ComboBox doesn't work like a DropDownList

[Chase Florell]

I am fighting with the combo box and am almost ready to give up.

I need to be able to retrieve the values but it does not seem to work like the DropDownList Does... what am I doing wrong?

This part works fine

            Dim PagesDC As New Dal.icms_PagesDataContext
            Dim ParentPages = PagesDC.icms_Pages_GetParentPages()
            ddlParentPage.DataSource = ParentPages
            ddlParentPage.DataTextField = "MenuName"
            ddlParentPage.DataValueField = "ID"
            ddlParentPage.DataBind()
            ddlParentPage.Items.Insert(Nothing, New RadComboBoxItem("[main menu]"))

But this is throwing an error

    Protected Sub btnCreate_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnCreate.Click

        Dim _UserName As String = Page.User.Identity.Name
        Dim _isPublished As Boolean = False
        If chkPublished.Checked = True Then _isPublished = True
        Dim _ParentPage As Integer = Nothing

        If Convert.ToInt32(ddlParentPage.SelectedItem.Value) <> Nothing Then _
        _ParentPage = Convert.ToInt32(ddlParentPage.SelectedItem.Value)

        Dim PagesDC As New Dal.icms_PagesDataContext
        Dim insert = PagesDC.icms_Pages_CreateNewPage(_ParentPage, _
                                                      RadComboBox1.SelectedItem.Value, _
                                                      txtMenuOrder.Text, _
                                                      txtMenuName.Text, _
                                                      txtTitle.Text, _
                                                      txtMetaKeywords.Text, _
                                                      txtMetaDescription.Text, _
                                                      _UserName, _
                                                      _isPublished)
        PagesDC.SubmitChanges()
    End Sub

Exception Details: System.FormatException: Input string was not in a correct format.

Source Error:

Line 99: Dim _ParentPage As Integer = Nothing Line 100: Line 101: If Convert.ToInt32(ddlParentPage.SelectedItem.Text) <> "[main menu]" Then _ Line 102: _ParentPage = Convert.ToInt32(ddlParentPage.SelectedItem.Value) Line 103:

Source File: D:\Development\Visual Studio\xxxxxxx.com\App_Windows\Admin_Controls\Pages.ascx.vb    Line: 101

[-DJ-]

Hello Chase,

Looks to me like you are trying to convert a string into an integer:
Is the
    ddlParentPage.SelectedItem.Text
numeric?

The error messages seems to indicate it isn't.

Regards,
-DJ-

[Atanas Korchev]

Hello,

Indeed it seems you should be using the Value property instead of the Text of the selected item. The same behavior should be reported by the DropDownList as well.

Regards,
Albert
the Telerik team

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