用户控制数据绑定-ASP.NET

如何解决用户控制数据绑定-ASP.NET

| 我开发了“地址”用户控件。它包含2个下拉菜单（国家和城市）和2个文本框（街道和建筑物）。第二个dropDown（城市）取决于选择的第一个dropdown国家。

<div>Country</div>
   <div> <asp:DropDownList runat=\"server\" ID=\"ddlCountry\" DataTextField=\"Name\" 
           DataValueField=\"Id\" DataSource=\"<%#Facade.Addresses.GetCountries() %>\" 
           AutoPostBack=\"true\"   onselectedindexchanged=\"ddlCountry_SelectedIndexChanged\" /></div>
</div>


<div>
<div>City</div>
<div>
  <asp:DropDownList runat=\"server\" ID=\"ddlCity\" DataTextField=\"Name\" 
        DataValueField=\"Name\"  />
</div>
</div>


<div>
<div>Street</div>
    <div><uc:TextBox ID=\"txtStreet\" Text=\"<%#Address.Street %>\" runat=\"server\"/></div>
</div>


<div>
<div>House</div>
    <div> <uc:TextBox ID=\"txtHouse\" Text=\"<%#Address.House%>\" runat=\"server\"/></div>
</div>



 public partial class AddressControl : UserControl
    {


        protected void Page_Init(object sender,EventArgs e)
        {
           ddlCountry.DataBind();
           BindCity(int.Parse(ddlCountry.SelectedValue));

        }


 public BEAddress Address
        {
            get
            {
                return new BEAddress
                {
                    Country = ddlCountry.SelectedItem.Text,City = ddlCity.SelectedItem.Text,Street = txtStreet.Text,House= txtHouse.Text
                };


            }
            set
            {


                BindCity(int.Parse(ddlCountry.Items.FindByText(value.Country).Value));

                var a = ddlCity.Items.FindByText(value.Country);
                if (a !=null)
                     a.Selected = true;



                txtStreet.Text = value.Street;
                txtHouse.Text = value.House;
            }

        }

        protected void ddlCountry_SelectedIndexChanged(object sender,EventArgs e) {
            BindCity(int.Parse(ddlCountry.SelectedValue));
        }



        private void BindCity(int countryId) {

            ddlCity.DataSource = Facade.Addresses.GetCities(countryId);
            ddlCity.DataBind();
        }
}

使用

ucAddress.Address = StoreDataSource.Address;

使用setter（

ucAddress.Address = StoreDataSource.Address

）时，dropDown \“ Cities \”没有正确包含值。 如何更改代码以强制控件正常工作？     

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

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