how do i code event handler in vb.net

Question

0.00/5 (No votes)

See more:

i need a way to code around an event such as a user entered something in a text and when they press enter or click an event should happened that will validate the user input and save it to the spreadsheet

Posted 11-May-11 4:04am

Rendani.Nk

Add a Solution

4 solutions

Solution 1

Drop a button on, double click the button and VS will add the Click handler for you and take you to the code
You can then validate and save according to your validation rules, whatever they happen to be.

Posted 11-May-11 4:09am

OriginalGriff

Comments

Rendani.Nk 11-May-11 10:39am

ok,cool but is the way to code this event without having to click on a button, but the textbox maybe and just process everthing?

Solution 2

Google[^] is your friend. Here's[^] the first result and here's[^] the second. Both appear, at a glance, to be helpful.

Posted 11-May-11 4:10am

Marc A. Brown

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Dave Kreskowiak · Accepted Answer · 2011-05-11T04:12:00

Solution 3

You haven't noticed the Validating event[^] of the TextBox, have you?

Posted 11-May-11 4:12am

Dave Kreskowiak

Аslam Iqbal · Accepted Answer · 2011-05-11T04:21:00

it may help you to create events....

VB

Public Class Form1
    Private WithEvents ED, ed2 As New EventDemo

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        ED.sampleOparation("1st object event")
        AddHandler ed2.sampleevent, AddressOf ED_sampleevent
        ed2.sampleOparation("2nd object event")
    End Sub

    Private Sub ED_sampleevent(ByVal sender As Object, ByVal e As EventDemo.EventArg) Handles ED.sampleevent
        MsgBox(e.myval)
             '''Apply your validation rule here
    End Sub
End Class



Public Class EventDemo
    Public Event sampleevent(ByVal sender As Object, ByVal e As EventArg)
    Public Sub sampleOparation(ByVal sometext As String)
        Dim e As New EventArg
        e.myval = sometext
        RaiseEvent sampleevent(Me, e)
    End Sub
    Public Class EventArg
        Inherits EventArgs
        Public myval As String

    End Class
End Class