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ASP.net 2.0 学习如何用户配置文件(一)

作者：佚名      ASP.NET网站开发编辑：admin      更新时间：2022-07-23
 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。