How to Call javascript function with argument from code behind ASP.NET ,C#?

Question

I want to pass some argument to javascript function from code behind. My Javascript function as follow. how to send arg to this func. from server side code.

 function addTab(tabid,tablist) {
            //to Find the Panel
            var Panel = $find("<%=RadPanelBar2.ClientID %>");
            //To find the Tab Strip
            var tabStrip = Panel._findItemByValue("QueueGridPanel").findControl("RadTabStrip2")
            tabStrip.get_tabs().clear();

            var newTabNames = "MyTab1,MyTab2,MyTab3";
            //var newTabNames = document.getElementById("ctl00_GridContentPlaceHolder_hfTabs").value;

            var TabsNames = newTabNames.split(',');
            var i = 0;
            while (i < TabsNames.length) {
                var ntab = new Telerik.Web.UI.RadTab();
                tabStrip.get_tabs().add(ntab);
                ntab.set_text(TabsNames[i]);
                i++;
            }
            return false;
        }

I don't see where you are using the parameters in the function. How do you expect them to be used and how is the function invoked? — tvanfosson
– tvanfosson, Commented Aug 13, 2010 at 14:05
I want to use this variable,now i use sample hard coded values. — Ramakrishnan
– Ramakrishnan, Commented Aug 13, 2010 at 14:08
Can you expand on your question? Are one of the arguments in this function supposed to be passed from the server? — Wallace Breza
– Wallace Breza, Commented Aug 13, 2010 at 14:09

NakedBrunch · Accepted Answer · 2010-08-13 14:30:14Z

Check out RegisterClientScriptBlock at MSDN. You can use it to insert Javascript after a postback.

String csName = "myScript";
Type csType = this.GetType();

// Get a ClientScriptManager reference from the Page class.
ClientScriptManager cs = Page.ClientScript;

// Check to see if the client script is already registered.
if (!cs.IsClientScriptBlockRegistered(csType, csName))
{
  StringBuilder csText = new StringBuilder();
  csText.Append("<script type=\"text/javascript\"> ");
  csText.Append("addTab(" + myTabID + ", " + myTabList + "); </");
  csText.Append("script>");
  cs.RegisterClientScriptBlock(csType, csName, csText.ToString());
}

The RegisterClientScriptBlock method inserts the client-side script immediately below the opening tag of the Page object's element.

Joel Etherton · Accepted Answer · 2010-08-13 14:15:52Z

0

For the uses which you're describing here, I use an asp:Literal control and pump in global javascript declarations.

<script type="text/javascript">
    var FirstNameId = "<%=Me.txtFirstName.ClientID%>";
    var MiddleNameId = "<%=Me.txtMiddleName.ClientID%>";
    var LastNameId = "<%=Me.txtLastName.ClientID%>";
</script>

Then when I need them later on, they are available to the entire page.

answered Aug 13, 2010 at 14:15

Joel Etherton

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