The questions are related to Visual C#, thank you for the help!

1. What is the difference between a list box and a simple combo box?

Assume that we want to write the code for the following. If the user types a string into the text portion of a combo box named cboNames then as soon as the user types the return key ( key) the program should add that name to the Items list and remove the string from the Text property. How would you finish this method to do so? private void cboNames_KeyPress(object sender, KeyPressEventArgs e)

{

}

2. What does each of the following instructions do?

1. Random rand = new Random();
2. number1 = rand.Next();
3. number = rand.Next(100);
4. number = rand.NextDouble();

3. What is the load event for a form? How is it used in a program?

3. What does each of the following instructions do?

1. StreamWriter outputFile;
2. outputFile = File.CreateText(courses.txt);
3. outputFile.WriteLine(Intro to Computer Science);
4. outputFile.Write(txtDescription.Text);
5. outputFile.Close();

5. What does each of the following instructions do?

1. string studentName;
2. StreamReader inputFile;
3. infile = File.OpenText(Student.txt);
4. studentName = infile.ReadLine();
5. infile.Close();