Hi John,

The day of week is not support in edit mode. So, you may set DisplayModeFormat for that. Below is example:
<igtxt:WebDateTimeEdit ID="WebDateTimeEdit1" runat="server" Width="250px" EditModeFormat="MM/dd/yyyy hh:mm:ss tt" DisplayModeFormat="dddd, MMMM dd yyyy hh:mm:ss tt"></igtxt:WebDateTimeEdit>

hi,

This solution is fine But if I want the date to be displayed as

Monday, December 31 2009 12:00:00 AM

Then what do I need to set for EditModeFormat property of WebDatetimeEdit. 

In last response I accidentally pasted wrong line from my sample. It should be
this.UltraWebGrid1.Columns[3].EditorControlID = this.WebDateTimeEdit1.UniqueID;
but not
this.UltraWebGrid1.Columns[3].EditorControlID = this.WebDateChooser1.UniqueID;

Hi,

I tried again to test WebDateTimeEdit with grid and it worked correctly. I could not reproduce swapped month/day fields.
WebDateTimeEdit in aspx appeared as
<igtxt:WebDateTimeEdit ID="WebDateTimeEdit1" runat="server" EditModeFormat="dd/MM/yyyy hh:mm tt"></igtxt:WebDateTimeEdit>
It was assigned to grid by
protected void UltraWebGrid1_InitializeLayout(object sender, LayoutEventArgs e)
{
  this.UltraWebGrid1.Columns[3].Type = Infragistics.WebUI.UltraWebGrid.ColumnType.Custom;
  this.UltraWebGrid1.Columns[3].EditorControlID = this.WebDateChooser1.UniqueID;
}
And grid was filled with data
void UltraWebGrid1_InitializeDataSource(object sender, Infragistics.WebUI.UltraWebGrid.UltraGridEventArgs e)
{
 DataTable dt = new DataTable("Customer");
 dt.Columns.Add("CustomerID", typeof(int));
 dt.Columns.Add("CustomerName", typeof(string));
 dt.Columns.Add("Address", typeof(string));
 dt.Columns.Add("DateOfJoin", typeof(DateTime));
 dt.Rows.Add(new object[] { 2, "Walter Smith", "12/4 S MarkD", new DateTime(2009, 10, 20) });
 ...
 this.UltraWebGrid1.DataSource = dt;
}

I tested recently built dlls. That is possible that older versions of grid may have some issues. Please update NetAdvantage with latest service release.

Probe with this format...

wdteControl.EditModeFormat = "dd/MM/yyyy hh:mm tt";