I want to use a javascript function inside a c# function
protected void button1_Click(object sender,EventArgs e){
//javascript function call ex.
/*
b
If you're trying to add JavaScript to your page from asp.net, you can use the ClientScript class.
string script = "function update() { var result = confirm(\"Do you want to delimit the record?\") if (result) {return true; } else { return false; } }";
ClientScript.RegisterClientScriptBlock(this.GetType(), "someKey", script, false);
If you're trying to call (client side) JavaScript functions from your asp.net code behind, then absolutely not. When the page posts and your C# is run, any JavaScript that was on the page no longer exists.