Programming with Microsoft Visual Basic 2015 (MindTap Course List)
7th Edition
ISBN: 9781285860268
Author: Diane Zak
Publisher: Cengage Learning
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Expert Solution & Answer
Chapter 3.LC, Problem 1RQ
Program Description Answer
When the content of a textbox is changed, the “TextChanged” event occurs.
Hence, correct answer is option “C”.
Expert Solution & Answer
Explanation of Solution
TextChanged Event:
- If a control’s text property contents are getting changed, then the “TextChanged” event occurrs.
- The “TextChanged” event can occur by the following ways:
- When the user is entering or deleting the text content on a controls text property.
- When the application code assigns or removes the text content into the controls text property.
Example:
'Procedure code1
Private Sub btnAsign_Click(ByVal sender As Object,ByVal e As System.EventArgs) Handles btnAsign. Click
'The button click event assigns the text to 'the text box control
txtT1.Text= “Karlson”
End Sub
'Procedure code2
Private Sub txtT1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtT1.TextChanged
'The label box text content is cleared when 'the text change event is occurred
lblTotalPhones.Text = string.Empty
End Sub
In the btnAsign_Click procedure, the string value “Karlson” is assigned to the text box control txtT1.
- As the text content is assigned to the text control, the TextChanged event occurs in the text box control txtT1.
- As a result, txtT1_TextChanged procedure is executed, and this event clears the text content from the label lblTotalPhones.
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Chapter 3 Solutions
Programming with Microsoft Visual Basic 2015 (MindTap Course List)
Ch. 3.LA - Prob. 1RQCh. 3.LA - Prob. 2RQCh. 3.LA - Which of the following statements declares a...Ch. 3.LA - Prob. 4RQCh. 3.LA - Prob. 5RQCh. 3.LA - Which of the following declares a procedure-level...Ch. 3.LA - Prob. 7RQCh. 3.LA - Prob. 8RQCh. 3.LA - Prob. 9RQCh. 3.LA - Prob. 10RQ
Ch. 3.LA - Prob. 11RQCh. 3.LA - A static variable has the same...Ch. 3.LA - A procedure needs to store a salespersons name and...Ch. 3.LA - Prob. 2ECh. 3.LA - Prob. 3ECh. 3.LA - Prob. 4ECh. 3.LA - Prob. 5ECh. 3.LA - Prob. 6ECh. 3.LA - Prob. 7ECh. 3.LA - Prob. 8ECh. 3.LA - Prob. 9ECh. 3.LA - Prob. 10ECh. 3.LA - Prob. 11ECh. 3.LA - Prob. 12ECh. 3.LA - Prob. 13ECh. 3.LA - Prob. 14ECh. 3.LA - Prob. 15ECh. 3.LA - Prob. 16ECh. 3.LA - Prob. 17ECh. 3.LA - Prob. 19ECh. 3.LB - Prob. 1RQCh. 3.LB - Prob. 2RQCh. 3.LB - Prob. 3RQCh. 3.LB - Prob. 4RQCh. 3.LB - Prob. 5RQCh. 3.LB - Prob. 6RQCh. 3.LB - Prob. 7RQCh. 3.LB - Prob. 8RQCh. 3.LB - Prob. 9RQCh. 3.LB - Prob. 10RQCh. 3.LB - Prob. 1ECh. 3.LB - Prob. 2ECh. 3.LB - Prob. 3ECh. 3.LB - Prob. 4ECh. 3.LB - Prob. 5ECh. 3.LB - Prob. 6ECh. 3.LB - Prob. 7ECh. 3.LB - Prob. 8ECh. 3.LB - Prob. 9ECh. 3.LB - Prob. 11ECh. 3.LB - Prob. 12ECh. 3.LC - Prob. 1RQCh. 3.LC - Prob. 2RQCh. 3.LC - Prob. 3RQCh. 3.LC - Which of the following statements declares a...Ch. 3.LC - Prob. 5RQCh. 3.LC - Prob. 2ECh. 3.LC - Prob. 3ECh. 3.LC - Prob. 4ECh. 3.LC - Prob. 5ECh. 3.LC - Prob. 6ECh. 3.LC - Prob. 7ECh. 3.LC - Prob. 8ECh. 3.LC - Prob. 9ECh. 3.LC - Prob. 10ECh. 3.LC - Prob. 11E
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