Calling JavaScript Function From CodeBehind

Question

Can someone provide good examples of calling a JavaScript function From CodeBehind and Vice-versa?

Answer 1

You may try this :

Page.ClientScript.RegisterStartupScript(this.GetType(),"CallMyFunction","MyFunction()",true);

Answer 2

Try This in Code Behind and it will worked 100%

string script = "window.onload = function() { YourJavaScriptFunctionName(); };";
ClientScript.RegisterStartupScript(this.GetType(), "YourJavaScriptFunctionName", script, true);

Answer 3

You can use literal:

this.Controls.Add(new LiteralControl("<script type='text/javascript'>myFunction();</script>"));

Answer 4

You can expose C# methods on codebehind pages to be callable via JavaScript by using the ScriptMethod attribute.

You cannot call JavaScript from a CodeBehind - that code exists solely on the client.

Answer 5

IIRC Code Behind is compiled serverside and javascript is interpreted client side. This means there is no direct link between the two.

What you can do on the other hand is have the client and server communicate through a nifty tool called AJAX. http://en.wikipedia.org/wiki/Asynchronous_JavaScript_and_XML

Answer 6

ScriptManager.RegisterStartupScript(Page, GetType(), "JavaFunction", "AlertError();", true);

using your function is enough