電源外殼組合框加載默認值$ array

Question

我想知道是否有人知道一種方法來設置電源外殼組合框的默認值？我希望它顯示數組中的第一個對象$ OperatingSystemArray我加載時已設置。

這裏是我的代碼

$global:ComputerList = Get-Content c:\HostList.txt 

# This holds the choices fro the Drop Down Menu 

[array]$OperatingSystemArray = "-------------","Windows XP", "Windows 7" 

# This function will grab a list of computers to work with from a .txt file 

function Get-ComputerList { 
    Write-Output " List of Computers VMRest is going to be applied to:`n" 
    Foreach ($Computer in $global:ComputerList) { 
     Write-Output "  $Computer" 
    } 
    Write-Output "`n--------------------------------------------------------`n" 
} 

# This function will return the results of the $OperatingSystemArray and the execute commands based on the selection 

function Get-OperatingSystems { 

$Choice = $OSChoice.SelectedItem.ToString() 

# Call correct function to run correct code 

if ($Choice -match 'XP') { 
    Write-Output "$Choice Base Machines selected" 
    OS-WindowsXp 
} 
elseif ($Choice -match '7') { 
    Write-Output "$Choice Base Machines selected" 
    OS-Windows7 
} 
else { 
    Write-Output "No valid Operating System Seleted" 
} 
} 

# This function will be called for the base machines that are running Windows XP 

function OS-WindowsXp { 
    Foreach ($Computer in $global:ComputerList) { 
     Write-Output "Starting VMReset on $Computer" 
    } 
} 

# This function will be called for the base machines that are running Windows 7 

function OS-Windows7 { 
    Foreach ($Computer in $global:ComputerList) { 
     Write-Output "Starting VMReset on $Computer" 
    } 
} 

[void][System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms") | Out-Null 
[void][System.Reflection.Assembly]::LoadWithPartialName("System.Drawing") | Out-Null 
[void][System.Windows.Forms.Application]::EnableVisualStyles() 
[void][System.Windows.Forms.ComboBoxStyle]::DropDown 

# This creates a new form 

$Main = New-Object System.Windows.Forms.Form 

# This sets the form options 

$Main.minimumSize = New-Object System.Drawing.Size(800,600) 
$Main.maximumSize = New-Object System.Drawing.Size(800,600) 
$Main.Text = "VMWare Reset" 
$Main.StartPosition = "CenterScreen" 
$Main.ShowInTaskbar = $False 


# This sets the drop down options 

$OSChoice = New-Object System.Windows.Forms.ComboBox 
$OSChoice.Location = New-Object System.Drawing.Size(400,10) 
$OSChoice.Font = New-Object System.Drawing.Font("Courier New",16,0,3,0) 
$OSChoice.Size = New-Object System.Drawing.Size(200,30) 
$OSChoice.DropDownStyle = [System.Windows.Forms.ComboBoxStyle]::DropDownList 

# This For-Loop populates the $OSChoice items from $OperatingSystemArray 

ForEach ($Item in $OperatingSystemArray) { 
    $OSChoice.Items.Add($Item) 
} 

# This adds the $OSChoice Item to the gui 

$Main.Controls.Add($OSChoice) 

# This sets the $OSChoice label options 

$OSChoiceLabel = New-Object System.Windows.Forms.Label 
$OSChoiceLabel.Location = New-Object System.Drawing.Size(10,10) 
$OSChoiceLabel.Font = New-Object System.Drawing.Font("Courier New",16,0,3,0) 
$OSChoiceLabel.Size = New-Object System.Drawing.Size(300,30) 
$OSChoiceLabel.Text = "Base Machine Operating System" 

# This adds the $OSChoiceLabel Item to the gui 

$Main.Controls.Add($OSChoiceLabel) 

# This sets up the button options 
$ExecuteButton = New-Object System.Windows.Forms.Button 
$ExecuteButton.Location = New-Object System.Drawing.Size(650,10) 
$ExecuteButton.Size = New-Object System.Drawing.Size(100,30) 
$ExecuteButton.Text = "Execute Reset" 
$ExecuteButton.Add_Click({ 

    Get-OperatingSystems 

    if ($SaveToCheckBox.Checked -eq $True) { 
     Write-Output "Saving output to file" 
    } 
    else { 
     Write-Output "Not saving output to file" 
    } 
}) 

# This adds the $ExecuteButton Item to the gui 

$Main.Controls.Add($ExecuteButton) 

# This sets up the $CloseButton Item to the gui 



# This sets up the output window for the gui 

$OutputBox = New-Object System.Windows.Forms.RichTextBox 
$OutputBox.Text = '' 
$OutputBox.Name = 'OutputBox' 
$OutputBox.Font = New-Object System.Drawing.Font("Courier New",16,0,3,0) 
$System_Drawing_Size = New-Object System.Drawing.Size 
$System_Drawing_Size.Width = 760 
$System_Drawing_Size.Height = 460 
$OutputBox.Size = $System_Drawing_Size 
$OutputBox.DataBindings.DefaultDataSourceUpdateMode = 0 
$System_Drawing_Point = New-Object System.Drawing.Point 
$System_Drawing_Point.X = 10 
$System_Drawing_Point.Y = 50 
$OutputBox.Location = $System_Drawing_Point 

# This adds the Output box to the GUI 

$Main.Controls.Add($OutputBox) 

# This adds a checkbox to the GUI 

$SaveToCheckBox = New-Object System.Windows.Forms.CheckBox 
$SaveToCheckBox.Text = 'Save to File?' 
$SaveToCheckBox.Name = 'SaveToCheckBox' 
$SaveToCheckbox.Font = New-Object System.Drawing.Font("Courier New",16,0,3,0) 
$SaveToCheckBox.DataBindings.DefaultDataSourceUpdateMode = 0 
$System_Drawing_Size = New-Object System.Drawing.Size 
$System_Drawing_Size.Width = 200 
$System_Drawing_Size.Height = 30 
$SaveToCheckBox.Size = $System_Drawing_Size 
$System_Drawing_Point = New-Object System.Drawing.Point 
$System_Drawing_Point.X = 550 
$System_Drawing_Point.Y = 530 
$SaveToCheckBox.Location = $System_Drawing_Point 

# Default is set to false if you want to log the output to a file set to $True 

$SaveToCheckBox.Checked = $Flase 

$Main.Controls.Add($SaveToCheckBox) 

Get-ComputerList 

# This function displays the output to a text box within the gui 

function Write-Output { 
    param([string]$msg) 
    $OutputBox.Text += "$msg`n" 
    $OutputBox.SelectionStart = $OutputBox.Text.Length - 1; 
    $OutputBox.ScrollToCaret(); 
} 

# This activates and shows the gui 
$Main.Add_Shown({ 
$Main.Activate() 
}) 
[void]$Main.ShowDialog() | Out-Null 

Answer 1

你嘗試在$ OSChoice控制的SelectedItem屬性設置爲默認值？

以下是我正在查看的代碼片段。這是相當普遍的，但它是做什麼你問：

function set-controlvalue{ 
param($control, 
     $value) 
     switch ($control.GetType().Name) { 
     'TextBox' { 
      $control.Text=$value 
     } 
     'ComboBox' { 
      $control.SelectedItem=$value