Passing value from Javascript to ASP.net control

Question

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Hi,

I have a Javascript that I called using the the

ScriptManager.RegisterClientScriptBlock

. The script will generate a Pop-up window where i can browse for the path of the file. When I click the OK button it will call a JS function:

C#

function SelectAndClose() {
            txtValue = document.getElementById('_browseTextBox');

            window.returnValue = txtValue.value;
            window.close();
            return false;
        }

I am quite confused on how I can pass the txtValue variable to the previous page and use the value to display in a textbox..any help is greatly appreciated.

Thanks!

Franco

Posted 24-Jul-12 10:05am

Franco Cipriano

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Comments

ZurdoDev 24-Jul-12 16:12pm

Can you be a little more specific. Your function is getting the value from _browseTextBox and passing it back to the caller. What part are you having trouble with?

Franco Cipriano 24-Jul-12 16:24pm

I don't know how to get the return value from the function..I also tried to use Session in passing the value, but still it won't work.

jkirkerx 24-Jul-12 18:47pm

Well you can't pass a value to the previous page, because it no longer exist.

If your refering to the current page being the previous page, and the popup setting a value in the current page that it's lies upon,

then just get the id of the textbox and set the value.

Franco Cipriano 25-Jul-12 8:33am

Hi,

It will be used by other web pages, so there are other control IDs that will used the value returned by the function..

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NothingToLoose · Answer 1 · 2012-07-24T19:24:00

Rewrite your function this way

JavaScript

function SelectAndClose() {
            txtValue = document.getElementById('_browseTextBox');
        if ((window.opener != null) && (window.opener && !window.opener.closed)) {
               window.opener.InvokeParent(txtValue.value);
        }
            window.close();
            return false;
        }

Now Write Following Function in script block of .aspx of Parent Page

XML

<script type="text/javascript">
    function InvokeParent(varValue){
      if(varValue != ""){
        // Write Required Statements to perform whatever operation
       }
    }
</script>