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Private Sub CommandButton1_Click()
If ComboBox1.ListIndex > 0 Then
Rows(ComboBox1.ListIndex + 1).Delete
TextBox1 = ""
TextBox2 = ""
TextBox3 = ""
UserForm_Initialize
End If
End Sub

Private Sub CommandButton2_Click()
Dim xZeile As Long
If TextBox1 = "" Then Exit Sub
If ComboBox1.ListIndex = 0 Then
xZeile = [A65536].End(xlUp).Row + 1
Else
xZeile = ComboBox1.ListIndex + 1
End If
Cells(xZeile, 1) = TextBox1
Cells(xZeile, 2) = TextBox2
Cells(xZeile, 3) = TextBox3
TextBox1 = ""
TextBox2 = ""
TextBox3 = ""
Columns("A:C").Sort Key1:=Range("A2"), Order1:=xlAscending, Header:=xlGuess, _
OrderCustom:=1, MatchCase:=False, Orientation:=xlTopToBottom
UserForm_Initialize
End Sub