Appendix A. Exercise Solutions
Create a Windows Application with a Textbox and Button control that will display whatever is typed in the text box when the user clicks on the button.
To display the text from a text box on a form when the user clicks the button, you add code as highlighted here to the button's
Private Sub btnDisplay_Click(ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles btnDisplay.Click 'Display the contents of the text box MessageBox.Show(txtInput.Text, "Exercise 1") End Sub
Create a Windows application with two button controls. In the
Clickevent for the first button, declare two
Integervariables and set their values to any number that you like. Perform any math operation on these variables and display the results in a message box.
Clickevent for the second button, declare two
Stringvariables and set their values to anything that you like. Perform a string concatenation on these variables and display the results in a message box.
The first part of this exercise requires you to declare two
Integervariables and set their values and then to perform a math operation of these variables and display the results in a message box. The variables can be declared and set as:
'Declare variables and set their values Dim intX As Integer = 5 Dim intY As Integer = 10
To perform a math operation and display the results can be performed as:
'Multiply the numbers and display the results MessageBox.Show("The sum of " & intX.ToString ...