Databind problem RRS feed

  • Question

  • User2097455209 posted

    I can't seem to get a simple .NET application to recognize a databound control.  Basically I have a .NET application, this time in Visual Basic, with an Entity build from an existing database.  When I have tags like the following, I can't get it to do anything.

                    <asp:TextBox ID="tbServiceRequestDate" runat="server" Text='<%# Bind("ServiceRequestDate") %>'></asp:TextBox>

    Code behind:

        Sub Page_Load(ByVal Sender As System.Object, ByVal e As System.EventArgs)
            If Not Page.IsPostBack Then
            End If

        End Sub

        Sub SubmitButton_Click(sender As Object, e As EventArgs) Handles SubmitButton.Click
        End Sub

    The Entity is basically EHSShipping.

    I get this error:

      Message=Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.
       at ASP.default_aspx.__DataBindingtbServiceRequestDate(Object sender, EventArgs e) in C:\dev\EHSShipping\EHSShipping\Default.aspx:line 14
       at _Default.Page_Load(Object Sender, EventArgs e) in C:\dev\EHSShipping\EHSShipping\Default.aspx.vb:line 7

    What I'm trying to do is databind the controls as text boxes and select boxes (eventually, a radio button or a checkbox), and have a submit button that takes all the form data and updates the database through the entities.  Once I get that working, then I'm going to build a grid control that shows all the various forms as individual records in the system that can be selected and viewed.

    I figure once I get the TextBox to work right, I can do the other controls pretty easy, however, right now I'm having a hard time getting that one TextBox to update the database on submit.  Keep in mind there is an ID that is unique in the database, but I was assuming the Entity Framework handles that automatically and just inserts the rows as the columns are referenced in the Bind commands...

    Please advise...

    Wednesday, February 17, 2021 8:18 PM

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