why the parenthesis around the data type?

John Burns

just wondering why this arguments data type has parenthesis around it? here is the code. the part in question is in red.

public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int length = Talker.BlaBlaBla(textBox1.Text, (int) numericUpDown1.Value);
            MessageBox.Show("length is: " + length, "# of times");
        }

also, if its any help, here is the class code that goes with it.:

class Talker
    {
        public static int BlaBlaBla(string thingToSay, int numberOfTimes)
        {
            string finalString = "";
            for (int count = 1; count <= numberOfTimes; count++)
            {
                finalString = finalString + thingToSay + "\n";
            }
            MessageBox.Show(finalString, "text to say");
            return finalString.Length;
        }

10 Replies

Know the answer? Post it — somebody with the same question will find it here.

Subhendu De15y ago
Accepted answer
Basic is

for(int i=0;i<10; i++) that means loop starts from 0 to 10 incremented by 1. Start and end digit, you specify. your thinking is correct.

Also request you to create new thread for new query.

Thanks.....
Suthish Nair15y ago
John,

Now you asking its an Unboxing or not?

Did you refer the msdn i posted, instead of you accepting above answer.

Its unboxing.

If you need more, msdn.
Sam Hobbs15y ago
You cannot select more than one checkbox per thread. When you try to, the checkbox that was checked if any were. Every time you select the checkbox, an email notification is sent to the person that posted the reply. If you then select a different post, then that person will receive notification. Sometimes we receive a dozen notifications that our answer in a thread (one thread) has been accepted, but there is never more than one checkbox selected, not ever.
John Burns15y ago
in the reply i got from you Subhendu:
This is called type casting in .NET or boxing.

Generally it converts the numericDown1.value to int datatype.

Thanks.....

-----------

would this not be Unboxing? ....

thanks
John Burns15y ago
Ok Sam, Subhendu has been great help to me so far though. Almost all posts i create he has an answer for me and hes short and straight to the point.
I still dont get what you were getting at? so when i make a post and i get a number of answers i can only check one box to accept an answer or can i select multiple?
Sam Hobbs15y ago
Note that Subhendu's answer does not answer the question in the original post of this tread. Subhendu suggested that you create a new thread for the new question so that both answers can get credit. It will really help for you to understand that when you check the checkbox that says that you like a post, then the person does get credit. So if you appreciate the help, then it will be appreciated if you check the checkbox whenever you get help. You did check the checkbox for Subhendu's answer about the for loop but you can select only one per thread, so Subhendu does not get ponts for his other help. For this thread, I assume it did not take much time of Subhendu's time to help you but some questions do take a significant amount of time to answer.
John Burns15y ago
I now cant understand how C# knows how many times to run the for loop?

the program is a simple windows user interface with a numerical counter, a textbox and a button. you type a word to the textbox and set the number of times to say and then click the button .... hey presto!

but how does it actually know how many times to loop?

heres what i think, tell me if i am correct:

i run the program, type in a word, setr the numericalUpDown to a number and when i click on the button then arguments i specified in the variable 'length' tells the 'count' in the loop the number of times i want to loop?
Suthish Nair15y ago
explicit conversion happening there.

For more refer msdn, msdn
John Burns15y ago
ahh ok i get it now, thanks for the reply.
Subhendu De15y ago
This is called type casting in .NET or boxing.

Generally it converts the numericDown1.value to int datatype.

Thanks.....

why the parenthesis around the data type?

For more refer msdn, msdn