Structures, arrays and files

[Mcek]

The user is going to enter the product number, then the program must be able to open the file, read the information of a inventory in the company, capture the information and display the specific product with its information in the labels. all this using a multidimensional arrays and also the structures. currently in the execution it reads only one part of the data.

I think that the direct declaration of the array is causing part of the problem, also my program is not reading and capturing well.

 Imports System.IO
 
Public Class frmMain
    Public Structure sInventory
        Public strProductNumber As String
        Public strProductDescription As String
        Public intProductQuantity As Integer
        Public dblProductCost As Double
        Public dblProductMarkup As Double
    End Structure
 
    Private Sub mnuBuscarProducto_Click(sender As Object, e As EventArgs) Handles mnuBuscarProducto.Click
        ' Read the file
        Dim inventarioFile As StreamReader
        inventarioFile = File.OpenText("DatosInventario.txt")
 
        'Array
        Dim strProductos() As String = {"123", "234", "345", "456", "567", "678"}
        Dim strDescripcion() As String = {"Juego de comedor con 2 sillas", "Sofá cama", "Escritorio", "Cama king", "Librero de 6'", "Mueble para pecera"}
        Dim intCantidad() As Integer = {15, 10, 25, 5, 35, 8}
        Dim dblCostos() As Double = {425.0, 769.0, 250.0, 1875.0, 399.0, 350.0}
        Dim dblProrciento() As Double = {0.25, 0.25, 0.35, 0.2, 0.3, 0.2}
        Dim i As Integer = 0
        Dim intProducto As Integer 'Valor que ingresó el usuario capturado
 
        'capture and validate
        If Integer.TryParse(txtNumeroProducto.Text, intProducto) Then
            intProducto = CInt(txtNumeroProducto.Text)
        Else
            MessageBox.Show("Debe ingresar un entero de tres dígitos")
        End If
 
        'Find something in the archive
        Dim blnBuscador As Boolean = False
        Do While blnBuscador = False And i <= (strProductos.Length - 1)
            If strProductos(i) = intProducto Then
                blnBuscador = True
                lblDescripcion.Text = inventarioFile.ReadLine()
                lblInventario.Text = inventarioFile.ReadLine()
                lblCosto.Text = inventarioFile.ReadLine()
                lblPrecioVenta.Text = inventarioFile.ReadLine()
                lblImporteCosto.Text = inventarioFile.ReadLine
                lblImportePrecioVenta.Text = inventarioFile.ReadLine
            End If
        Loop
        i += 1
        inventarioFile.Close()
    End Sub
 
    Private Sub frmMain_FormClosing(sender As Object, e As FormClosingEventArgs) Handles MyBase.FormClosing
        If MessageBox.Show("Desea cerrar la aplicación?", "Confirmar", MessageBoxButtons.YesNo) = DialogResult.Yes Then
            e.Cancel = False
        Else
            e.Cancel = True
        End If
    End Sub
 
    Private Sub mnuSalir_Click(sender As Object, e As EventArgs) Handles mnuSalir.Click
        Me.Close()
        frmSplash.Close()
    End Sub
 
    Private Sub frmMain_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        'Open the file text
        ofdDatosInventario.ShowDialog()
    End Sub
End Class

[.paul.]

When you post a code block here, select the block of text and click the # (code) button in the message editor. Your code formatting will be preserved, and we’ll all be able to read it easier...

[jmcilhinney]

Is this a homework assignment that requires you to use a multi dimensional array? If not, don't do it.

[jmcilhinney]

As for the issue, you need to debug your code first. You need to be able to point out exactly where the actual behaviour differs from the expected and what each of those behaviours is.

[ChrisE]

Is this a homework assignment that requires you to use a multi dimensional array? If not, don't do it.

sure could be Homework,

I would use OLEDB with a Datareader to search(with SQL) and then read that foundline to Labels
or Return that nothing was found

[Mcek]

Okay

[Mcek]

Yes, I need to use a multidimensional array

[Shaggy Hiker]

Well, if it's homework, have you covered breakpoints and stepping through code, yet? Lots of classes seem to leave that till late, or leave it out entirely, but it's the single most valuable skill you can have, and I would say that it should be covered first or second. Still, if you haven't covered that, ask about that, because it's what you want to be using. That's what JMC was talking about in post #4.

That class is doing one thing right, because you are using Integer.TryParse to check user input. However, you are being a bit inefficient about it:

If Integer.TryParse(txtNumeroProducto.Text, intProducto) Then
            intProducto = CInt(txtNumeroProducto.Text)

The second line isn't necessary. What TryParse does is attempt the conversion. If it succeeds, then the converted integer is put into the second argument. In other words, if TryParse works, then intProducto already has the correct integer, so repeating the conversion and assignment in the second line is redundant.

[techgnome]

The user is going to enter the product number, then the program must be able to open the file, read the information of a inventory in the company, capture the information and display the specific product with its information in the labels. all this using a multidimensional arrays and also the structures. currently in the execution it reads only one part of the data.

I think that the direct declaration of the array is causing part of the problem, also my program is not reading and capturing well.

You've declared multiple arrays... not multi-dimentional arrays...
You've declared a structure... but then aren't using it.
You're opened a file, but then don't use it to search...

Instead you've declare a number of arrays, hard-coded values into them, looked through THAT data, then try to read frmo the file when you find a match in the array... I don't think that was the intent.

I *think* you were supposed to open the file, use the structure to read from it, put the data into the arrays (or array since it's supposed to be multi-dimentional (yuck)) ... THEN loop through THAT to find the data and display it.

You're getting strange solutions because the assignment is completely counter to how it would be done in the real world... however... it is what it is, and sometimes we have to deal with the strangest of requirements regardless of their insanity.

-tg

[Mcek]

You've declared multiple arrays... not multi-dimentional arrays...
You've declared a structure... but then aren't using it.
You're opened a file, but then don't use it to search...

Instead you've declare a number of arrays, hard-coded values into them, looked through THAT data, then try to read frmo the file when you find a match in the array... I don't think that was the intent.

I *think* you were supposed to open the file, use the structure to read from it, put the data into the arrays (or array since it's supposed to be multi-dimentional (yuck)) ... THEN loop through THAT to find the data and display it.

You're getting strange solutions because the assignment is completely counter to how it would be done in the real world... however... it is what it is, and sometimes we have to deal with the strangest of requirements regardless of their insanity.

-tg

Ok that’s exactly what I need