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Question 9: You are developing an ASP.NET Web page that contains input controls, validation controls, and a buttonnamed btnSubmit.
The page has the following code-behind. (Line numbers are included for reference only.)
01 Public Class _Default
02 Inherits System.Web.UI.Page
03
04 Protected Sub SaveToDatabase()
05
06 End Sub
07
08 Protected Sub btnSubmit_Click(ByVal sender As Object,
09 ByVal e As EventArgs) Handles btnSubmit.Click
10
11 End Sub
12
13 End Class
You need to ensure that all data that is submitted passes validation before the data is saved in a
database.
What should you do?
A. Add the following method override.
Protected Overrides Sub OnInit(ByVal e As EventArgs)
MyBase.OnInit(e)
If (Page.IsValid) Then Me.SaveToDatabase()
End Sub
B. Add the following method override.
Protected Overrides Sub OnLoad(ByVal e As EventArgs)
MyBase.OnLoad(e)
If (Page.IsValid) Then Me.SaveToDatabase()
End Sub
C. Add the following method override.
Protected Overrides Sub OnPreRender(ByVal e As EventArgs)
MyBase.OnPreRender(e)
If (Page.IsValid) Then Me.SaveToDatabase()
End Sub
D. Add the following code segment at line 10.
If (Page.IsValid) Then Me.SaveToDatabase()
Correct Answer: D
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