Problem with loading tool tip in repeater

2 posts, 0 answers
  1. Web Services
    Web Services avatar
    243 posts
    Member since:
    Apr 2008

    Posted 06 Jun 2012 Link to this post

    I'm trying to fix a site I didn't build and I can't figure out why this data is not binding. It's a tool tip inside of a repeater and the tool tip has a control in it. Here is the code.

    <telerik:RadToolTip ID="PaperRevTooltip" runat="server" ManualClose="True" Modal="True"
                Position="Center" RelativeTo="BrowserWindow" ShowEvent="FromCode" Skin="Telerik"
                Title="Reviewers" Width="400" Height="400">
                <asp:Repeater ID="Repeater1" runat="server">
                    <HeaderTemplate>
                        <table border="0" cellpadding="0" cellspacing="5">
                    </HeaderTemplate>
                    <ItemTemplate>
                        <UC1:UControl ID="test3" runat="server" PaperID='<%# DataBinder.Eval(Container.DataItem, "PaperID")%>'
                            ReviewerID='<%# DataBinder.Eval(Container.DataItem, "ReviewerUserID")%>' reviewId='<%# DataBinder.Eval(Container.DataItem, "ReviewOfPaperID")%>' />
                    </ItemTemplate>
                    <FooterTemplate>
                        </table>
                    </FooterTemplate>
                </asp:Repeater>
                <asp:SqlDataSource ID="ReviewersSqlDS" runat="server" ConnectionString="<%$ ConnectionStrings:conferencehubConnectionString %>"
                    SelectCommand="admin_PaperReviewers" SelectCommandType="StoredProcedure">
                    <SelectParameters>
                        <asp:Parameter Name="PaperID" Type="Int16" DefaultValue="0" Direction="Input" />
                    </SelectParameters>
                </asp:SqlDataSource>
            </telerik:RadToolTip>

    Here is the relevant code behind for that page. note the item command comes from a rad grid the tool tip shows, but with nothing but the title
    Protected Sub item_command(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Handles PapersGV.ItemCommand
           Dim index As Integer
           Dim paperID As String
           If e.CommandName = "changeRev" Then
               index = e.Item.ItemIndex
               paperID = Me.PapersGV.Items(index).GetDataKeyValue("PaperID")
               Me.PaperRevTooltip.Title = Me.PapersGV.Items(index).GetDataKeyValue("PaperTitle")
     
               loadPaperReviewersData(paperID)
     
               Me.PaperRevTooltip.visible = True
               Me.PaperRevTooltip.Show()
           Else
               Me.PaperRevTooltip.visible = False
           End If
       End Sub
    Protected Sub loadPaperReviewersData(ByVal paperID As String)
           Dim dt As DataTable
           Dim connString As String = System.Configuration.ConfigurationManager.ConnectionStrings("conferencehubConnectionString").ToString
           Dim myConnection As New Data.SqlClient.SqlConnection(connString)
           Dim strSQL As String = "admin_PaperReviewers"
           Dim selectCommand As New Data.SqlClient.SqlCommand(strSQL, myConnection)
           Dim SQLReader As SqlDataReader
           Dim paperIDParam As SqlParameter
           Dim values() = {"-1", "-1", "0", paperID, ""}
           Try
               selectCommand.CommandType = Data.CommandType.StoredProcedure
               paperIDParam = New SqlParameter("PaperId", Data.SqlDbType.Int)
               paperIDParam.Value = paperID
               selectCommand.Parameters.Add(paperIDParam)
               myConnection.Open()
               SQLReader = selectCommand.ExecuteReader()
               dt = New DataTable
               dt.Load(SQLReader)
               myConnection.Close()
     
               'While dt.Rows.Count < minReviewers
               If dt.Rows.Count < maxReviewers Then
                   dt.Rows.Add(values)
               End If
     
               'End While
     
               Me.paperReviewersDT = dt
               Me.Repeater1.DataSource = dt
               Me.Repeater1.DataBind()
           Catch ex As Exception
               Response.Write("There has been an error.<br />" & ex.ToString & "<Br />" & strSQL)
           Finally
               myConnection.Close()
           End Try
       End Sub
       Private Property paperReviewersDT() As DataTable
           Get
               Return CType(ViewState("allRevs"), DataTable)
           End Get
           Set(ByVal value As DataTable)
               ViewState("allRevs") = value
           End Set
       End Property


    Here is the control uc1
        <td>test
            <asp:Label ID="output" runat="server"></asp:Label>
            <asp:DropDownList ID="RevDropDownList" runat="server" DataSourceID="TrackSqlDS" DataTextField="ReviewerName"
                DataValueField="UserID">
            </asp:DropDownList>
            <asp:CustomValidator ID="revValidator" runat="server" ErrorMessage="*"></asp:CustomValidator>
        </td>
        <td>
            <asp:Button ID="AddButton" runat="server" Text="Add" CommandName="AddReviewer" />
         
            <asp:Button ID="DelButton" runat="server" Text="Delete" CommandName="DeleteReviewer"
                Visible="false" />
         
            <asp:Button ID="UpdateButton" runat="server" Text="Update" CommandName="UpdateReviewer"
                Visible="false"/>
        </td>
        <asp:SqlDataSource ID="TrackSqlDS" runat="server" ConnectionString="<%$ ConnectionStrings:conferencehubConnectionString %>"
            SelectCommand="admin_AllReviewers" SelectCommandType="StoredProcedure" OnSelecting="TrackItDataSource_Selecting">
            <SelectParameters>
                <asp:Parameter Name="PaperID" Type="Int32" />
            </SelectParameters>
        </asp:SqlDataSource>
    </tr>

    And the control code
        Private _ReviewerID As Integer
        Private _ReviewID As Integer
        Public Property reviewId() As Integer
            Get
                Return CType(ViewState("reviewId"), Integer)
            End Get
            Set(ByVal value As Integer)
                ViewState("reviewId") = value
            End Set
        End Property
     
        Public Property PaperID() As Integer
            Get
                Return CType(ViewState("paperId"), Integer)
            End Get
            Set(ByVal value As Integer)
                ViewState("paperId") = value
            End Set
        End Property
        Public Property ReviewerID() As Integer
            Get
                Return Me.RevDropDownList.SelectedItem.Value
            End Get
            Set(ByVal value As Integer)
                _ReviewerID = value
            End Set
        End Property
        Public ReadOnly Property ReviewerName() As String
            Get
                Return Me.RevDropDownList.SelectedItem.Text
            End Get
        End Property
    #Region "SQLDS Events"
        Protected Sub TrackItDataSource_Selecting(ByVal sender As Object, ByVal e As SqlDataSourceSelectingEventArgs)
            e.Command.Parameters.Item(0).Value = PaperID
        End Sub
    #End Region
        Protected Sub rev_Bound(ByVal sender As Object, ByVal e As System.EventArgs) Handles RevDropDownList.DataBound
            Dim defaultItem As New ListItem("- Select Reviewer -", "-1")
            RevDropDownList.Items.Insert(0, defaultItem)
            output.Text = "test"
            If _ReviewerID <> 0 Then
                RevDropDownList.Items.FindByValue(_ReviewerID).Selected = True
            End If
     
            If isValid() Then
                AddButton.Visible = False
                UpdateButton.Visible = True
                DelButton.Visible = True
            End If
        End Sub
        Public Function isValid() As Boolean
            If RevDropDownList.SelectedIndex = 0 Then
                revValidator.IsValid = False
                Return False
            Else
                Return True
            End If
        End Function
        Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
            RevDropDownList.DataBind()
            output.Text = "test"
        End Sub
        Protected Sub AddButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles AddButton.Click
            If isValid() Then
                ReviewerID = Me.RevDropDownList.SelectedItem.Value
            End If
        End Sub

    I'm kind of lost as to why not even the text "test" shows up when you show the tool tip.









  2. Marin Bratanov
    Admin
    Marin Bratanov avatar
    3600 posts

    Posted 08 Jun 2012 Link to this post

    Hello,

    This stems from the fact that the Page_Load of the user control is fired too early in the page lifecycle for your needs and the repeater is still not databound. You would have the same issue when you replace the RadTooltip with a simple asp Panel. Nevertheless I am attaching here the modified pages that seem to work correctly with me - note the difference is only that I am using the Page_PreRender event in the user control and that I replaced your datasources with a programmatic datatable for clarity. I also changed the property fields to Strings, but this is not relevant to the case.

    Kind regards,
    Marin Bratanov
    the Telerik team
    If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed now.
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