vb.net access input mask

wheree do i write this?

I would use a DateTimePicker control. check http://msdn.microsoft.com/en-us/library/4xyy1csh.aspx

thanks but the user want to put a time not the time from now he want to put any time he want how do he make a input mask?

As mentioned above, there are 2 ways to do it: MaskedTextBox or DateTimePicker.

1. To implement MaskedTextBox, in design time, double click on MaskedTextBox in the Toolbox (See screen shot 1). Then change its Mask property to ##:## ##/##/#### (see screen shot 2).

2. To implement DataTimePicker, in design time, double click on DataTimePicker in to toolbox (see screen shot 3). Then change its Format property to Custom and set its CustomFormat property to HH:mm MM/dd/yyyy (see screen shot 4).

Hope it helps.

MaskedTextBox.PNG
Mask.PNG
DateTimePicker.PNG
Format.PNG

so how  does one (datepiker)get to  my textbox with this ?

you get rid of your textbox, you replace it with the datetimepicker control

Just use ONE of them.
If using MaskedTextBox, do not use DateTimePicker. To get value from MaskedTextBox, use MaskedTextBox1.Text.

If using DateTimePicker, do not use MaskedTextBox. To get value from DateTimePicker, use DateTimePicker1.Value.