Скопировать содержимое кнопок в текстовое поле?

Поэтому я пытаюсь запрограммировать простой калькулятор. У меня очень простой вопрос. Как я могу скопировать содержимое кнопки в текстовое поле? zB скопируйте Button1 с содержимым 1 в мой TextBox

Это мой код:

$Taschenrechner = New-Object System.Windows.Forms.Form $Taschenrechner.StartPosition = "CenterScreen" $Taschenrechner.Size = New-Object System.Drawing.Size(700,600) $Taschenrechner.Text = "Taschenrechner"  #Titel $Titel = New-Object System.Windows.Forms.Label $Titel.Location = New-Object System.Drawing.Size(200,10)  $Titel.Size = New-Object System.Drawing.Size(320,50)  $Font = New-Object System.Drawing.Font("Arial",30,[System.Drawing.FontStyle]::Regular) $Titel.Font = $Font $Titel.Text = "Taschenrechner" $Titel.Name = "Taschenrechner" $Taschenrechner.Controls.Add($Titel)  #Textbox $Textfeld= New-Object System.Windows.Forms.TextBox  $Textfeld.Location = New-Object System.Drawing.Size(125,100)  $Textfeld.Size = New-Object System.Drawing.Size(100,100) $Textfeld.Width = (300)  $Taschenrechner.Controls.Add($Textfeld)  #1 $button1 = New-Object System.Windows.Forms.Button $button1.Location = New-Object System.Drawing.Size(125,120) $button1.Size = New-Object System.Drawing.Size(100,50) $button1.Text = "1" $button1.Name = "1" $Taschenrechner.Controls.Add($button1)  #2 $button2 = New-Object System.Windows.Forms.Button $button2.Location = New-Object System.Drawing.Size(225,120) $button2.Size = New-Object System.Drawing.Size(100,50) $button2.Text = "2" $button2.Name = "2" $Taschenrechner.Controls.Add($button2)  #3 $button3 = New-Object System.Windows.Forms.Button $button3.Location = New-Object System.Drawing.Size(325,120) $button3.Size = New-Object System.Drawing.Size(100,50) $button3.Text = "3" $button3.Name = "3" $Taschenrechner.Controls.Add($button3)  #4 $button4 = New-Object System.Windows.Forms.Button $button4.Location = New-Object System.Drawing.Size(125,170) $button4.Size = New-Object System.Drawing.Size(100,50) $button4.Text = "4" $button4.Name = "4" $Taschenrechner.Controls.Add($button4)  #5 $button5 = New-Object System.Windows.Forms.Button $button5.Location = New-Object System.Drawing.Size(225,170) $button5.Size = New-Object System.Drawing.Size(100,50) $button5.Text = "5" $button5.Name = "5" $Taschenrechner.Controls.Add($button5)  #6 $button6 = New-Object System.Windows.Forms.Button $button6.Location = New-Object System.Drawing.Size(325,170) $button6.Size = New-Object System.Drawing.Size(100,50) $button6.Text = "6" $button6.Name = "6" $Taschenrechner.Controls.Add($button6)  #7 $button7 = New-Object System.Windows.Forms.Button $button7.Location = New-Object System.Drawing.Size(125,220) $button7.Size = New-Object System.Drawing.Size(100,50) $button7.Text = "7" $button7.Name = "7" $Taschenrechner.Controls.Add($button7)  #8 $button8 = New-Object System.Windows.Forms.Button $button8.Location = New-Object System.Drawing.Size(225,220) $button8.Size = New-Object System.Drawing.Size(100,50) $button8.Text = "8" $button8.Name = "8" $Taschenrechner.Controls.Add($button8)  #9 $button9 = New-Object System.Windows.Forms.Button $button9.Location = New-Object System.Drawing.Size(325,220) $button9.Size = New-Object System.Drawing.Size(100,50) $button9.Text = "9" $button9.Name = "9" $Taschenrechner.Controls.Add($button9)  #0 $button0 = New-Object System.Windows.Forms.Button $button0.Location = New-Object System.Drawing.Size(125,270) $button0.Size = New-Object System.Drawing.Size(100,50) $button0.Text = "0" $button0.Name = "0" $Taschenrechner.Controls.Add($button0)   [void] $Taschenrechner.ShowDialog()