• 0

String Test in VB.NET


Question

I am suppose to create an application that displays the first letter, last letter, and middle letter of a word or phrase. This is my code so far:

'Jane Lewis

'String Test

'Displays the first letter, last letter, and middle letter of a word or phrase

Public Class frmStringTest

Private Sub btnDisplayData_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDisplayData.Click

Dim word As String

Dim firstLetter As String

Dim secondLetter As String

Dim lastLetter As String

Dim numLetters As Integer

?

word = Me.txtPhrase.Text

word = word.ToLower

numLetters = word.Length

End Sub

End Class

 

What else do I need?

We are working on Strings this week, and I am not understanding Strings very well, and they are confusing to me. I ask my teacher for an one on one explanation, but my Programming teacher didn't make it any clearer.If you give me the for this problem, can you explain why you do this and that, please. Thank you.

 

Link to comment
https://www.neowin.net/forum/topic/1203365-string-test-in-vbnet/
Share on other sites

15 answers to this question

Recommended Posts

  • 0

http://msdn.microsoft.com/en-us/library/system.string(v=vs.110).aspx?cs-save-lang=1&cs-lang=vb#code-snippet-1

 

Take a look at the "Properties" section for something that might help. It sounds like you want the character at the first position in the String as well as the last position and somewhere halfway...

  • 0
  On 04/03/2014 at 18:31, Jane Lewis said:

I am suppose to create an application that displays the first letter, last letter, and middle letter of a word or phrase. This is my code so far:

'Jane Lewis

'String Test

'Displays the first letter, last letter, and middle letter of a word or phrase

Public Class frmStringTest

Private Sub btnDisplayData_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDisplayData.Click

Dim word As String

Dim firstLetter As String

Dim secondLetter As String

Dim lastLetter As String

Dim numLetters As Integer

?

word = Me.txtPhrase.Text

word = word.ToLower

numLetters = word.Length

End Sub

End Class

 

What else do I need?

We are working on Strings this week, and I am not understanding Strings very well, and they are confusing to me. I ask my teacher for an one on one explanation, but my Programming teacher didn't make it any clearer.If you give me the for this problem, can you explain why you do this and that, please. Thank you.

If you look at a string as a list of chars, you just need the first character which starts at 0 then the last, given to you by word.Length, and then the middle which would be word.Length divided by 2.  

 

http://msdn.microsoft.com/en-us/library/hxthx5h6(v=vs.110).aspx

  • 0
  On 04/03/2014 at 18:31, Jane Lewis said:

I am suppose to create an application that displays the first letter, last letter, and middle letter of a word or phrase. This is my code so far:

'Jane Lewis

'String Test
'Displays the first letter, last letter, and middle letter of a word or phrase
Public Class frmStringTest
Private Sub btnDisplayData_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDisplayData.Click
Dim word As String
Dim firstLetter As String
Dim secondLetter As String
Dim lastLetter As String
Dim numLetters As Integer
?
word = Me.txtPhrase.Text
word = word.ToLower
numLetters = word.Length
End Sub
End Class

What else do I need?

We are working on Strings this week, and I am not understanding Strings very well, and they are confusing to me. I ask my teacher for an one on one explanation, but my Programming teacher didn't make it any clearer.If you give me the for this problem, can you explain why you do this and that, please. Thank you.

 

You should read up on strings.

Now there are several approaches to this.. I would recommend this way:

Public Class Form1

    Dim myString As String
    Dim stringLen As Integer
    Dim firstChar As String
    Dim lastChar As String
    Dim middleLetter As String
    Dim saveMYVars As Boolean
    Dim anothervar As Double
    Dim learntocode As String

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        myString = "Firey is the best coder ever"

        'step 1, get the string length
        Dim counter As Integer
        For counter = 0 To myString.Length
            stringLen = stringLen + 1
        Next counter

        'step 2, find the first letter
        firstChar = myString.Substring(0, 1)

        'step 3 last letter
        lastChar = myString.Substring(stringLen - 2, 1)

        'step 4, ensure we have the right letters
        firstChar = myString(0)
        lastChar = myString(stringLen - 2)

        'Step 5 get the middle letter.
        For counter = 1 To myString.Length / 2
            middleLetter = myString.Substring(counter - 1, 1)
        Next counter

        'Step 6, verify it's the middle letter
        middleLetter = myString(stringLen / 2)

        'Step 7, save the variables off so the computer doesn't forget
        saveMYVars = True 'this is critical in any VB Program

        'step 8, show it
        If (saveMYVars) Then
            MessageBox.Show("Firster")
            MessageBox.Show(myString(0))
            MessageBox.Show("Middleer")
            MessageBox.Show(myString.Substring(counter - 1, 1))
            MessageBox.Show("Laster")
            MessageBox.Show(lastChar)
        End If
    End Sub
End Class

The code above is tested and working.

  • 0
  On 04/03/2014 at 18:56, firey said:

You should read up on strings.

Now there are several approaches to this.. I would recommend this way:

Public Class Form1

    Dim myString As String
    Dim stringLen As Integer
    Dim firstChar As String
    Dim lastChar As String
    Dim middleLetter As String
    Dim saveMYVars As Boolean
    Dim anothervar As Double
    Dim learntocode As String

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        myString = "Firey is the best coder ever"

        'step 1, get the string length
        Dim counter As Integer
        For counter = 0 To myString.Length
            stringLen = stringLen + 1
        Next counter

        'step 2, find the first letter
        firstChar = myString.Substring(0, 1)

        'step 3 last letter
        lastChar = myString.Substring(stringLen - 2, 1)

        'step 4, ensure we have the right letters
        firstChar = myString(0)
        lastChar = myString(stringLen - 2)

        'Step 5 get the middle letter.
        For counter = 1 To myString.Length / 2
            middleLetter = myString.Substring(counter - 1, 1)
        Next counter

        'Step 6, verify it's the middle letter
        middleLetter = myString(stringLen / 2)

        'Step 7, save the variables off so the computer doesn't forget
        saveMYVars = True 'this is critical in any VB Program

        'step 8, show it
        If (saveMYVars) Then
            MessageBox.Show("Firster")
            MessageBox.Show(myString(0))
            MessageBox.Show("Middleer")
            MessageBox.Show(myString.Substring(counter - 1, 1))
            MessageBox.Show("Laster")
            MessageBox.Show(lastChar)
        End If
    End Sub
End Class

The code above is tested and working.

May I ask why you set counter = 0

And I am a visual learner I have to see it done, and then I will get it.

  • 0

To be completely honest with you, my code is crazy convoluted (to get you thinking about what is happening).  You can do your entire project in 4 lines with only 1 variable. 

Think of strings as an array of chars.  You access arrays using indexes.

Index 0 = first
Index (length - 1) = last
Index (length / 2 - 1) = middle.

Imagine your string is an array (I show examples of it in my code).  Use what I wrote above (substituting length for that actual string length) to achieve what you want.

If I was to write the code in C# it would be something simple ie)

string myString = "myString";
MessageBox.Show("Firster: " + myString[0].toString() + " Middle Letter: " + myString[(myString.Length / 2) - 1].ToString() + " Last Letter: " + myString[myString.Length - 1],"Parts of a string"); 

  • 0
  On 04/03/2014 at 19:11, snaphat (Myles Landwehr) said:

You guy shouldn't be giving outright solutions. This is a homework assignment...

I agree, hence my code is so convoluted no teacher would ever accept it.  It is also 4 different ways of solving it with random ###### that does nothing.

  • 0
  On 04/03/2014 at 19:08, firey said:

To be completely honest with you, my code is crazy convoluted (to get you thinking about what is happening).  You can do your entire project in 4 lines with only 1 variable. 

Think of strings as an array of chars.  You access arrays using indexes.

Index 0 = first

Index (length - 1) = last

Index (length / 2 - 1) = middle.

Imagine your string is an array (I show examples of it in my code).  Use what I wrote above (substituting length for that actual string length) to achieve what you want.

If I was to write the code in C# it would be something simple ie)

string myString = "myString";

MessageBox.Show("Firster: " + myString[0].toString() + " Middle Letter: " + myString[(myString.Length / 2) - 1].ToString() + " Last Letter: " + myString[myString.Length - 1],"Parts of a string"); 

I think I got a better understanding of Strings now, thank you. You should be a teacher yourself.

  • 0
  On 04/03/2014 at 19:15, firey said:

I agree, hence my code is so convoluted no teacher would ever accept it.  It is also 4 different ways of solving it with random #### that does nothing.

 

  On 04/03/2014 at 19:08, firey said:

To be completely honest with you, my code is crazy convoluted (to get you thinking about what is happening).  You can do your entire project in 4 lines with only 1 variable. 

Think of strings as an array of chars.  You access arrays using indexes.

Index 0 = first

Index (length - 1) = last

Index (length / 2 - 1) = middle.

Imagine your string is an array (I show examples of it in my code).  Use what I wrote above (substituting length for that actual string length) to achieve what you want.

If I was to write the code in C# it would be something simple ie)

string myString = "myString";

MessageBox.Show("Firster: " + myString[0].toString() + " Middle Letter: " + myString[(myString.Length / 2) - 1].ToString() + " Last Letter: " + myString[myString.Length - 1],"Parts of a string"); 

This is the final code I have:

Public Class frmStringTest

Private Sub btnDisplayData_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDisplayData.Click

Dim myString As String = Me.txtPhrase.Text 'declares the phrase enter by the user as a string

Dim stringLen As Integer 'declares as a string

Dim firstletter As String 'declares as a string

Dim lastletter As String 'declares as a string

Dim middleLetter As String 'declares as a string

Dim counter As Integer 'decalres counter as an Integer

For counter = 0 To myString.Length 'The counter starts at O to how many characters/letters are in the word/phrase

stringLen = stringLen + 1 'Goes up by 1

Next counter

'finding the first letter

firstletter = myString.Substring(0, 1)

Me.lblFirstAnswer.Text = firstletter 'Letter/character for the first letter will display here

'Finding the last letter

lastletter = myString.Substring(stringLen - 2, 1)

Me.lblLastAnswer.Text = lastletter 'Letter/character for the last letter will display here

'Ensures that I have the right letters

firstletter = myString(0)

lastletter = myString(stringLen - 2)

'Finding the middle letter.

For counter = 1 To myString.Length / 2

middleLetter = myString.Substring(counter - 1, 1)

Next counter

'Step 6, verify it's the middle letter

middleLetter = myString(stringLen / 2 - 1)

Me.lblMiddleAnswer.Text = middleLetter

End Sub

End Class

  • 0

Hello,

  On 04/03/2014 at 19:02, Jane Lewis said:

May I ask why you set counter = 0

And I am a visual learner I have to see it done, and then I will get it.

We already gave you that once. You should know some basic VB .NET functions a month later.

  On 04/03/2014 at 19:11, snaphat (Myles Landwehr) said:

You guy shouldn't be giving outright solutions. This is a homework assignment...

Once, IMO, OK. Twice, no. But then I guess firey (nothing against you firey :) ) is allowed to give 90% of the solution instead of 100% :huh:

Anyways, looking at this: http://msdn.microsoft.com/en-us/library/hxthx5h6%28v=vs.110%29.aspx should be MORE than enough to help you out.

  • 0
  On 11/03/2014 at 16:20, riahc3 said:

Hello,

We already gave you that once. You should know some basic VB .NET functions a month later.

Once, IMO, OK. Twice, no. But then I guess firey (nothing against you firey :) ) is allowed to give 90% of the solution instead of 100% :huh:

Anyways, looking at this: http://msdn.microsoft.com/en-us/library/hxthx5h6%28v=vs.110%29.aspx should be MORE than enough to help you out.

I didn't realize this was the second post.  However yea I am not going to give a 100% answer.  People do need to learn for themselves and I agree fully.   At the same time though, simply redirecting people to another resource doesn't do much especially when you don't know wtf you are looking at.

So I figured I'd give some ridiculous answer, and she could go through with a deubgger and test each line and see what happens.

  • 0

Hello,

  On 11/03/2014 at 16:25, firey said:

At the same time though, simply redirecting people to another resource doesn't do much especially when you don't know wtf you are looking at.

A month later the person should already know a basic function in VB .NET

I understand at first functions can surprise you but a month later......Basic things like Substring are not really hard.

http://lmgtfy.com/?q=how+to+use+substring+function+in+vb+.net

Just looking at Google pretty much lays it down.

  • 0
  On 11/03/2014 at 16:29, riahc3 said:

Hello,

A month later the person should already know a basic function in VB .NET

I understand at first functions can surprise you but a month later......Basic things like Substring are not really hard.

http://lmgtfy.com/?q=how+to+use+substring+function+in+vb+.net

Just looking at Google pretty much lays it down.

As I say, I didn't realize that this was already asked a month ago by the same person.  You are right, basic things aren't hard and for the most part are easy to grasp.  

  • 0

Hello,

  On 11/03/2014 at 16:32, firey said:

As I say, I didn't realize that this was already asked a month ago by the same person.  You are right, basic things aren't hard and for the most part are easy to grasp.

The only reason I came into this thread is because I was in that thread so its normal you didnt notice :)

Also, he "left" the previous thread; No solved, no thanks, nothing.

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Posts

    • Report: Trump's T1 Mobile off to a rocky start with messy pre-orders by David Uzondu You might have heard by now that The Trump Organization, spearheaded by President Trump's sons, Donald Trump Jr. and Eric Trump, is launching yet another product to add to the collection. This time, it is a gold smartphone, the T1, and a companion wireless service. The whole operation is being pushed with the usual "America-first" bravado, but it seems they forgot to get the basics right. If you thought you could just hop online and secure your patriotic pocket computer, you are in for a nasty surprise, as the whole process appears to be fundamentally broken. A new report from 404Media details this chaos perfectly, as one of their writers tried to order one of the T1 phones. The goal was simple: pay the $100 preorder deposit and see what this thing is all about when it ships. What happened next was a masterclass in how not to conduct e-commerce. The website crashed, booted him to an error page, and then, for good measure, charged his credit card the wrong amount entirely, taking $64.70. And get this, he received a confirmation email saying his order would ship... despite never once being asked for his shipping address. It is, in his words, the "worst experience I've ever faced buying a consumer electronic product". To add insult to injury, when he tried to log into the new account, the site prompted him to create, and he was immediately met with yet another error page, locking him out. The shoddy experience is not just limited to the checkout. Neowin found a bunch of errors on the official product page. Sure, it boasts a big 6.8-inch Punch Hole AMOLED display with a 120Hz refresh rate and a 50MP main camera, which sounds nice on paper. But then you notice the company completely forgot to mention what processor powers the phone, which is probably a MediaTek. At one point, the page bizarrely listed a "5,000 mAh long life camera," though that has since been fixed. By the way, there's good reason to doubt that this phone will be made in America, despite the press releases insisting it will be. Sourcing all the necessary components without using foreign parts is unbelievably difficult and expensive, something even Apple does not do. The more likely scenario, according to Max Weinbach, is that this is simply a reskin of a much cheaper device, maybe the T-Mobile REVVL 7 Pro 5G, which retails at a fraction of the T1's $499 asking price. The T1 Mobile joins a sprawling collection of other products likely aimed at the same loyal customer. The catalog of gear for this audience already includes the gold "Never Surrender" sneakers, the "God Bless the USA" Bible, "Victory47" perfume, digital trading cards, $TRUMP memecoins, and more. It is still very early days, of course, and while one might forgive some teething issues for a new venture, this initial preorder phase has been exceptionally chaotic. Hopefully, things will become much clearer once there is a firm launch date and a physical product to test. Do you plan to buy the T1 and move to Trump Mobile?
    • Is this release set for the end of this year or for next year?
    • Windows 10 KB5063159 fixes bug that wouldn't let some Microsoft Surface devices boot by Sayan Sen Microsoft released Windows 10 Patch Tuesday updates for the month last week. The one for Windows 10 under KB5060533 / KB5060531 / KB5061010 / KB5060998 introduced a bug that would not let Surface Hub v1 devices start due to a Secure Boot validation issue. As such, Microsoft had paused the update similar to the compatibility blocks or safeguard holds it applies for major feature updates as well. This bug was uncovered after the update went live, as Microsoft later added it to the list of known issues for that update and it also put up a big notice in bold. It wrote: Earlier today, the company released an out-of-band (OOB) update to address the issue. It has been published under KB5063159 and is only being offered to Surface Hub v1 devices instead of the buggy KB5060533 Patch Tuesday one. In the description of the new OOB update, Microsoft writes: You can find the support article for KB5063159 here on Microsoft's website. It is downloaded and installed automatically but users can also manually download it from the Microsoft Update Catalog website.
    • I thought I saw that one, and yeah, it was awhile ago, too..
  • Recent Achievements

    • Week One Done
      korostelev earned a badge
      Week One Done
    • Week One Done
      rozermack875 earned a badge
      Week One Done
    • Week One Done
      oneworldtechnologies earned a badge
      Week One Done
    • Veteran
      matthiew went up a rank
      Veteran
    • Enthusiast
      Motoman26 went up a rank
      Enthusiast
  • Popular Contributors

    1. 1
      +primortal
      683
    2. 2
      ATLien_0
      268
    3. 3
      Michael Scrip
      184
    4. 4
      +FloatingFatMan
      177
    5. 5
      Steven P.
      140
  • Tell a friend

    Love Neowin? Tell a friend!