Reading and Writing Settings.ini files in Vb.NET

Probably the easiest way to read and write settings.ini files in VB.NET is with a little bit of code from NuGET from MarioZ called https://github.com/MarioZ/MadMilkman.Ini

This is a section that I wrote using the examples to check and see if values exist, before writing a default settings file.

Imports MadMilkman.Ini

Public Class Form1

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load

    ' Create new file with a default formatting.
    Dim file As New IniFile()

    'The file exists 
    If System.IO.File.Exists("settings.ini") Then
        file.Load("settings.ini")
    End If

    Dim section As IniSection = file.Sections.Add("Main")
    section.TrailingComment.Text = "Main Settings"

    Dim Values As String = file.Sections("Main")?.Keys("DataPath")?.Value

    If Values IsNot Nothing Then
        Console.WriteLine("it's not empty" & Values)
    Else
        Console.WriteLine("it's empty")

        ' Add new key and its value.
        Dim key As IniKey = section.Keys.Add("DataPath", "c:\temp\test.txt")
        ' Add leading comment.
        key.LeadingComment.Text = "Data path where the schedules live"

        ' Save file.
        file.Save("settings.ini")

    End If

    TextBox_Schedule_File.Text = file.Sections("Main")?.Keys("DataPath")?.Value

End Sub

End Class

In keeping with the simple example, this writes a value to a file if the file exists.

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button4.Click
    If (FolderBrowserDialog1.ShowDialog() = DialogResult.OK) Then
        TextBox1.Text = FolderBrowserDialog1.SelectedPath & "\test.txt"

        ' Create new file with a default formatting.
        Dim file As New IniFile()

        'The file exists 
        If System.IO.File.Exists("settings.ini") Then
            file.Load("settings.ini")
            file.Sections("Main").Keys("DataPath").Value = TextBox1.Text
            file.Save("settings.ini")
        End If
    End If
End Sub