ASP.net c# Avoid open the same window twice

Question

Hello, How to prevent that same form/window will not open in another tab/window in asp.net application.     Thanks.

Nigel Fernandes · Answer

Two Options:     -Use Javascript modal window OR
-Use a global variable and set it to true when you open the window and then set it to false when it returns some value.

sudipta sanyal · Answer

I thing You need this
function onButtonClick() { window.open("http://www.google.com", "My popUp", "", ""); //My popUp IS THE PAGE NAME IF YOU CLICK MULTIPUL TIME IN THIS BUTTON NO NEW PAGE WILL OPEN ALREADY OPEN PAGE IS REFRESHED }

Gaurav Kumar · Answer

I am working on ERP , so my problem is if a web form open in any browser, will not open same browser another tab, i want to prevent next tab to avoid same form in multiple tabs.

Khaja Moizuddin · Answer

Can you explain the question clearly or can you share the code?