[RESOLVED] How to display numbers from textbox objects to labels.

[Bilbo Bagins]

I have a textbox where a person inputs a phone number and have it where, with the click of a button, a label will display a message saying "Phone number is: " but when it comes up as blank.

Dim intPhoneNumber As String
intPhoneNumber = txtPhone.Text
lblResults.Text = "Phone Number Is: " & intPhoneNumber

[jmcilhinney]

The only explanation is that, when that code is executed, the specified TextBox is empty. Either you're referring to the wrong TextBox or you're executing the code at the wrong time.

On an unrelated note, I hate Hungarian Notation at the best of times but if you don't use it properly then it's worse than useless. Why do you have A String variable with an "int" prefix? If you're not going to use the proper prefix for the type then don't use prefixes at all. Otherwise your code actually becomes misleading.

[Bilbo Bagins]

Sorry, I am new to VB coding and trying to figure it out.

[jmcilhinney]

I'd suggest setting a breakpoint on that code, which you can do with the F9 key. That will show you when it gets executed. If it does get executed at the right time, you can then test the contents of that TextBox at the time.

[paulg4ije]

Where do run that code? It needs to be in the click event of your button.

[Bilbo Bagins]

So the program I'm running displays text box's for the user to input information and when the submit button is clicked it displays that information. I just need to know how to display numbers that are inputted to display in the message.

 Protected Sub btnSubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnSubmit.Click

        Dim strFirstName As String
        Dim strLastName As String
        Dim strEmail As String
        Dim intLabNumber As Integer
        Dim intStationNumber As Integer
        Dim intPhoneNumber As String

        strFirstName = txtFname.Text.Trim
        strLastName = txtLname.Text.Trim
        strEmail = txtEmail.Text.Trim
        intPhoneNumber = txtPhone.Text



        lblResults.Text = "An order has been placed for: " & strFirstName & " " & strLastName & "<br>" _
        & "Email Address: " & strEmail & "<br>" _
        & "Phone Number: " & intPhoneNumber & "<br>" _
        & "Lab Number " & intLabNumber & " and station Number " & intStationNumber

    End Sub

[Shaggy Hiker]

I edited your post to add [CODE][/CODE] tags, which makes the code more readable. You can do this by pressing the # button and pasting the code between the resulting tags.

<br> would be an HTML element, which makes me wonder if this whole thing is part of an ASP.NET question, in which case it isn't really in the right forum. However, you may well have at least one problem. A person entering a phone number is entering a string, not an integer. You have that string being implicitly converted to an integer, but that won't necessarily work. If the user enters spaces, hyphens, or parenthesis, all of which may happen in a phone number, then that implicit conversion will crash with an Invalid Conversion Exception. You need the phone number to be a string. If you want to validate it, use RegEx for that, but leave it a string, or else you will force the user to enter as you want...or crash.

[Bilbo Bagins]

Thanks!! That was extremely helpful! Everything works fine now.

[jmcilhinney]

Shaggy's post proves what I said earlier: your code is misleading. Shaggy is under the impression that the text entered by the user is being implicitly converted to an Integer because of the very fact that the variable you assign it to is named as though it is type Integer but it is not. I already pointed that out and yet you haven't changed your code and now exactly what I said would happen has happened. Look at your own code:

Dim strFirstName As String
Dim strLastName As String
Dim strEmail As String
Dim intLabNumber As Integer
Dim intStationNumber As Integer
Dim intPhoneNumber As String

Do you not see the issue there?