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On ASP.net Button click populate a ASP.Net textbox using VB Script

Answer 1

A:

You can refer to the textbox's ID by modifying your VBScript to include something like this:

<script type="text/vbscript" >
    sub GetSignData()
        ' assign SignData
        ' SignData=window.document.IntegriSign1.GetSignData()

        set txtIntegri = document.getElementById("<%= txtIntegri1.ClientID %>")
        txtIntegri.value = SignData
    end sub
</script>

Assign that to a variable to reference the textbox then assign the desired value to it.

EDIT: as Joel mentioned, your textbox's current visibility prevents any access to it. For the above to work you need to show the textbox.

Here's my working example. One difference is in the onClick event I had to remove the semi-colon ";" to get it to trigger. If you start a new project and drop this in, excluding the "<%@ Page..." declaration at the top, you should be able to see the textbox being updated.

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
<html xmlns="http://www.w3.org/1999/xhtml"&gt;
<head runat="server">
    <title></title>
    <script type="text/vbscript">
        sub GetSignData()
            signData = "Hello, StackOverflow!"
            set myTextbox = document.getElementById("<%= Textbox1.ClientID %>")
            myTextbox.value = signData
        end sub
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:TextBox ID="Textbox1" runat="server" Text="Hello, World!" />
        <input type="button" id="btnAccept" name="btnAccept" runat="server" value="Accept " onclick="GetSignData()" />
    </div>
    </form>
</body>
</html>

Ahmad Mageed 2009-09-08 16:08:50

Hi, When I add this I am getting an errorwindow.document.hdIntegriSign1.clientID.value=SignDataObject doesn't suppoert widow.document.hdIntegriSign1 property or method

acadia 2009-09-08 20:24:12

@acadia: please update your question with your latest code so we can help you better. I've updated my post to show how to set the txtIntegri1 textbox. The error you mentioned seems to be part of how you get the SignData value.

Ahmad Mageed 2009-09-08 21:20:15

Ahmad Mageed, I have updated the code and the error message I am able to get the SignData value correctly but when I try to set the value for the textbox it is throwing object required error. Thanks

acadia 2009-09-09 14:20:52

@acadia: I accidentally omitted the double quotes from the getElementById() method. I updated my code to show this and that will fix the object required error. Change it to this (notice the double quotes): set txtIntegri = document.getElementById("<%= txtIntegri1.ClientID %>")

Ahmad Mageed 2009-09-09 16:48:44

Other than that I would suggest considering using Javascript instead of VBScript if possible to be compatible across browsers.

Ahmad Mageed 2009-09-09 16:49:54

Sorry Ahmad Mageed. It still doesn't work. I updated the code. It directly displays the message instead of populating the textbox. The reason I am using this vbscript is becos of the activex control I am using for signing that that is the only way I can use this.

acadia 2009-09-09 20:23:23

@acadia: I've updated my post with my working example that I've tested with. Try it out and it should work for you. Then compare it with what you have and see if there are any adjustments needed that could get your code working. If it still doesn't work then please update your question with your full page, or a small - but complete - sample for others to reproduce the problem.

Ahmad Mageed 2009-09-09 21:15:07

Answer 2

+2 A:

You can't. The Visible="false" property on your textbox means that it isn't rendered to html at all. As far as your browser is concerned, it doesn't exist.

But putting that aside (assuming you have other code that corrects this), you can reference the ID of the control using the .ClientID property as Ahmad Mageed suggests.

Joel Coehoorn 2009-09-08 16:09:26

Good catch :) ... 15 chars

Ahmad Mageed 2009-09-08 16:11:23

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On ASP.net Button click populate a ASP.Net textbox using VB Script

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