp:ListItem>
        <asp:ListItem>Lemons</asp:ListItem>
        <asp:ListItem>Limes</asp:ListItem>
        <asp:ListItem>Plums</asp:ListItem>
      </asp:RadioButtonList>
      
    </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">

<script runat="server">
  
  Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs)
  
    Dim myPostBackOptions As PostBackOptions = New PostBackOptions(FruitRadioButtonList)

    myPostBackOptions.RequiresJavaScriptProtocol = True
    myPostBackOptions.PerformValidation = True
    myPostBackOptions.ValidationGroup = "PersonalInfoGroup"

    Dim reference As String = Page.ClientScript.GetPostBackEventReference(myPostBackOptions)
    FruitRadioButtonList.Attributes.Add("onclick", reference)
    
  End Sub


</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>PerformValidation and ValidationGroup Example</title>
  </head>
  <body>
    <form id="form1" runat="server">
      <h3>PostBackOptions PerformValidation and 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 />
      
      <asp:label id="State" 
        text="Enter the state where you live:"
        runat="server"
        AssociatedControlID="State">
      </asp:label>

      &nbsp
      
      <asp:textbox id="StateTextBox" 
        runat="server">
      </asp:textbox>

      &nbsp
      
      <br /><br />
    
    
      <asp:Label id="FruitLabel" 
        text="Please select your preferred fruit:" 
        runat="server"
        AssociatedControlID="FruitRadioButtonList">
      </asp:Label>
      
      <asp:RadioButtonList ID="FruitRadioButtonList" runat="server" >
        <asp:ListItem>Apples</asp:ListItem>
        <asp:ListItem>Oranges</asp:ListItem>
        <asp:ListItem>Pears</asp:ListItem>
        <asp:ListItem>Peaches</asp:ListItem>
        <asp:ListItem>Grapes</asp:ListItem>
        <asp:ListItem>Lemons</asp:ListItem>
        <asp:ListItem>Limes</asp:ListItem>
        <asp:ListItem>Plums</asp:ListItem>
      </asp:RadioButtonList>
      
    </form>
  </body>
</html>

注解

ValidationGroup使用属性指定验证组，以在生成回发事件时进行验证。仅验证指定验证组中的验证控件。

适用于

另请参阅

PerformValidation

通过

PostBackOptions.ValidationGroup 属性

定义

属性值

示例

注解

适用于

另请参阅

其他资源