Hi, i'm new using modalpopupextender and i'd like to ask somethings that i can't solve.
I'm working in asp.net c# net framework 4.0 , i made a web form where i need to fill many fields, one of them is "client" (here is my problem) i want to make a click in this field (textbox, button or whatever) and it will open a modal where i want to find a cliente by its name (accesing my database sql) after find it i want to send "primary key" like a parameter to be worked in codebehind and others, i hope you can help guys and i'm here all day to find a answer, thanks for your time and patiente.