DevExpress xtragrid datetime does not show hours and minutes

Question

In my datagrid I have a DateTime field which does not show the hours and minutes. Well at least it shows 00:00 but my the DateTime value can not be 00:00. I use this time format string "dd-MM-yyyy HH:mm".

When I show the DateTime value inside a popup it shows the hours and minutes (and seconds) so it can't be 00:00:

How can I force the datagrid to show the hours and minutes?

This is my code:

namespace DXWindowsApplication1
{
    public partial class Form1 : XtraForm
    {
        public Form1()
        {
            InitializeComponent();
            InitGrid();

        }
        BindingList<Message> gridDataList = new BindingList<Message>();
        void InitGrid()
        {
            /*gridDataList.Add(new Message("joepie de poepie test \n joep meloen hallo \n mhooooo", "username", new DateTime(2008)));
            gridDataList.Add(new Message("test message 2 \n kitkat android \n toktoktoktotktotktokt", "Pipo", new DateTime(2005)));
            gridDataList.Add(new Message("test message 2 \n kitkat android \n toktoktoktotktotktokt", "Pipo", new DateTime(2006)));
            gridDataList.Add(new Message("test message 2 \n kitkat android \n toktoktoktotktotktokt", "Pipo", new DateTime(2007)));*/
            gridControl1.DataSource = gridDataList;
            gridView1.ExpandAllGroups();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void simpleButton1_Click(object sender, EventArgs e)
        {
            gridDataList.Add(new Message(memoEdit1.Text, "username", DateTime.Now));
            gridView1.ExpandAllGroups();
            memoEdit1.Text = "";
        }

    }
}

This is the autogenerated code:

            // colsendTime
            // 
            this.colsendTime.AppearanceCell.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(128)))), ((int)(((byte)(128)))));
            this.colsendTime.AppearanceCell.Options.UseBackColor = true;
            this.colsendTime.Caption = "Verzonden op";
            this.colsendTime.DisplayFormat.FormatString = "dd-MM-yyyy HH:mm";
            this.colsendTime.DisplayFormat.FormatType = DevExpress.Utils.FormatType.DateTime;
            this.colsendTime.FieldName = "sendTime";
            this.colsendTime.GroupFormat.FormatString = "dd-MM-yyyy HH:mm";
            this.colsendTime.GroupFormat.FormatType = DevExpress.Utils.FormatType.DateTime;
            this.colsendTime.Name = "colsendTime";
            this.colsendTime.OptionsColumn.ReadOnly = true;
            this.colsendTime.UnboundType = DevExpress.Data.UnboundColumnType.DateTime;
            this.colsendTime.Visible = true;
            this.colsendTime.VisibleIndex = 2;

Answer 1

DateTime values are automatically grouped as dates in XtraGrid, unless the column's GroupInterval property is explicitely set to Value.

This behavior is described in the DevExpress documentation on the ColumnGroupInterval enumeration.

Side note: don't set UnboundType property if you're not making any handling of CustomUnboundColumnData.

Answer 2

You can achieve to display time in grid using RepositoryItemDateEdit and assign VistaEditTime = DevExpress.Utils.DefaultBoolean.True

E.g.

DevExpress.XtraEditors.Repository.RepositoryItemDateEdit oItem = New DevExpress.XtraEditors.Repository.RepositoryItemDateEdit();

oItem.DisplayFormat.FormatString = "dd-MM-yyyy HH:mm"
oItem.EditFormat.FormatString = "dd-MM-yyyy HH:mm"
oItem.VistaEditTime = DevExpress.Utils.DefaultBoolean.True
this.colsendTime.ColumnEdit = oItem
this.colsendTime.AppearanceCell.BackColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(128)))), ((int)(((byte)(128)))));
this.colsendTime.AppearanceCell.Options.UseBackColor = true;
this.colsendTime.Caption = "Verzonden op";
this.colsendTime.Name = "colsendTime";
this.colsendTime.OptionsColumn.ReadOnly = true;
this.colsendTime.UnboundType = DevExpress.Data.UnboundColumnType.DateTime;
this.colsendTime.Visible = true;
this.colsendTime.VisibleIndex = 2;