Chapter 8, Problem 5PP

Program Plan Intro

Most frequent character

Program plan:

Design the form:

• Place two label box controls on the form, and change its name and properties.
• Place one text box control on the form, and change its name and properties to get the string from user.
• Place one command button control on the form, and change its name and properties to display the most frequent character in a string into label box.

In code window, write the code:

Program.cs:

• Include the required libraries.
• Define the namespace “FrequentChar”.
  • Define a class “Program”.
    • Define a constructor for the class.
    • Define required functions to run “Form1”.

Form1.cs:

• Include the required libraries.
• Define namespace “FrequentChar”.
  • Define a class “Form1”.
  • In btnFind() method,
    • Declare the required variables.
    • Determine the most frequent character in a string.
    • Display the most frequent character in a label box.
  • Close the application.

Form Design:

View the Form Design in IDE.

Set the Form Control properties in Properties window as follows:

Object	Property	Setting
Form1	Text	Program8_5
label1	Text	Enter a string:
textBox1	Text	(Empty)
lblResult	Text	(Empty)
btnFind	Text	Find it

• Add two label box controls to the form from Toolbox.
• Add one text box control to the form from Toolbox.
• Add one command button control to the form from Toolbox.