On button click fire javascript function from code behind

Question

3.00/5 (2 votes)

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Hi All,

How can i fire a javascript function at the end of a asp button click event.

My code as follows:

protected void btnexamsubmit_Click(object sender, EventArgs e)
{
//here some server codes
.
.
//End server code

//here Fire javascript function 'ShowConfirm'

}

Java Scrit: in ma .aspx

XML

<script type="text/javascript" language="javascript">
      function ShowConfirm()
      {
      confirm("Welcome");
      }
   </script>

Does this is a better flow of code or any other way to do the Same.I am very new to javascript
Please kindly assist.

Thank you in advance.

Best Regards,

Shafeequl

Posted 16-Jun-13 20:25pm

Shafeequl

Updated 16-Jun-13 20:32pm

v2

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_Amy · Answer 1 · 2013-06-16T20:37:00

Solution 1

You can call a javascript function from code behind by using ScriptManager Class[^].

C#

protected void btnexamsubmit_Click(object sender, EventArgs e)
{
    //here some server codes
    //....
    //End server code
    //..
    //here Fire javascript function 
    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "Script1", "ShowConfirm();", true);
}

But javascript confirm box will not work in this case. For server side confirmation you can try one of the following:
Server Side (Code Behind) Yes No Confirmation Message Box in ASP.Net[^]
A Simple ASP.NET Server Control: Message Box & Confirmation Box[^]

Also check a similar thread : Confirmation Message Box in asp.net code behind[^]

--Amit

Posted 16-Jun-13 20:37pm

_Amy

Comments

Shafeequl 17-Jun-13 2:47am

Thanks for your replay sir
does alert or prompt box work with the above code?

_Amy 17-Jun-13 2:54am

Yes sure.. It'll work..

Shafeequl 17-Jun-13 3:12am

changed 'confirm' to 'alert' but doesnt fire the javascript,no error

_Amy 17-Jun-13 3:15am

Try this:
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "Script1", "alert('Hii, I am an alert box');", true);

Shafeequl 17-Jun-13 4:25am

sir can u pls give me some more references about this...The above references seems unusefull to ma case..please help me..

Shafeequl 17-Jun-13 4:25am

i mean references about ma ques

_Amy 17-Jun-13 4:48am

Refer the links below:
Asp.net show alert message from code behind using javascript[^]
Dsplay Alert Message in ASP.Net from code behind using C# and VB.Net[^]
Display alert message[^]
--Amit

Mahesh Bailwal · Answer 2 · 2013-06-16T20:39:00

Solution 2

Please refer below code

protected void btnexamsubmit_Click(object sender, EventArgs e)
     {
         string script = "<script>ShowConfirm()</script>";
         ClientScript.RegisterStartupScript(this.GetType(),"", script);
     }

Posted 16-Jun-13 20:39pm

Mahesh Bailwal

Masoom Mir · Answer 3 · 2013-06-16T23:31:00

first take script manager on your aspx page

XML

<asp:ScriptManager ID="ScriptManager1" runat="server">
  </asp:ScriptManager>

after use the following server side code

C#

protected void btnexamsubmit_Click(object sender, EventArgs e)
{
//here some server codes
.
.
//End server code

//here Fire javascript function 'ShowConfirm'

   ScriptManager.RegisterStartupScript(this.Page, Page.GetType(), "test", "ShowConfirm();", true);

}

ErBhati · Answer 4 · 2013-06-18T03:01:00

Solution 6

ScriptManager.RegisterStartupScript(this.Page, Page.GetType(), "test", "ShowConfirm();", true);

Posted 18-Jun-13 3:01am

ErBhati

amit29391 · Answer 5 · 2013-06-16T20:40:00

Solution 3

In your code behind where you want to fire javascript write the following line

Response.Write(@"<script language='javascript'>Confirm('Welcome');</script>");

Posted 16-Jun-13 20:40pm

amit29391

Chintan Desai1988 · Answer 6 · 2013-06-18T00:44:00

Solution 5

Create a javascript function:

function GetData()
{
alert("hello......!!!");
}

now, write code on button click event:

protected void Button1_Click(object sender, EventArgs e)
{
ScriptManager.RegisterStartupScript(Page, Page.GetType(), "Click", "GetData();", true);
}

Posted 18-Jun-13 0:44am

Chintan Desai1988