Good day,

I am trying to build a messagebox into my ASP.NET page. I want to be abel to ask the user when they click on the Add button that should they not have entered in all the details whether they want to continue or not, Yes / No.

I have tried using RegisterClientScriptBlock("OnLoad", my script here) but this only seems to word with JavaScript and with the alert option in Javascript I do not know of a Yes / No type of alert.

Can anyone help me please?