Question

C# Programming using Windows Form


1. Define a variable named isTrue that stores a value of
whether something is true or false. Set this variable
   to the negative. Output this variable to the txtIsTrue textbox.

2. Define a variable named favoriteGame that could store
the name of a game. Set this variable's value to your favorite game. Output this variable to the txtFavoriteGame textbox.

3.. Define a variable named pi that can store real numbers. initialize it to a value of 3.14. Output the value to txtPi

4. Create a control structure that will print out "That's Right"
to a textbox named txtRightOrWrong if isTrue from the 1st problem is positive result and "Nope" if isTrue is not true.

5. Write a loop of your choosing to print out the following
numbers to txtLoop textbox: -1 -3 -5 -7 -9 -13 -15 -17
  

6. Write a nested loop to print out the following to txtNestedLoop:
0
0 1
0 2 4
0 3 6 9
0 4 8 16 32
  

7. Call the method from number 8 and output the result to xtMethodCall textbox.

8. Create a method called Foo that takes an integer from
txtForFoo and returns Bar the amount of times entered.
ex: txtForFoo is 2 the result is "Bar Bar".

9. Add a try catch block in the Foo method to catch the  generic exception and one other exception of your choosing
bonus 5 pts if it applies to the method.

10. Create an array of 2 DateTime objects. Set the first
to the current date and time. Set the second to the
current date. Output both dates with a space between
them to txtDates.

/* ***BONUS***
Time how long it takes from the loading of the program
until the run button finishes running the first time it
is clicked.

Answer 1

Question 1:

Answer :

bool isTrue = false;
txtIsTrue.Text = isTrue.ToString();//display isTrue in the textbox

Explanation :Below screen shows the value in the textbox

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Question 2:

Answer :

string favoriteGame = "NFS";
txtFavoriteGame.Text = favoriteGame;

Explanation :Below screen shows the game name in the variable textbox

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Question 3:

Answer :

double pi = 3.14;
txtPi.Text = pi.ToString();

Explanation :

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Question 4:

Answer :

bool isTrue = true;
if(isTrue)
{
//when isTrue is true
txtRightOrWrong.Text = "That's Right";//set text
}
else
{
//when isTrue is false
txtRightOrWrong.Text = "Nope";
}

Explanation :

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Question 5:

Answer :

//using for loop
for (int i = -1; i >= -17; i=i-2)
{
txtLoop.Text += i + " ";//display text in the txtLoop textbox
}

Explanation :Below screen shows the text in the textbox

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Question 7,8,9:

public static string Foo(int num)
{
string str = "";//declaring variable str
for (int i = 0; i < num; i++)
{
str += "Bar" + " ";//append Bar
}
return str;
}
try
{
xtMethodCall.Text=Foo(int.Parse(txtForFoo.Text)).ToString();//call method
}
catch (FormatException f)
{
MessageBox.Show(f.Message);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}

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