custom validator and validationGroup

Validation groups allow you to organize validation controls on a page as a set.

Each validation group can perform validation independently from other validation groups on the page

代码

<%@ 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>Button.ValidationGroup Example</title>
</head>
<body>
  <form id="form1" runat="server">

    <h3>Button.ValidationGroup Example</h3>

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

     

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

     

    <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>

     

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

     

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

    <br /><br />

    
    <asp:button id="Button1"
      text="Validate"
      causesvalidation="true"
      validationgroup="PersonalInfoGroup"
      runat="Server" />

    <br /><br />

    <asp:label id="CityLabel"
      text="Enter your city of residence:"
      runat="Server"
      AssociatedControlID="CityTextBox">
    </asp:label>

     

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

     

    <asp:ListBox ID="lstPickClass" runat="server" AutoPostBack="True">
          <asp:ListItem Selected="True">Choose a Course</asp:ListItem>
          <asp:ListItem Value="MedErrorPrevention">Med Error Prevention</asp:ListItem>
          <asp:ListItem Value="FloridaMisFills">Florida MisFills</asp:ListItem>
    </asp:listbox>
    <asp:customvalidator id="CustomValidator1" runat="server" controltovalidate="lstPickClass"
           errormessage="Please select a Course" onservervalidate="CustomValidator1_ServerValidate"
       validateemptytext="True"></asp:customvalidator>

     //add this to code behind..
     //  protected void lstPickClass_ServerValidate(object source, ServerValidateEventArgs args)
     //  {
     //       args.IsValid = (lstPickClass.SelectedIndex > 0);
     //  }

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

    <br /><br />

    
    <asp:button id="Button2"
      text="Validate"
      causesvalidation="true"
      validationgroup="LocationInfoGroup"
      runat="Server" />

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

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原文地址：https://www.cnblogs.com/sandy_liao/p/1756298.html