Which property of the KeyPress procedure’s e parameter is used to determine the key pressed by the user?
Which property of the KeyPress procedure’s e parameter is used to determine the key pressed by the user?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Which property of the KeyPress procedure’s e parameter is used to determine the key
pressed by the user?
Expert Solution
Step 1
Property used to determine the key pressed by the user:
- If a key is pressed within a control (i.e. the control has been focused), then the KeyPress event will occur.
- When a user is pressing a key on a control, then the KeyPress event occurs.
Step 2
- The pressed key is sent to the KeyPress event’s e parameter.
- So, if the user presses a key, then the pressed key can be determined by using e parameter’s KeyChar property.
- The format to determine the pressed key is given below:
e.KeyChar = key_Value
- The If statement to determine the pressed “$” key is given below:
If e.KeyChar = “$” Then
- In the above statement, the “e.KeyChar” represents the key entered by the keyboard.
- The “$” symbol is used to represent the dollar.
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