Nullable Date Time Picker
A while back, i was so angry when i was using the .net c# dateTimePicker control on a winform. It did not support null dates. It defaulted to today's date. No matter if i push delete or anything.I decided to write a nullable one. I decided to write this one myself. Well, mostly myself.I got some ideas from usenet. Noone else had a solution that actually worked. I hope it works for you. BTW, in this control that inherits the date time picker, you must bind to BindMe, or else you will loose you null support.
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
namespace DateTimePickerNull
{
public class DateTimePickerNull
: System.Windows.Forms.DateTimePicker
{
public DateTimePickerNull()
{
this.ShowCheckBox=true;
}
public object BindMe
{
get
{
if (this.Checked)
{
return base.Value;
}
else
{
return System.DBNull.Value;
}
}
set
{
if (System.Convert.IsDBNull(value))
{
this.Checked=false;
}
else
{
if (this.Checked==false)
this.Checked=true;
this.Value = Convert.ToDateTime(value);
}
}
}
}
}
4 Comments:
hi man
simple and good solution
thanks 4 help
Tom
Hey, thats great !!!
Finaly a version that works !!!
Now I have to bring it to a DataGridViewColumn.
Thanks a lot.
Thanks, I had searched all weekend for a solution that worked. Simple and easy to support.
Hi I am new in C# could you please send me an example - how you use this class
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