服务器端代码执行后，从asp.net代码中调用javascript函数

Question

I have an asp.net button, that when clicked calls a code behind function. The function does some evaluation, and then I want to call javascript from within this asp.net function.

Answer 1

While pranay's answer is correct in the function call, the rest is off, here's hopefully a better explanation:

You can use ClientScript.RegisterStartupScript() to do what you want, like this:

void myButton_Click(object sender, EventArgs e)
{
  var script = "alert('hi');";    
  ClientScript.RegisterStartupScript(typeof(Page), "ButtonAlert", script, true);
}

The format is (type, scriptKey, scriptText, wrapItInScriptTags) .

If you are operating with an UpdatePanel, it's very similar, except you need to use the slightly different ScriptManager.ResgisterStartupScript() . Use the UpdatePanel as the control and type parameters in that case to be safe.

Answer 2

JavaScript is a client side technology.

While I suppose it would be theoretically possible to run the code on the server I don't see what benefit it would give you.

What do you actually want to achieve?