如何在powershell GUI中为tabcontrol启用滚动按钮

Add-Type -AssemblyName System.Windows.Forms

# 创建窗体
$form = New-Object System.Windows.Forms.Form
$form.Size = New-Object System.Drawing.Size(400, 300)

# 创建TabControl
$tabControl = New-Object System.Windows.Forms.TabControl
$tabControl.Size = New-Object System.Drawing.Size(380, 250)
$tabControl.Location = New-Object System.Drawing.Point(10, 10)

# 添加Tab页
$tabPage1 = New-Object System.Windows.Forms.TabPage
$tabPage1.Text = "Tab 1"
$tabControl.TabPages.Add($tabPage1)

$tabPage2 = New-Object System.Windows.Forms.TabPage
$tabPage2.Text = "Tab 2"
$tabControl.TabPages.Add($tabPage2)

$tabPage3 = New-Object System.Windows.Forms.TabPage
$tabPage3.Text = "Tab 3"
$tabControl.TabPages.Add($tabPage3)

# 创建滚动按钮
$scrollUpButton = New-Object System.Windows.Forms.Button
$scrollUpButton.Text = "↑"
$scrollUpButton.Size = New-Object System.Drawing.Size(30, 30)
$scrollUpButton.Location = New-Object System.Drawing.Point(10, 270)

$scrollDownButton = New-Object System.Windows.Forms.Button
$scrollDownButton.Text = "↓"
$scrollDownButton.Size = New-Object System.Drawing.Size(30, 30)
$scrollDownButton.Location = New-Object System.Drawing.Point(50, 270)

# 添加控件到窗体
$form.Controls.Add($tabControl)
$form.Controls.Add($scrollUpButton)
$form.Controls.Add($scrollDownButton)

# 滚动按钮的事件处理程序
$scrollUpButton.Add_Click({
    if ($tabControl.SelectedIndex -gt 0) {
        $tabControl.SelectedIndex--
    }
})

$scrollDownButton.Add_Click({
    if ($tabControl.SelectedIndex -lt ($tabControl.TabCount - 1)) {
        $tabControl.SelectedIndex++
    }
})

# 运行窗体
$form.ShowDialog()