datetimepicker won't let me use fractions of a second?

  • Thread starter Thread starter jleslie48
  • Start date Start date
J

jleslie48

Using format: custom,

I try and enter: "yyyy-MM-dd HH:mm:ss ffff"

but no matter what I do, the display shows the letters ffff instead of
the 4 digits of the fractional part of the second and the input box
wont let me type on the ffff letters. Any ideas?


//
// dateTimePicker1
//
this.dateTimePicker1.AllowDrop = true;
this.dateTimePicker1.CustomFormat = "yyyy-MM-dd HH:mm:ss
ffff";
this.dateTimePicker1.Format =
System.Windows.Forms.DateTimePickerFormat.Custom;
this.dateTimePicker1.Location = new
System.Drawing.Point(12,27);
this.dateTimePicker1.MaxDate = new
System.DateTime(2100,12,31,0,0,0,0);
this.dateTimePicker1.MinDate = new
System.DateTime(1990,1,1,0,0,0,0);
this.dateTimePicker1.Name = "dateTimePicker1";
this.dateTimePicker1.Size = new System.Drawing.Size(202,20);
this.dateTimePicker1.TabIndex = 9;
this.dateTimePicker1.ValueChanged += new
System.EventHandler(this.dateTimePicker1_ValueChanged);
//
 
Using format:  custom,

I try and enter:  "yyyy-MM-dd HH:mm:ss ffff"

but no matter what I do, the display shows the letters ffff instead of
the 4 digits of the fractional part of the second and the input box
wont let me type on the ffff letters.  Any ideas?

//
        // dateTimePicker1
        //
        this.dateTimePicker1.AllowDrop = true;
        this.dateTimePicker1.CustomFormat = "yyyy-MM-dd  HH:mm:ss
ffff";
        this.dateTimePicker1.Format =
System.Windows.Forms.DateTimePickerFormat.Custom;
        this.dateTimePicker1.Location = new
System.Drawing.Point(12,27);
        this.dateTimePicker1.MaxDate = new
System.DateTime(2100,12,31,0,0,0,0);
        this.dateTimePicker1.MinDate = new
System.DateTime(1990,1,1,0,0,0,0);
        this.dateTimePicker1.Name = "dateTimePicker1";
        this.dateTimePicker1.Size = new System.Drawing.Size(202,20);
        this.dateTimePicker1.TabIndex = 9;
        this.dateTimePicker1.ValueChanged += new
System.EventHandler(this.dateTimePicker1_ValueChanged);
        //
Click to expand...

for reference: I'm on Windows XP professional, with MS visual C#
2010 express
 
ok, this is the only article I can find on the subject:

http://social.msdn.microsoft.com/Forums/en-US/winforms/thread/0743e1a9-e7be-4b1a-8fa2-59855c1f450a

it says its an "undocumented MS feature" that datetimepicker in
fractions is broken...err, designed to not do fractions.
can anybody confirm or deny this?

I guess my best solution is to make up a new input box for the
fraction part?
Click to expand...

When I look at the docs at:

http://msdn.microsoft.com/en-us/library/system.windows.forms.datetimepicker.customformat.aspx
then it list the supported format strings and f is
not among them, so I would say that the code behaves
as it is documented to behave.

Arne
 
it says its an "undocumented MS feature" that datetimepicker in
fractions is broken...err, designed to not do fractions.
can anybody confirm or deny this?
Click to expand...

I have to ask: when would you expect an average user to enter fractions of a
second? In other words, I think MS designed the date/time picker with the
80/20 rule in mind (although this sounds more like the 99/1 rule) and didn't
allow for what they considered to be a fringe case.
 
I have to ask: when would you expect an average user to enter fractions of a
second? In other words, I think MS designed the date/time picker with the
80/20 rule in mind (although this sounds more like the 99/1 rule) and didn't
allow for what they considered to be a fringe case.
Click to expand...

Well I dump data from an oscilliscope into csv files and things are
measured in nanoseconds. I'm not the only one, and more to the point,
when you implement a standard, such as hh:mm:ss.ffffffff it it too
much to ask to actually program it????
 
Well I dump data from an oscilliscope into csv files and things are
measured in nanoseconds. I'm not the only one, and more to the point,
when you implement a standard, such as hh:mm:ss.ffffffff it it too
much to ask to actually program it????
Click to expand...

But it did not implement such a standard.

The documentation is very clear - it does not support f.

The code works as the documentation says it work.

Arne
 
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