Web parts 通信

1. 定义通信接口

public interface IEmployeeInfo
{
    int EmployeeID { get; set; }
}

2. 在提供者中定义接口成员

 

    public class EmployeesWebPart : WebPart, IEmployeeInfo
    {
        [Personalizable(true), WebBrowsable(true)]
        public int EmployeeID
        {
            get { return _empID; }
            set { _empID = value; }
        }
    //
    }

3. 在提供者中实现[ConnectionProvider]方法

 

    public class EmployeesWebPart : WebPart, IEmployeeInfo
    }

4. 在订阅者中实现[ConnectionConsumer]方法

    public class OrdersWebPart : WebPart
    }

 

5. 在WebPartManager控件中声明连接.

<table border="0">
                    <tr>
                        <td colspan="2">
                            <asp:WebPartManager ID="WebPartManager1" runat="server">
                                <StaticConnections>
                                    <asp:WebPartConnection ID="EmpConnection" ProviderID="EmployeesWebPart1" ProviderConnectionPointID="EmployeeIDProvider"
                                        ConsumerID="OrdersWebPart1" ConsumerConnectionPointID="EmployeeIDConsumer" />
                                </StaticConnections>
                            </asp:WebPartManager>
                        </td>
                    </tr>
                    <tr valign="top">
                        <td>
                            <asp:WebPartZone ID="WebPartZone1" runat="server" Width="300px">
                            <ZoneTemplate>
                                <cw1:EmployeesWebPart ID="EmployeesWebPart1" runat="server" EmployeeID="1" />
                            </ZoneTemplate>
                            </asp:WebPartZone> </td>
                        <td>
                            <asp:WebPartZone ID="WebPartZone2" runat="server" Width="300px">
                                <ZoneTemplate>
                                    <cw1:OrdersWebPart ID="OrdersWebPart1" runat="server" />
                                </ZoneTemplate>
                            </asp:WebPartZone>
                            </td>
                    </tr>
                </table>