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2005-02-20 17:12 218 查看

我做了个登陆的页面，上面只有一个button 是个webcontrol，另外还有个文本框，可是在文本框输入回车的时候却不是激发 button的onclick事件。。这是为什么呢？直接点击这个button是可以正确执行的，没有问题。

aspx文件如下

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >

<HTML>

    <HEAD>

        <title>Login</title>

        <meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">

        <meta content="C#" name="CODE_LANGUAGE">

        <meta content="JavaScript" name="vs_defaultClientScript">

        <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">

    </HEAD>

    <body MS_POSITIONING="GridLayout">

        <form id="Form1" method="post" runat="server">

            <asp:label id="Label1" style="Z-INDEX: 101; LEFT: 176px; POSITION: absolute; TOP: 56px" runat="server">用户名</asp:label>

            <asp:label id="Label2" style="Z-INDEX: 102; LEFT: 176px; POSITION: absolute; TOP: 96px" runat="server">密码</asp:label>

            <asp:textbox id="TextBoxPassword" style="Z-INDEX: 103; LEFT: 248px; POSITION: absolute; TOP: 96px"

                runat="server" TextMode="Password"></asp:textbox>

            <asp:button id="ButtonLogin" style="Z-INDEX: 104; LEFT: 224px; POSITION: absolute; TOP: 168px"

                runat="server" Text="登陆" Width="72px" Height="24px"></asp:button>

            <asp:dropdownlist id="DropDownListUsername" style="Z-INDEX: 105; LEFT: 248px; POSITION: absolute; TOP: 56px"

                runat="server" Width="152px" Height="24px" ForeColor="Black"></asp:dropdownlist>

            <asp:Label id="LabelLoginHints" style="Z-INDEX: 106; LEFT: 200px; POSITION: absolute; TOP: 136px"

                runat="server" Height="16px" Width="160px" Visible="False"></asp:Label></form>

    </body>

</HTML>

生成的html页面源代码如下

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >

<HTML>

    <HEAD>

        <title>Login</title>

        <meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">

        <meta content="C#" name="CODE_LANGUAGE">

        <meta content="JavaScript" name="vs_defaultClientScript">

        <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">

    </HEAD>

    <body MS_POSITIONING="GridLayout">

        <form name="Form1" method="post" action="login.aspx" id="Form1">

<input type="hidden" name="__VIEWSTATE" value="dDwtMjAyODkxODIxNDt0PDtsPGk8MT47PjtsPHQ8O2w8aTw5Pjs+O2w8dDx0PHA8cDxsPERhdGFNZW1iZXI7RGF0YVRleHRGaWVsZDs+O2w8WW9uZ2h1O21pbmdjaGVuZzs+Pjs+O3Q8aTwxPjtAPGFkbWluOz47QDxhZG1pbjs+Pjs+Ozs+Oz4+Oz4+Oz6mXAwirhGRHCGNRsa9w1rNH6t3GA==" />

            <span id="Label1" style="Z-INDEX: 101; LEFT: 176px; POSITION: absolute; TOP: 56px">用户名</span>

            <span id="Label2" style="Z-INDEX: 102; LEFT: 176px; POSITION: absolute; TOP: 96px">密码</span>

            <input name="TextBoxPassword" type="password" id="TextBoxPassword" style="Z-INDEX: 103; LEFT: 248px; POSITION: absolute; TOP: 96px" />

            <input type="submit" name="ButtonLogin" value="登陆" id="ButtonLogin" style="height:24px;width:72px;Z-INDEX: 104; LEFT: 224px; POSITION: absolute; TOP: 168px" />

            <select name="DropDownListUsername" id="DropDownListUsername" style="color:Black;height:24px;width:152px;Z-INDEX: 105; LEFT: 248px; POSITION: absolute; TOP: 56px">

    <option value="admin">admin</option>

</select>

            </form>

    </body>

</HTML>

<%@ Page language="c#" Codebehind="Login.aspx.cs" AutoEventWireup="false" Inherits="gx.Login" %>可以看到input type=submit 的确在 form里面，可是就是没有效果，这是为什么呢？

多谢各位达人了

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