找不到 ProfileCommon

我在我的代码中收到错误 ProfileCommon 无法找到。我不知道如何修复该错误。我使用 system.Web.Profile 放置命名空间，但这里仍然出现错误。有人可以帮忙怎么做吗？如果您知道请帮助我。谢谢

public partial class UserProfile : System.Web.UI.UserControl
{
    private string _userName = "";
    public string UserName
    {
        get { return _userName; }

        set { _userName = value; }
    }

    protected void Page_Init(object sender, EventArgs e)
    {
        this.Page.RegisterRequiresControlState(this);
    }

    protected override void LoadControlState(object savedState)
    {
        object[] ctlState = (object[])savedState;
        base.LoadControlState(ctlState[0]);
        _userName = (string)ctlState[1];
    }

    protected override object SaveControlState()
    {
        object[] ctlState = new object[2];
        ctlState[0] = base.SaveControlState();
        ctlState[1] = _userName;
        return ctlState;
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            // if the UserName property contains an emtpy string, retrieve the profile
            // for the current user, otherwise for the specified user
            ProfileCommon profile = this.Profile;
            if (this.UserName.Length > 0)
                profile = this.Profile.GetProfile(this.UserName);
            txtFirstName.Text = profile.FirstName;
            txtLastName.Text = profile.LastName;
            ddlGenders.SelectedValue = profile.Gender;
            if (profile.BirthDate != DateTime.MinValue)
                txtBirthDate.Text = profile.BirthDate.ToShortDateString();
            ddlOccupations.SelectedValue = profile.Occupation;
            txtWebsite.Text = profile.Website;
            txtStreet.Text = profile.Address.Street;
            txtCity.Text = profile.Address.City;
            txtPostalCode.Text = profile.Address.PostalCode;
            txtState.Text = profile.Address.State;
            txtPhone.Text = profile.Contacts.Phone;
            txtFax.Text = profile.Contacts.Fax;
        }
    }
    public void Save()
    {
        // if the UserName property contains an emtpy string, save the current user's
        // profile, othwerwise save the profile for the specified user
        ProfileCommon profile = this.Profile;
        if (this.UserName.Length > 0)
            profile = this.Profile.GetProfile(this.UserName);
        profile.FirstName = txtFirstName.Text;
        profile.LastName = txtLastName.Text;
        profile.Gender = ddlGenders.SelectedValue;
        if (txtBirthDate.Text.Trim().Length > 0)
            profile.BirthDate = DateTime.Parse(txtBirthDate.Text);
        profile.Occupation = ddlOccupations.SelectedValue;
        profile.Website = txtWebsite.Text;
        profile.Address.Street = txtStreet.Text;
        profile.Address.City = txtCity.Text;
        profile.Address.PostalCode = txtPostalCode.Text;
        profile.Address.State = txtState.Text;
        profile.Contacts.Phone = txtPhone.Text;
        profile.Contacts.Fax = txtFax.Text;
        profile.Save();
    }

}

正如 Mark 指出的那样，配置文件只能与网站模板一起使用，并且我已经在博客中发布了有关如何使用插件以方便在 Web 应用程序项目中使用配置文件的说明：

http://www.codersbarn.com/post/2008/07/10/ASPNET-PayPal-Subscriptions-IPN.aspx http://www.codersbarn.com/post/2008/07/10/ASPNET-PayPal-Subscriptions-IPN.aspx

您可以自己完成此操作，您可以下载以下完整的工作实现：

http://leedumond.com/blog/asp-net-profiles-in-web-application-projects/ http://leedumond.com/blog/asp-net-profiles-in-web-application-projects/