I have a messagebox that asks if I want to delete a specific ebook from my listbox.
The message says, "“Do you want to remove the x eBook?” the x needs to be the title of the book selected.
This is what I have:
Each line in the textbox has Title, Author, and Price
So, my x is showing Title, Author, and Price.
Examples:
Textbox shows:
Allegiant Veronica Roth 3.99
Divergent Veronica Roth 2.99
My message is showing:
Do you want to remove the Allegiant Veronica Roth 3.99 eBook?
What I want is: Do you want to remove the Allegiant eBook?
Please, any suggestions?
Thanks
Here is the full program:
The message says, "“Do you want to remove the x eBook?” the x needs to be the title of the book selected.
This is what I have:
Code:
Private Sub btnRemove_Click(sender As Object, e As EventArgs) Handles btnRemove.Click
' removes the selected line from the list box
Dim x As String = lstEbooks.Text()
If MessageBox.Show(“Do you want to remove the " &
x & " eBook?”,
"eBooks", MessageBoxButtons.YesNo,
MessageBoxIcon.Warning,
MessageBoxDefaultButton.Button1)
= DialogResult.Yes Then
' if a line is selected, remove the line
If lstEbooks.SelectedIndex <> -1 Then
lstEbooks.Items.RemoveAt(lstEbooks.SelectedIndex)
End If
End If
End Sub
So, my x is showing Title, Author, and Price.
Examples:
Textbox shows:
Allegiant Veronica Roth 3.99
Divergent Veronica Roth 2.99
My message is showing:
Do you want to remove the Allegiant Veronica Roth 3.99 eBook?
What I want is: Do you want to remove the Allegiant eBook?
Please, any suggestions?
Thanks
Here is the full program:
Code:
Option Explicit On
Option Strict On
Option Infer Off
' Name: Ebook Project
' Purpose: Adds and deletes list box entries
' Reads information from a sequential access file
' Writes information to a sequential access file
' Programmer: Amanda Lovett on 04-07-17
Imports System.Reflection
Public Class frmMain
Private Sub frmMain_Load(sender As Object, e As EventArgs) Handles Me.Load
' fills the list box with data from
' a sequential access file
Dim inFile As IO.StreamReader
Dim strInfo As String
' verify that the file exists
If IO.File.Exists("Ebooks.txt") Then
'open the file for input
inFile = IO.File.OpenText("Ebooks.txt")
' process loop instructions until end of file
Do Until inFile.Peek = -1
strInfo = inFile.ReadLine
lstEbooks.Items.Add(strInfo)
Loop
inFile.Close()
' select the first line in the list box
lstEbooks.SelectedIndex = 0
Else
MessageBox.Show("Can't find the Ebooks.txt file",
"eBooks", MessageBoxButtons.OK,
MessageBoxIcon.Information)
End If
End Sub
Private Sub btnAdd_Click(sender As Object, e As EventArgs) Handles btnAdd.Click
' adds eBook information to the list box
' declare variables
Dim strTitle As String
Dim strAuthor As String
Dim strPrice As String
Dim strConcatenatedInfo As String
Dim dblPrice As Double
' get the eBook information
strTitle = InputBox("Title:", "eBooks")
strAuthor = InputBox("Author:", "eBooks")
strPrice = InputBox("Price", "eBooks")
' format the price, then concatenate the input
' items, using 40 characters for the title,
' 35 characters for the author, and 5
' characters for the price
Double.TryParse(strPrice, dblPrice)
strPrice = dblPrice.ToString("n2")
strConcatenatedInfo = strTitle.PadRight(40) &
strAuthor.PadRight(35) & strPrice.PadLeft(5)
' add the information to the list box
lstEbooks.Items.Add(strConcatenatedInfo)
End Sub
Private Sub btnRemove_Click(sender As Object, e As EventArgs) Handles btnRemove.Click
' removes the selected line from the list box
Dim x As String = lstEbooks.Text()
If MessageBox.Show(“Do you want to remove the " & x & " eBook?”,
"eBooks", MessageBoxButtons.YesNo,
MessageBoxIcon.Warning,
MessageBoxDefaultButton.Button1) = DialogResult.Yes Then
' if a line is selected, remove the line
If lstEbooks.SelectedIndex <> -1 Then
lstEbooks.Items.RemoveAt(lstEbooks.SelectedIndex)
End If
End If
End Sub
Private Sub frmMain_FormClosing(sender As Object, e As FormClosingEventArgs) Handles Me.FormClosing
' save the list box information
' declare a StreamWriter variable
Dim outFile As IO.StreamWriter
' open the file for output
outFile = IO.File.CreateText("Ebooks.txt")
' write each line in the list box
For intIndex As Integer = 0 To lstEbooks.Items.Count - 1
outFile.WriteLine(lstEbooks.Items(intIndex))
Next intIndex
' close the file
outFile.Close()
End Sub
Private Sub btnExit_Click(sender As Object, e As EventArgs) Handles btnExit.Click
Me.Close()
End Sub
End Class
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