How to submit a web user control with javascript?

Question

0.00/5 (No votes)

See more:

How can I submit a web user control with javascript (not attached to a button)?

If I do it like form1.submit() and the page has multiple controls I think it will make everything postback.

Does anyone know the syntax for something like WebUserControl.Submit() ?

Thanks

Posted 7-Mar-11 10:14am

Guerrilla123

Add a Solution

4 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

rajivpande86 · Answer 1 · 2011-03-07T11:40:00

Solution 1

Before going a step ahead, let me warn you first only that when it will be a postback, it will be the Page_Load of .aspx page having that user control which will fire first and then the Page_Load of that particular usercontrol (.ascx) of your interest.

If you are okay with this, then just let me know at what event do you want the submit action of user control through javascript?

Posted 7-Mar-11 11:40am

rajivpande86

Comments

fjdiewornncalwe 8-Mar-11 16:08pm

OP Comment moved from answer:
Thanks for the reply Rajiv.

Yes thats sounds fine.

Basically the reason I need this functionality is someone signing up to one of my lists.

Here is flow:

1. user signs up and clicks button
2. in my code behind I check to see if they already signed up, and if they have I output a Javascript Confirm() message asking if they want the confirmation email re-sent.
3. if they answer yes then then the javascript will alter a hidden field on the form to let my codebehind know what is going on and then submit the form automatically (this is the bit I need this code for).

Alternatively if there is an easier way to capture the response from a yes/no box then that will be good also Smile | :)

Albin Abel · Answer 2 · 2011-03-07T16:43:00

The fact that user control is again a control. Posting/ submitting is for a form. User control is within a form. So it is not posting.

If you want to update data in the user control then think of update panel, the ajax way in asp.net

In your case, after the user click once user clicks the sign up button, verify is he already sign up. If already sign up then in the page load event execute a javascript using the ClientScript.RegisterStatupScript function. From the javascript you can set the hidden field.

For RegisterStartupScript function refer

http://msdn.microsoft.com/en-us/library/system.web.ui.page.registerstartupscript.aspx[^]

Guerrilla123 · Answer 3 · 2011-03-08T10:44:00

I found the solution in a guide, sample code was in VB so here is my c# translation:

Put this in pageload:

C#

PostBackStr = Page.ClientScript.GetPostBackEventReference(this, "ConfirmedResend");

string eventArg = Request["__EVENTARGUMENT"];
if (Page.IsPostBack)
{
    if (eventArg == "ConfirmedResend")
    {
        Response.Write("It works"); // code goes here that I want to run triggered from JavaScript
    }
}

Then on the page put this:

XML

<script type="text/javascript" language="javascript">
function doPostB()
    {
    <%= PostBackStr %>;
    }
</script>

Then just trigger doPostB() and it will postback and run code inside the if() statement.

AspDotNetDev · Answer 4 · 2011-03-08T10:58:00

It sounds like you want to postback only a portion of the page using JavaScript. According to this page, you can do that like so:

ASP.NET

<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:UpdatePanel runat="server" ID="UpdatePanel1" OnLoad="UpdatePanel1_Load">
  <ContentTemplate>
    <asp:Label runat="server" ID="Label1" />
  </ContentTemplate>
</asp:UpdatePanel>

The UpdatePanel is required to postback only a portion of the page. The ScriptManager is necessary to use any AJAX stuff (in this case, the UpdatePanel). The Label is for demonstration purposes.

HTML

<div id="Container" onclick="__doPostBack('UpdatePanel1', '');">

That shows how to make a postback for just one UpdatePanel from JavaScript. In this case, it is initiated from a click event.

VB.NET

protected void UpdatePanel1_Load(object sender, EventArgs e)
{
  Label1.Text = DateTime.Now.ToString();
}

That shows how you can use server-side code to update the client during your UpdatePanel postback.

How to submit a web user control with javascript?

4 solutions

Solution 1

Solution 3

Solution 5

Solution 6

Add your solution here

Preview 0