Question

I have a textbox called txtNote. When I enter some text I click a save button and contents are written the database. I now want to clear the textbox value, so I had been using txtNote.text = “” but it no longer works as the save button is now part an update panel trigger.

E.g.

                <asp:TextBox ID="txtNote" runat="server" CssClass="textarea full" Rows="4" TextMode="MultiLine"></asp:TextBox>

                    <asp:Button ValidationGroup="valgroup1" ID="btnNoteSave" runat="server" Text="Save"/>
                </div>
            </div>
            <div style="width: 100%; float: left">
                <asp:UpdatePanel ID="pnlNotes" runat="server">
                    <ContentTemplate>
                        <div id="content_container" style="margin-top: 85px">
                            <asp:Label ID="lblNotes" runat="server"></asp:Label>
                        </div>
                    </ContentTemplate>
                    <Triggers>
                        <asp:AsyncPostBackTrigger ControlID="btnNoteSave" EventName="click" />
                    </Triggers>
                </asp:UpdatePanel>
            </div>

Code behind:

Protected Sub btnNoteSave_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnNoteSave.Click
    If txtNote.Text <> "" Then
        Dim newnote As New note()
        newnote.LoggedBy = Session("user_id")
        newnote.Note = txtNote.Text
        newnote.Create()
        txtNote.Text = "" 'this is not working.
        Dim note As New note()
        lblNotes.Text = note.shownotes(Val(txtTicketID.Value))

    End If

End Sub

I’m guessing it’s not working as it’s not able to do proper postback as an update panel is involved.

Any ideas how to get round this probably simple prob?

Thanks,

Answer 1

Just wrap the TextBox in its own UpdatePanel. Make sure to either set the UpdateMode to Always, or add the Button to the Triggers of the new UpdatePanel