`

3.2Page.IsValid

XHTMLHTMLCC++C# 
阅读更多
Page.IsValid

设置Display属性
Static
Dynamic
None

<span id="reqProductName" style="color:Red;Visibility:hidden;">(Required) </span>
<span id="reqProductName" style="color:Red;display:none;">(Required) </span>
  Visibility和display都能隐藏文本但是visibility属性隐藏文本仍然会占用屏幕空间，display不占屏幕空间。

通常情况下，应当将验证控件的Display属性设置为Dynamic，不会将内容推到右边。

突出显示验证错误
<asp:RequiredFieldValidator ID="reqProductQuantity" ControlToValidate="txtProductQuantity"
                Text="<img src='error.gif' alt='Fist name is required.'/>" Display="Dynamic" runat="server" />

SetFocusOnError="true"
<asp:RequiredFieldValidator ID="reqProductQuantity" ControlToValidate="txtProductQuantity"
                Text="<img src='error.gif' alt='Fist name is required.'/>"
setFocusOnError="true"
Display="Dynamic" runat="server" />


<%@ 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">

    protected void btnLogin_Click(object sender, EventArgs e)
    {
        if (Page.IsValid)
            lblLoginResult.Text = "Log in sucessful!";
       
    }

    protected void btnRegister_Click(object sender, EventArgs e)
    {
        if (Page.IsValid)
            lblRegisterResult.Text = "Registration sucessful!";
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head  id="Head1" runat="server">
<style type="text/css">
  html
  {
      background-color:Silver;
      }
    .column
    {
        float:left;
        width:300px;
        margin-left:10px;
        background-color:White;
        border:solid 1px black;
        padding:10px;
       
        }
</style>
    <title>Show Validation Groups</title>
</head>
<body>
    <form id="form1" runat="server">
    <div class="column">
     <fieldset>
       <legend>Login</legend>
       <p>
        Please log in to our Website.
       </p>
       <asp:Label ID="lblUserName"
       Text="User Name:"
       AssociatedControlID="txtUserName" runat="server"></asp:Label>
       <br />
       <asp:TextBox ID="txtUserName" runat="server" />
       <asp:RequiredFieldValidator ID="reqUserName"
       ControlToValidate="txtUserName" Text="(Required)" ValidationGroup="LoginGroup" runat="server" />
       <br /><br />
       <asp:Label ID="lblPassword" Text="Password:" AssociatedControlID="txtPassword" runat="server" />
       <br />
       <asp:TextBox ID="txtPassword" TextMode="Password" runat="server" />
       <asp:RequiredFieldValidator ID="reqPassword" ControlToValidate="txtPassword" Text="(Required)"
        ValidationGroup="LoginGroup" Runat="server"/>
        <br /><br />
        <asp:Button ID="btnLogin" Text="Login" ValidationGroup="LoginGroup" runat="server" OnClick="btnLogin_Click" />

     </fieldset>
     <asp:Label ID="lblLoginResult" runat="server" />
    </div>
    <div class="column">
    <fieldset>
     <legend>Register</legend>
     <p>If you do not have a User Name,please register at our WebSite.</p>
     <asp:Label ID="lblFirstName" Text="First Name:"
      AssociatedControlID="txtFirstName" runat="server" />
      <br />
      <asp:TextBox ID="txtFirstName" runat="server" />
      <asp:RequiredFieldValidator ID="reqFirstName" ControlToValidate="txtFirstName"
       Text="(Required)" ValidationGroup="RigsterGroup" runat="server" />
       <br /><br />
        <asp:Label ID="lblLastName" Text="Last Name:"
      AssociatedControlID="txtLastName" runat="server" />
      <br />
      <asp:TextBox ID="txtLastName" runat="server" />
      <asp:RequiredFieldValidator ID="reqLastName" ControlToValidate="txtLastName"
       Text="(Required)" ValidationGroup="RigsterGroup" runat="server" />
       <br /><br />
       <asp:Button ID="btnRegister" Text="Register" ValidationGroup="RigsterGroup" runat="server" OnClick="btnRegister_Click" />
    </fieldset>
    <asp:Label ID="lblRegisterResult" runat="server" />
    </div>
    </form>
</body>
</html>

2011-4-26 11:32 danny


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