Hello John,
I would suggest creating a custom RadDateTimePicker and create an an FormatProvider event, that would handle the value changed event of the control, in order to change the display text based on one of your methods of date conversion.
using System.Windows.Forms;
using Telerik.WinControls.UI;
namespace TestDateTimePickerCustomFormat
{
using System;
using System.Drawing;
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
this.Load += new EventHandler(Form1_Load);
this.Size = new Size(200, 60);
}
void Form1_Load(object sender, EventArgs e)
{
var customDateTimePicker1 = new CustomDateTimePicker();
customDateTimePicker1.Dock = DockStyle.Fill;
this.Controls.Add(customDateTimePicker1);
customDateTimePicker1.Format = DateTimePickerFormat.Custom;
customDateTimePicker1.FormatProvider += radDateTimePicker1_FormatProvider;
customDateTimePicker1.Value = DateTime.Now;
}
string radDateTimePicker1_FormatProvider(object sender, CustomFormatProviderEventArgs args)
{
// get the required string value here
return args.CurrentDate.ToShortDateString();
}
}
public class CustomDateTimePicker : RadDateTimePicker
{
public delegate string CustomFormatProviderEventHandler(object sender, CustomFormatProviderEventArgs date);
public event CustomFormatProviderEventHandler FormatProvider;
protected override void OnValueChanged(EventArgs e)
{
base.OnValueChanged(e);
if (this.Format == DateTimePickerFormat.Custom && this.FormatProvider != null)
{
this.DateTimePickerElement.TextBoxElement.Text = this.FormatProvider(this, new CustomFormatProviderEventArgs(this.Value));
}
}
}
public class CustomFormatProviderEventArgs : EventArgs
{
public DateTime CurrentDate { get; set; }
public CustomFormatProviderEventArgs()
{
}
public CustomFormatProviderEventArgs(DateTime dateTime)
{
this.CurrentDate = dateTime;
}
}
}
Hope this will help, please let me know if there is anything else i can help you with.
Best Regards,
Emanuel Varga