ASP.net 2.0 学习如何用户配置文件(一)
概念:Profile对象提供强类型、可持久化的Session状态表单
Web配置文件节点代码：<黑白激光传真一体机>
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<profile>
<properties>
<add name="firstName"/>
<add name="lastName"/>
<add name="numberOfVisits" type="Int32" defaultValue="0"/>
</properties>
</profile>
<profile>
<properties>
<add name="firstName"/>
<add name="lastName"/>
<add name="numberOfVisits" type="Int32" defaultValue="0"/>
</properties>
</profile>
在Web配置文件中定义Profile后，可以使用Profile对象修改其属性。
ASP.NET前台界面调用显示结果示例代码：<低速复印机>
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<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Show Profile</title>
</head>
<body>
<form id="form1" runat="server">
<div>
First Name:
<asp:Label
id="lblFirstname"
Runat="server" />
<br /><br />
Last Name:
<asp:Label
id="lblLastName"
Runat="server" />
<br /><br />
Number of Visits:
<asp:Label
id="lblNumberOfVisits"
Runat="server" />
<hr />
<asp:Label
id="lblNewFirstName"
Text="New First Name:"
AssociatedControlID="txtNewFirstName"
Runat="server" />
<asp:TextBox
id="txtNewFirstName"
Runat="server" />
<br /><br />
<asp:Label
id="lblNewLastName"
Text="New Last Name:"
AssociatedControlID="txtNewLastName"
Runat="server" />
<asp:TextBox
id="txtNewLastName"
Runat="server" />
<br /><br />
<asp:Button
id="btnUpdate"
Text="Update Profile"
OnClick="btnUpdate_Click"
Runat="server" />
</div>
</form>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Show Profile</title>
</head>
<body>
<form id="form1" runat="server">
<div>
First Name:
<asp:Label
id="lblFirstname"
Runat="server" />
<br /><br />
Last Name:
<asp:Label
id="lblLastName"
Runat="server" />
<br /><br />
Number of Visits:
<asp:Label
id="lblNumberOfVisits"
Runat="server" />
<hr />
<asp:Label
id="lblNewFirstName"
Text="New First Name:"
AssociatedControlID="txtNewFirstName"
Runat="server" />
<asp:TextBox
id="txtNewFirstName"
Runat="server" />
<br /><br />
<asp:Label
id="lblNewLastName"
Text="New Last Name:"
AssociatedControlID="txtNewLastName"
Runat="server" />
<asp:TextBox
id="txtNewLastName"
Runat="server" />
<br /><br />
<asp:Button
id="btnUpdate"
Text="Update Profile"
OnClick="btnUpdate_Click"
Runat="server" />
</div>
</form>
</body>
</html>
ASP.NET后台属性赋值示例代码：
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void Page_PreRender()
{
lblFirstname.Text = Profile.firstName;
lblLastName.Text = Profile.lastName;
Profile.numberOfVisits++;
lblNumberOfVisits.Text =Profile.numberOfVisits.ToString();
}
protected void btnUpdate_Click(object sender, EventArgs e)
{
Profile.firstName = txtNewFirstName.Text;
Profile.lastName = txtNewLastName.Text;
}
void Page_PreRender()
{
lblFirstname.Text = Profile.firstName;
lblLastName.Text = Profile.lastName;
Profile.numberOfVisits++;
lblNumberOfVisits.Text =Profile.numberOfVisits.ToString();
}
protected void btnUpdate_Click(object sender, EventArgs e)
{
Profile.firstName = txtNewFirstName.Text;
Profile.lastName = txtNewLastName.Text;
}
最后理解Profile属性是持久化的非常重要。如果为一个用户设置Profile属性，那么就是该用户过500年也不会返回网站，属性也会保留其值。不想Sess状态。
默认Profile不支持匿名用户，如果需支持匿名用户的话，则在WEB配置文件需另外的配置额外的属性，具体细节，下次马上更新。