问题
Few days of searching and trying multiple options, but nothing is working actually. With the previous code posted.
I've imported all my objects from XAML (all set in variables), I don't know if that would be a problem for that. I don't think since everything else seems to work properly.
I just want my Tab2CBB2 to show values depending on the selection of Tab1CBB1. Anyone could help ? (I haven't paste the entire code, neither the paths but you can probably help me with that). Note that those are two of my multiple tries. Thanks
[void][System.Reflection.Assembly]::LoadWithPartialName('presentationframework')
[xml]$xaml = @" ...
"@
#Read XAML (Parse it)
$reader=(New-Object System.Xml.XmlNodeReader $XAML)
$Window=[Windows.Markup.XamlReader]::Load( $reader )
$listQA14 = Get-ChildItem $pathQA14 -name
$listQA15 = Get-ChildItem $pathQA15 -name
$listDBQA = Get-ChildItem $pathDBQA -name
$Tab1CBB1_SelectedIndexChanged= {
$Tab1CBB2.Items.Clear() # Clear the list
$Tab1CBB2.Text = $null # Clear the current entry
Switch ($Tab1CBB1.Text) {
'QA14' {
$ListQA14 | ForEach { $Tab1CBB2.Items.Add($_) }
}
'QA15' {
$ListQA15 | ForEach { $Tab1CBB2.Items.Add($_) }
}
'ARIELDBQA' {
$ListDBQA | ForEach { $Tab1CBB2.Items.Add($_) }
}
}
}
$Tab1CBB1.add_SelectedIndexChanged($Tab1CBB1_SelectedIndexChanged)
#Displays the Window
$Window.ShowDialog() | out-null
Here is another option tried :
#ComboBox1------
$ItemsCBB1 = @('ARIELDBQA','QA14','QA15')
foreach ($Item in $ItemsCBB1) {
$Tab1CBB1.Items.Add($Item)
}
#ComboBox2-------
if ($Tab1CBB1.SelectedItem -eq 'QA14') {
$Tab1CBB2.Items.Clear()
foreach ($Serie in $listQA14) {
$Tab1CBB2.Items.Add($Serie)
}
}
elseif ($Tab1CBB1.SelectedItem -eq 'QA15') {
$Tab1CBB2.Items.Clear()
foreach ($Serie in $listQA15) {
$Tab1CBB2.Items.Add($Serie)
}
}
elseif ($Tab1CBB1.SelectedItem -eq 'listDBQA') {
$Tab1CBB2.Items.Clear()
foreach ($Serie in $listDBQA) {
$Tab1CBB2.Items.Add($Serie)
}
}
Tried this also : $Selection = $Tab1CBB1.SelectedItem.ToString() Variable $selection put after 'if', but not working Note that when I indicate what the current selection would be, it is working properly. The problem seems to come from 'recording' the selection a the time of clicking... Thnaks !
回答1:
Basically, all you have to do is inside the $Tab1CBB1_SelectedIndexChanged scriptblock use the various lists with script scoping.
Without that, the variables are unknown inside the script block.
$Tab1CBB1_SelectedIndexChanged = {
$Tab1CBB2.Items.Clear() # Clear the list
$Tab1CBB2.Text = $null # Clear the current entry
switch ($Tab1CBB1.Text) {
'QA14' { $script:ListQA14 | ForEach-Object { $Tab1CBB2.Items.Add($_) } }
'QA15' { $script:ListQA15 | ForEach-Object { $Tab1CBB2.Items.Add($_) } }
'ARIELDBQA' { $script:ListDBQA | ForEach-Object { $Tab1CBB2.Items.Add($_) } }
}
}
Another method could be to dynamically get the items to enter in the combobox, especially since these are file lists and can change while your form is being used:
$Tab1CBB1_SelectedIndexChanged = {
$Tab1CBB2.Items.Clear() # Clear the list
$Tab1CBB2.Text = $null # Clear the current entry
switch ($Tab1CBB1.Text) {
'QA14' { $path = $script:pathQA14 ; break }
'QA15' { $path = $script:pathQA15 ; break }
'ARIELDBQA' { $path = $script:pathDBQA }
}
Get-ChildItem -Path $path -Name | ForEach-Object { $Tab1CBB2.Items.Add($_) }
}
回答2:
A simple example of what you seem to be after is something like this.
### Powershell populate ComboBox 2 based on ComboBox 1 Selection
Add-type -AssemblyName System.Windows.Forms
[System.Windows.Forms.Application]::EnableVisualStyles()
$form1 = New-Object 'System.Windows.Forms.Form'
$labelDoubleClickOnAnyItem = New-Object 'System.Windows.Forms.Label'
$listbox2 = New-Object 'System.Windows.Forms.ListBox'
$listbox1 = New-Object 'System.Windows.Forms.ListBox'
$buttonOK = New-Object 'System.Windows.Forms.Button'
$form1_Load={
$items=1..9 |
ForEach-Object {"List item $_"}
$listbox1.Items.AddRange($items)
}
$listbox1_MouseDoubleClick=[System.Windows.Forms.MouseEventHandler]{
$listbox2.Items.Add($listbox1.SelectedItem)
$listbox1.Items.Remove($listbox1.SelectedItem)
}
$listbox2_MouseDoubleClick=[System.Windows.Forms.MouseEventHandler]{
$listbox1.Items.Add($listbox2.SelectedItem)
$listbox2.Items.Remove($listbox2.SelectedItem)
}
$form1.Controls.Add($labelDoubleClickOnAnyItem)
$form1.Controls.Add($listbox2)
$form1.Controls.Add($listbox1)
$form1.Controls.Add($buttonOK)
$form1.AcceptButton = $buttonOK
$form1.ClientSize = '378, 388'
$form1.FormBorderStyle = 'FixedDialog'
$form1.MaximizeBox = $False
$form1.MinimizeBox = $False
$form1.Name = 'form1'
$form1.StartPosition = 'CenterScreen'
$form1.Text = 'Form'
$form1.add_Load($form1_Load)
$labelDoubleClickOnAnyItem.Font = 'Microsoft Sans Serif, 9.75pt, style=Bold, Italic'
$labelDoubleClickOnAnyItem.Location = '13, 13'
$labelDoubleClickOnAnyItem.Name = 'labelDoubleClickOnAnyItem'
$labelDoubleClickOnAnyItem.Size = '353, 41'
$labelDoubleClickOnAnyItem.TabIndex = 3
$labelDoubleClickOnAnyItem.Text = 'Double click on any item to move it from one box to the other.'
$listbox2.FormattingEnabled = $True
$listbox2.Location = '200, 67'
$listbox2.Name = 'listbox2'
$listbox2.Size = '166, 277'
$listbox2.Sorted = $True
$listbox2.TabIndex = 2
$listbox2.add_MouseDoubleClick($listbox2_MouseDoubleClick)
$listbox1.FormattingEnabled = $True
$listbox1.Location = '12, 67'
$listbox1.Name = 'listbox1'
$listbox1.Size = '167, 277'
$listbox1.Sorted = $True
$listbox1.TabIndex = 1
$listbox1.add_MouseDoubleClick($listbox1_MouseDoubleClick)
$buttonOK.Anchor = 'Bottom, Right'
$buttonOK.DialogResult = 'OK'
$buttonOK.Location = '291, 353'
$buttonOK.Name = 'buttonOK'
$buttonOK.Size = '75, 23'
$buttonOK.TabIndex = 0
$buttonOK.Text = '&OK'
$form1.ShowDialog()
Or even this using just the ComboBox elements
Add-Type -AssemblyName System.Windows.Forms
[System.Windows.Forms.Application]::EnableVisualStyles()
$Form = New-Object system.Windows.Forms.Form
$Form.ClientSize = New-Object System.Drawing.Point(498,459)
$Form.text = 'Form'
$Form.TopMost = $false
$Form.StartPosition = 'CenterScreen'
$ComboBox1 = New-Object system.Windows.Forms.ComboBox
$ComboBox1.text = ''
$ComboBox1.width = 216
$ComboBox1.height = 75
@('ComboxItem1','ComboxItem2','ComboxItem3') |
ForEach-Object {[void] $ComboBox1.Items.Add($_)}
$ComboBox1.location = New-Object System.Drawing.Point(31,41)
$ComboBox1.Font = New-Object System.Drawing.Font('Microsoft Sans Serif',10)
$ComboBox2 = New-Object system.Windows.Forms.ComboBox
$ComboBox2.text = ''
$ComboBox2.width = 213
$ComboBox2.height = 38
$ComboBox2.location = New-Object System.Drawing.Point(32,73)
$ComboBox2.Font = New-Object System.Drawing.Font('Microsoft Sans Serif',10)
Function Add-ItemToComboBox2
{
$ComboBox2.Items.Add($ComboBox1.SelectedItem)
$ComboBox2.Refresh()
}
$Form.controls.AddRange(
@(
$ComboBox1,
$ComboBox2
)
)
$ComboBox1.Add_SelectedIndexChanged({ Add-ItemToComboBox2 })
[void]$Form.ShowDialog()
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来源：https://stackoverflow.com/questions/64849654/populate-combobox2-depending-on-combobox1-selection