How to handle button to open a file using Powershell? - powershell

Question

I want to open a file after I select the file using the GUI. When I try my code, I can not open the file I selected. It returns Get-Content Cannot find the path. Anyone can help me, please.
Function File ($InitialDirectory)
{
Add-Type -AssemblyName System.Windows.Forms
$OpenFileDialog = New-Object System.Windows.Forms.OpenFileDialog
$OpenFileDialog.Title = "Please Select File"
$OpenFileDialog.InitialDirectory = $InitialDirectory
$OpenFileDialog.filter = “All files (*.*)| *.*”
If ($OpenFileDialog.ShowDialog() -eq "Cancel")
{
[System.Windows.Forms.MessageBox]::Show("No File Selected. Please select a file !", "Error", 0,
[System.Windows.Forms.MessageBoxIcon]::Exclamation)
} $Global:SelectedFile = $OpenFileDialog.SafeFileName
Get-Content "$Global:SelectedFile" | ForEach-Object {
$_.Trim()
} | Where-Object {
$_ -notmatch '^(;|$)'
} | ForEach-Object {
if ($_ -match '^\[.*\]$') {
$section = $_ -replace '\[|\]'
$ini_file[$section] = #{}
} else {
$key, $value = $_ -split '\s*=\s*', 2
$ini_file[$section][$key] = $value
}
}
}
Add-Type -AssemblyName System.Windows.Forms
[System.Windows.Forms.Application]::EnableVisualStyles()
$Form = New-Object system.Windows.Forms.Form
$Form.AutoSize = $true
$Form.text = "OpenFile"
$Form.TopMost = $true
#----------------------
$Choose1 = New-Object system.Windows.Forms.Label
$Choose1.text = "MLs"
$Choose1.AutoSize = $true
$Choose1.width = 25
$Choose1.height = 10
$Choose1.location = New-Object System.Drawing.Point(28,20)
$Choose1.ForeColor = "#000000"
$Sel = New-Object system.Windows.Forms.TextBox
$Sel.AutoSize = $true
$Sel.width = 150
$Sel.height = 30
$Sel.location = New-Object System.Drawing.Point(120,40)
$Sel.Text = "Selected"
$Choose2 = New-Object System.Windows.Forms.Button
$Choose2.text = "Select File"
$Choose2.AutoSize = $true
$Choose2.width = 90
$Choose2.height = 20
$Choose2.location = New-Object System.Drawing.Point(28,38)
$Choose2.ForeColor = "#ffffff"
$Choose2.BackColor = "#093c76"
$Close = New-Object system.Windows.Forms.Button
$Close.BackColor = "#6996c8"
$Close.text = "Close"
$Close.width = 98
$Close.height = 30
$Close.location = New-Object System.Drawing.Point(450,190)
$Close.Add_Click({$Form.Close()})
#----------
$Choose2.Add_Click({Sel_File
$Sel.Text = $Global:SelectedFile
})
$Form.Controls.AddRange(#($Choose1, $Sel, $Choose2, $Close))
[void] $Form.ShowDialog()
My expectation, I can open the file because I want to process the file. The file that I want to open is .INI file.
Function File ($InitialDirectory)
{
Add-Type -AssemblyName System.Windows.Forms
$OpenFileDialog = New-Object System.Windows.Forms.OpenFileDialog
$OpenFileDialog.Title = "Please Select File"
$OpenFileDialog.InitialDirectory = $InitialDirectory
$OpenFileDialog.filter = “All files (*.*)| *.*”
If ($OpenFileDialog.ShowDialog() -eq "Cancel")
{
[System.Windows.Forms.MessageBox]::Show("No File Selected. Please select a file !", "Error", 0,
[System.Windows.Forms.MessageBoxIcon]::Exclamation)
} $Global:SelectedFile = $OpenFileDialog.FileName
}
Function Get-IniContent ($Global:SelectedFile)
{
$ini = #{}
switch -regex -file $Global:SelectedFile
{
“^\[(.+)\]” # Section
{
$section = $matches[1]
$ini[$section] = #{}
$CommentCount = 0
}
“^(;.*)$” # Comment
{
$value = $matches[1]
$CommentCount = $CommentCount + 1
$name = “Comment” + $CommentCount
$ini[$section][$name] = $value
}
“(.+?)\s*=(.*)” # Key
{
$name,$value = $matches[1..2]
$ini[$section][$name] = $value
}
}
return $ini
}
$iniContent = Get-IniContent $Global:SelectedFile
$Region = $iniContent[“Location”]
Add-Type -AssemblyName System.Windows.Forms
[System.Windows.Forms.Application]::EnableVisualStyles()
$Form = New-Object system.Windows.Forms.Form
$Form.AutoSize = $true
$Form.text = "OpenFile"
$Form.TopMost = $true
#----------------------
$Choose1 = New-Object system.Windows.Forms.Label
$Choose1.text = "MLs"
$Choose1.AutoSize = $true
$Choose1.width = 25
$Choose1.height = 10
$Choose1.location = New-Object System.Drawing.Point(28,20)
$Choose1.ForeColor = "#000000"
$Sel = New-Object system.Windows.Forms.TextBox
$Sel.AutoSize = $true
$Sel.width = 150
$Sel.height = 30
$Sel.location = New-Object System.Drawing.Point(120,40)
$Sel.Text = "Selected"
$Choose2 = New-Object System.Windows.Forms.Button
$Choose2.text = "Select File"
$Choose2.AutoSize = $true
$Choose2.width = 90
$Choose2.height = 20
$Choose2.location = New-Object System.Drawing.Point(28,38)
$Choose2.ForeColor = "#ffffff"
$Choose2.BackColor = "#093c76"
$Close = New-Object system.Windows.Forms.Button
$Close.BackColor = "#6996c8"
$Close.text = "Close"
$Close.width = 98
$Close.height = 30
$Close.location = New-Object System.Drawing.Point(450,190)
$Close.Add_Click({$Form.Close()})
#----------
$Choose2.Add_Click({File
$Sel.Text = $Global:SelectedFile
})
$Form.Controls.AddRange(#($Choose1, $Sel, $Choose2, $Close))
[void] $Form.ShowDialog()
I use edited code, but I can not handle the button. I want to read the INI Section [Location] after I select the file. With this code, The section already printed before I select the file.

Answer 1

You don't need Global variables at all for this.. Basically, the main form should capture the $Sel.Text from the dialog into a variable, check if that is not the default value of "Selected" and that should do it:
function Select-File ($InitialDirectory) {
Add-Type -AssemblyName System.Windows.Forms
$OpenFileDialog = New-Object System.Windows.Forms.OpenFileDialog
$OpenFileDialog.Title = "Please Select File"
$OpenFileDialog.InitialDirectory = $InitialDirectory
$OpenFileDialog.filter = "All files (*.*)| *.*"
If ($OpenFileDialog.ShowDialog() -eq "Cancel") {
[System.Windows.Forms.MessageBox]::Show("No File Selected. Please select a file !", "Error", 0,
[System.Windows.Forms.MessageBoxIcon]::Exclamation)
$result = $null
}
else {
$result = $OpenFileDialog.FileName
}
$OpenFileDialog.Dispose()
return $result
}
function Get-IniContent ($FilePath) {
$ini = #{}
switch -regex -file $FilePath
{
"^\[(.+)\]" # Section
{
$section = $matches[1]
$ini[$section] = #{}
$CommentCount = 0
}
"^(;.*)$" # Comment
{
$value = $matches[1]
$CommentCount = $CommentCount + 1
$name = "Comment" + $CommentCount
$ini[$section][$name] = $value
}
"(.+?)\s*=(.*)" # Key
{
$name,$value = $matches[1..2]
$ini[$section][$name] = $value
}
}
return $ini
}
###############
# Main routine
###############
Add-Type -AssemblyName System.Windows.Forms
[System.Windows.Forms.Application]::EnableVisualStyles()
$Form = New-Object system.Windows.Forms.Form
$Form.AutoSize = $true
$Form.text = "OpenFile"
$Form.TopMost = $true
#----------------------
$Choose1 = New-Object system.Windows.Forms.Label
$Choose1.text = "MLs"
$Choose1.AutoSize = $true
$Choose1.width = 25
$Choose1.height = 10
$Choose1.location = New-Object System.Drawing.Point(28,20)
$Choose1.ForeColor = "#000000"
$Sel = New-Object system.Windows.Forms.TextBox
$Sel.AutoSize = $true
$Sel.width = 150
$Sel.height = 30
$Sel.location = New-Object System.Drawing.Point(120,40)
$Sel.Text = "Selected"
$Choose2 = New-Object System.Windows.Forms.Button
$Choose2.text = "Select File"
$Choose2.AutoSize = $true
$Choose2.width = 90
$Choose2.height = 20
$Choose2.location = New-Object System.Drawing.Point(28,38)
$Choose2.ForeColor = "#ffffff"
$Choose2.BackColor = "#093c76"
$Choose2.Add_Click({ $Sel.Text = Select-File })
$Close = New-Object system.Windows.Forms.Button
$Close.BackColor = "#6996c8"
$Close.text = "Close"
$Close.width = 98
$Close.height = 30
$Close.location = New-Object System.Drawing.Point(450,190)
$Close.Add_Click({$Form.Close()})
#----------
$Form.Controls.AddRange(#($Choose1, $Sel, $Choose2, $Close))
[void] $Form.ShowDialog()
# if the user did not fill in anything and left the default text of "Selected", set the result to null
$selectedFile = if ($Sel.Text -ne "Selected") { $Sel.Text } else { $null }
# clean up the form
$Form.Dispose()
# here, we test if there is a file selected and if it exists
if ($selectedFile -and (Test-Path -Path $selectedFile -PathType Leaf)) {
Write-Host "Reading INI file '$($selectedFile)'"
$iniContent = Get-IniContent $selectedFile
$Region = $iniContent["Location"]
$region
}
else {
Write-Warning "The dialog was cancelled or the selected file cannot be found."
}

Answer 2

As per my comment, you need to change the $OpenFileDialog.SafeFileName to $OpenFileDialog.FileName.
# SafeFileName = "Config.ini"
# FileName = "\\UNC\Path\Config.ini" or "C:\Temp\Config.ini"
Function File ($InitialDirectory) {
Add-Type -AssemblyName System.Windows.Forms
$OpenFileDialog = New-Object System.Windows.Forms.OpenFileDialog
$OpenFileDialog.Title = "Please Select File"
$OpenFileDialog.InitialDirectory = $InitialDirectory
$OpenFileDialog.filter = “All files (*.*)| *.*”
If ($OpenFileDialog.ShowDialog() -eq "Cancel")
{
[System.Windows.Forms.MessageBox]::Show("No File Selected. Please select a file !", "Error", 0,
[System.Windows.Forms.MessageBoxIcon]::Exclamation)
} $Global:SelectedFile = $OpenFileDialog.FileName
Get-Content "$Global:SelectedFile" | ForEach-Object {
$_.Trim()
} | Where-Object {
$_ -notmatch '^(;|$)'
} | ForEach-Object {
if ($_ -match '^\[.*\]$') {
$section = $_ -replace '\[|\]'
$ini_file[$section] = #{}
} else {
$key, $value = $_ -split '\s*=\s*', 2
$ini_file[$section][$key] = $value
}
}
}
Add-Type -AssemblyName System.Windows.Forms
[System.Windows.Forms.Application]::EnableVisualStyles()