In my grid, i have a column with repositorylookupedit. I bind data form database to this column. My probelm is the value in repositorylookupedit disappear when i click on another row or another control.

How can i solve this problem?

I think it's just a little problem, but i'm a newbie in Dev. Hope for help. Thanks

The field that your column is bound to in the GridView should match the field that is set as the EditValue in your LookupEdit. Is this how you have it set up?

I have read this article http://www.devexpress.com/Support/Center/KB/p/A1023.aspx but the problem didn't solve. I set repositoryItemLookUpRoom.ThrowExceptionOnInvalidLookUpEditValueType = true; and it doesn't thown any exception. And i can get ValueMember of repositorylookupedit.

Can anyone help me?

Thank Brendon. But can you show me more detail? The LookupEdit has EditValue property, but the repositorylookupedit doesn't

Here is my code:

private void XFrmRoomBooking_Load(object sender, EventArgs e)
        {

               DAO.RoomDAO roomDAO = new HotelManagement.DAO.RoomDAO(_connectionString);
            emptyRooms = roomDAO.GetRoomByRoomTypeID(roomTypeID);
            repositoryItemLookUpRoom.DisplayMember = "MaPhong";
            repositoryItemLookUpRoom.ValueMember = "PhongID";
            repositoryItemLookUpRoom.Columns.Add(new DevExpress.XtraEditors.Controls.LookUpColumnInfo("MaPhong", "Phòng",             40));
            repositoryItemLookUpRoom.DataSource = emptyRooms;
            repositoryItemLookUpRoom.ThrowExceptionOnInvalidLookUpEditValueType = true;

        }

Did i miss something?

Sorry, i forgot one thing. lookupedit column is unbound column. What should i do with CustomUnboundColumnData event. I'm really confused with this event

My problem is still unsolved. Can anyone suggest me something?