Adding validation to text box control

Question

I have a text box and button in as seen in the code below. I need to apply validation such that
tT        The user should not be able to click the button if the user has entered an invalid quantity (i.e. non integer or less than zero).
Quantity:

Lakshmanan Sethu Sankaranarayan · Answer

Please try this link
http://msdn.microsoft.com/en-us/library/ms753962(v=vs.110).aspx

Abhay Shanker · Answer

Check below link, can be helpful
http://codeblitz.wordpress.com/2009/05/08/wpf-validation-made-easy-with-idataerrorinfo/

Jignesh Trivedi · Answer

hi, Try below link, it might help you.
http://www.codeproject.com/Tips/690130/Simple-Validation-in-WPF
http://stackoverflow.com/questions/2079552/wpf-textbox-validation

Joginder Banger · Answer

you can try with the help of java script like this
function test() {
var temp = document.getElementById("Text1").value;
var temp1 = parseInt(temp);
if (temp1 > 0) {
document.getElementById("Button1").disabled = false;
}
else {
document.getElementById("Button1").disabled = true;
}
}