Powershell winforms在子窗体中引用父窗体

Question

我很难以子女的形式引用父母形式。 为此，我嘲笑了一个小片段。我知道我必须将父属性分配给子女形式，但是到目前为止，我还没有成功。请告知，

Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing

#### PARENT FORM

$date = New-Object System.Windows.Forms.Form
$date.Text = 'Date'
$date.Size = New-Object System.Drawing.Size @(243,230)
$date.StartPosition = 'CenterScreen'

$OKButton = New-Object System.Windows.Forms.Button
$OKButton.Location = New-Object System.Drawing.Point(75,120)
$OKButton.Size = New-Object System.Drawing.Size(75,23)
$OKButton.Text = 'OK'
$OKbutton.Add_Click({$kibel.showdialog()})
$date.Controls.Add($OKButton)

$date_label = New-Object System.Windows.Forms.Label
$date_label.Location = New-Object System.Drawing.Point(75,70)
$date_label.Size = New-Object System.Drawing.Size(75,23)
$date_label.BorderStyle = 'Fixed3D'
$date_label.Add_Click({$kibel.showdialog()})
$date.Controls.Add($date_label)

##### CHILD FORM

$kibel = New-Object System.Windows.Forms.Form
$kibel.Text = 'Date'
$kibel.Size = New-Object System.Drawing.Size @(243,230)
$kibel.StartPosition = 'CenterScreen'

$kibel_texbox= New-Object System.Windows.Forms.TextBox
$kibel_texbox.Location = New-Object System.Drawing.Point(75,70)
$kibel_texbox.Size = New-Object System.Drawing.Size(75,23)
$kibel.Controls.Add($kibel_texbox)

$kibel_button = New-Object System.Windows.Forms.Button
$kibel_button.Location = New-Object System.Drawing.Point(75,120)
$kibel_button.Size = New-Object System.Drawing.Size(75,23)
$kibel_button.Text = 'KIBEL'
$kibel_button.Add_Click({$kibel.Parent.Controls['date_label'].Text ='done'})
$kibel.Controls.Add($kibel_button)



$date.ShowDialog()

因为现在我已经获得无法将其索引到null数组错误

Answer 1

您需要解决两个问题：

• 您需要使用所有者属性来指定
• 您尚未分配给 name $ date_label <的 父/拥有表格 /code>控制，so controls ['date_label']无法

通过将父式表单实例分配给所有者属性来解决第一个问题。子女表格：

$kibel = New-Object System.Windows.Forms.Form
$kibel.Text = 'Date'
$kibel.Size = New-Object System.Drawing.Size @(243,230)
$kibel.StartPosition = 'CenterScreen'
# designate owning form
$kibel.Owner = $date

然后，要命名标签，请在定义$ date_label之后添加此标签：

$date_label.Name = 'date_label'

最后，要通过父表正确解析控件，请更改单击事件处理程序以下内容：

$kibel_button.Add_Click({$kibel.Owner.Controls['date_label'].Text ='done'})