Capturing Javascript.Window.Prompt values in ASPNET

Question

i have this section of code in my ASP.NET web application

string promptBox = "<script language= 'javascript'>"+ "window.prompt('" + "Enter a Valid IP" + "')" + "</script>";

Page.RegisterStartupScript("IP selection",promptBox);

I can't figure a way to capture the value entered by the user in the prompt into my ASP.NET application. I basically want to store this value in a string and access it within my code-behind.

Thanx,
KV

Binu Subi · Answer

Once get that input box prompt you are in client context what ever value the user enters you have access to it in client context. What you can do is to attach a query string parameter to this form and load the form again by submitting it... write a function in your client side (javascript) function askforIP() { var myIP = ; var myQstr = myPage.aspx?q= + myIP; document.forms[0].action = myQstr; document.forms[0].submit(); } change your server side to accept this page load and process also you can now register just the call to this function using registerstartupscript() call. I personaly dont like this convoluted process to validate something or accept a user input. Consider thinking about a more intuitive design.. Cheers

nagabhushan hegde · Answer

HI As far as I anaysed your problemI could say that when you prompt for a value from the user and when user inputs his value assign it to some variable inside javascript function itself. After that just return the value input by user from the function. I think if you could register your button object in .NET in page_load then you can call a javascript function hoping for a return value when the button is clicked.If the function fails then return false so that the execution won't continue in the codebehind. Thnx Bhushan.

Capturing Javascript.Window.Prompt values in ASP,NET