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[Solved] Call JavaScript from server side

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answered on 24 May 2013, 02:43 AM

Hi Robert,

It is possible to execute a JavaScript from server-side code. In order to do this, make sure that the code is actually inserted on the page – the easiest way is to put a simple alert() and check if it is fired. Also the controls are rendered on the page before referencing them in your JavaScript function. Please have a look at the following sample code.

C#:

protected void RadButton1_Click(object sender, EventArgs e)

{

string scriptstring = "alert('JavaScript Executed');";

ScriptManager.RegisterStartupScript(Page, Page.GetType(), "JavaScript", scriptstring, true);

}

Thanks,
Shinu.

answered on 27 May 2013, 11:51 AM

Hi Robert,

Please have a look at the following code I tried which works fine at my end. For the JavaScript to work properly, it should be placed inside the html body as follows.

ASPX:

<head runat="server">

<title></title>

<script type="text/javascript">

function myJavaScript() {

alert("JavaScript Executed");

}

</script>

</head>

<body>

<form id="form1" runat="server">

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

</asp:ScriptManager>

<div>

<telerik:RadButton ID="RadButton1" runat="server" Text="Click" OnClick="RadButton1_Click">

</telerik:RadButton>

<asp:Label ID="Label1" runat="server"></asp:Label>

</div>

</form>

</body>

C#:

protected void RadButton1_Click(object sender, EventArgs e)

{

Label1.Text = "<script type='text/javascript'>myJavaScript()</script>";

}

Thanks,
Shinu.