Question

Add a DateTimePicker, two TextBoxes and two Buttons to a Form

Add the following code:

Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
    DateTimePicker1.Enabled = True
    TextBox1.Enabled = True
    TextBox2.Enabled = True
    TextBox1.BackColor = DateTimePicker1.BackColor
    TextBox2.BackColor = Color.FromArgb(DateTimePicker1.BackColor.A, DateTimePicker1.BackColor.R, DateTimePicker1.BackColor.G, DateTimePicker1.BackColor.B)
End Sub

Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click
    DateTimePicker1.Enabled = False
    TextBox1.Enabled = False
    TextBox2.Enabled = False
    TextBox1.BackColor = DateTimePicker1.BackColor
    TextBox2.BackColor = Color.FromArgb(DateTimePicker1.BackColor.A, DateTimePicker1.BackColor.R, DateTimePicker1.BackColor.G, DateTimePicker1.BackColor.B)
End Sub

In all cases the BackColor read back from the DateTimePicker, TextBox1 and TextBox2 has the same ARGB values

But when Button2 is clicked, TextBox1‘s BackColor on screen is actually F0F0F0 (from screen grab colour picker)- Is there an explanation for this?

I assume this applies to C# as well – hence the tag.

Answer 1

You could use the ReadOnly property instead of Enabled property to control editable behavior and assign custom BackColor.