Why doesn't JavaScript function get called?

Question

I am trying to call my JS function from asp.net code behind but it doesn't work.

 protected void btnSavePrint_Click(object sender, EventArgs e) { 
    try
    {
        //int FormTesting;

        Page.ClientScript.RegisterStartupScript(
        GetType(),
        "MyKey",
        "myFunction();",
        true);

        TestFormNo = ClsTender.InsertAppliedWorks(NitNo, WorkNo, out formno, ContractorID, 
                     Cost.ToDecimal(), bp.LoginMainOfficeID, bp.LoginOrganizationID);
    }

and my jsb function which is in .aspx

<script>
        function myFunction() {
            window.print();
        }
</script>

Adil · Accepted Answer · 2016-07-29 05:44:03Z

2

You are registering the javascript call on click of button that will be called on next load. Instead of registering call to myFunction() in btnSavePrint_Click code behind event. Bind event on in btnSavePrint in Page_Load. Also make sure definition of myFunction exists.

protected void Page_Load(object sender, EventArgs e)
{
    btnSavePrint.Attributes.Add("onclick", "myFunction();");
}

answered Jul 29, 2016 at 5:44

Adil

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Niklaus · Accepted Answer · 2016-07-29 05:53:45Z

2

Try this. See if it works. You might need to import System.Web.UI.Control

ScriptManager.RegisterStartupScript(Me.Page, GetType(Page), UniqueID, "myFunction()", True)

But this code will only register JavaScript function to the browser. As JavaScript is Client-Side Language, it will be registered with this code. Again you have to call this function with some event like

 btnSavePrint.Attributes.Add("onclick", "myFunction();");

edited Jul 29, 2016 at 5:53

answered Jul 29, 2016 at 5:48

Niklaus

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Comments

Hemant · Accepted Answer · 2016-07-29 05:43:59Z

1

Try this:

ScriptManager.RegisterStartupScript(this, GetType(), "YourTitle", 
        "myFunction();", true);

answered Jul 29, 2016 at 5:43

Hemant

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