Probably a waste of time. You can format the input any way you want but you will need to check for all kinds of different input. for example they could enter the month first, no leading zeros , 4 digit year. You would need to check for all that. month and day swamped would be impossible. A DateTimePicker would work well.
Add a datetimepicker to the form
Set the following properties
Format = Custom
CustomFormat = "MM / dd / yy"
ShowUpDown = True
With that the format will always be the way you want it.
I completely agree with Unhnd. This is a waste of time. What if user inserts some other numbers, like 123456?
This will never work well.
You have to force user to SELECT a date, so choose between datetimepicker, or monthcalendar. I know I would defenatelly - bad experiances from before - belive me.
I would go with u both Mitja and Unhnd but what if we give the code in specific format
like if we tell the user to enter the date suppose yyddmm format and on validating event check and then convert the date....if not possible print error msg and if correct show the format...
like the one below....correct me if I m wrong....i know its waste of time for manual entry since user can enter any garbage value....
this code I have written in textbox validating event.
Dim strDate As String = TextBox1.Text
Dim d As Date = New Date(2000 + strDate.Substring(0, 2), strDate.Substring(2, 2), strDate.Substring(4, 2))
Label6.Text = d.ToString("yyyy/MM/dd") 'Label6 will display the date
Catch ex As Exception
the datetimepicker is the best option to work upon