I have tried the codes but none of it is working,i also did not see the input mark and validation rule in the property window.

Thanks for the reply,what if i want to limit the textbox characters to only integers,that is i only want integer numbers to be entered in the textbox.How will i do that?

I am currently learning C# programming and i am using visual studio 2008.I created two textboxes and a submit button,i want a messagebox to popup telling the user to enter a value in the textbox whenever the submit button is clicked with the texboxes empty.I have tried to solve this but am encontering errors.The two error messages are "cannot implicitly convert type bool to int" and "operator '<' cannot be applied to operands of type int and bool".This is my code,please it might not be well arranged beacause am typing it with my phone.


Private void button1_click(object sender, eventargs e)
{
int answer=10;
bool start=false;
bool end=false;

start=int.tryparse(textbox1.text, out answer);

end=int.tryparse(textbox2.text,out answer);

if (!start)
{
messagebox.show("enter numbers in the textboxes";
}
else
{
for(int i=start; i<end; i++)
{
answer=answer*i;

listbox1.items.add(i+"*"+answer+"="+answer.tostring());
}
}.

Thanks in advance

Please can anyone give me a link where i can download a comprehensive tutorial on VB.net and C#? I tried to google it but the ones i got were nt explanatory enough.Thanks.

What do you expect her to use,her legs?

Send it to my account!!! mtchew

I refer to myself as a web programmer while i dont know anything about coding.I work with IDEs evrytime.So programmers in the house,what is your take on this because sometimes i see myself as a lazy programmer.

Pls can anybody give me a link to download joomla for free?

Please i need help on how to develop a user's profile using dreamweaver with PHP MYSQL.I am very new in web development and so i am not writing any code to design the application but i am rather using dreamweaver

Some1 pls help!!!

I dont understand why Nigerians are so crazy about blackberry,correct me if i am wrng but i feel the only special feature that blackberry phones have is the blackberry messenger nothing more.If you have a blackberry in Nigeria then people see you as a big person,what is so special about the phone,can anybody help me out here?