عدم اجرای رویداد Web User Control

سلام

وقت بخیر

من یک Web User Control ساختم که یک DropDownList داره و آیتم هاش توی Web Form اضافه می شه:

ضمیمه 156324

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        With Me.ProjectType

            .Items.Clear()

            .Items.Add(New ListItem("Windows Forms", "Windows Forms"))

            .Items.Add(New ListItem("Console Application", "Console Application"))

            .Items.Add(New ListItem("Workflow Console Application", "Workflow Console Application"))

            .Items.Add(New ListItem("Asp.Net Web Application", "Asp.Net Web Application"))

            .Items.Add(New ListItem("Asp.Net MVC Application", "Asp.Net Web Application"))

        End With

    End Sub

و یک رویداد سفارشی داره که همزمان با رویداد SelectedIndexChanged از DropDownList Raise می شه و در Web Form استفاده کردم ولی اجرا نمی شه....

Web User Controlo

Public Class DropDownField

    Inherits System.Web.UI.UserControl

    Public Event SelectedValueChanged(value As String)

    Public Property FieldName() As String

        Get

            Return Me.Caption.Text

        End Get

        Set(ByVal value As String)

            Me.Caption.Text = value

        End Set

    End Property





    Public ReadOnly Property Items() As ListItemCollection

        Get

            Return Me.DropDownList1.Items

        End Get

    End Property

    Private SelectedValueValue As String

    Public Property SelectedValue() As String

        Get

            Return SelectedValueValue

        End Get

        Set(ByVal value As String)

            SelectedValueValue = value

        End Set

    End Property





    Public ReadOnly Property SelectedItem() As ListItem

        Get

            Return Me.DropDownList1.SelectedItem

        End Get

    End Property









    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

       

    End Sub





    Private Sub DropDownList1_SelectedIndexChanged(sender As Object, e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged

        Me.SelectedValue = Me.DropDownList1.SelectedItem.Value

        RaiseEvent SelectedValueChanged(Me.DropDownList1.SelectedItem  .Value)

    End Sub





End Class

Web Form:

 Private Sub ProjectType_SelectedValueChanged(value As String) Handles ProjectType.SelectedValueChanged

        MsgBox(value)

    End Sub

برای دریافت مقدار انتخاب شده باید از چه روشی استفاده کنم؟

سلام مجدد

مشکل DropDownList این بود که خصوصیت AutoPostBack براش تعیین نشده بود:

    <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="true">

    

    </asp:DropDownList>

 Private Sub DropDownList1_SelectedIndexChanged(sender As Object, e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged

        RaiseEvent SelectedValueChanged(Me.DropDownList1.SelectedItem  .Value)

    End Sub

ضمیمه 156325