DevExpress GridControl : Checkedit on Column Trouble

Question

I try to make grid columns during runtime, and one of column using repositorycheckedit, I tried several methods but none worked

here is my code

Dim dtSet As New DataSet()
        Dim dtTable As New DataTable("menu")
        Dim grCol As New DataColumn
        Dim rpChk As New RepositoryItemCheckEdit

        grCol.ColumnName = "smenu"
        grCol.Caption = "Menu"
        dtTable.Columns.Add("Menu")
        dtTable.Columns(0).ColumnName = "smenu"
        dtTable.Columns.Add("New")
        dtTable.Columns(1).ColumnName = "snew"

        dtTable.Rows.Add("Nama", 1)

        dtSet.Tables.Add(dtTable)

        gr.DataSource = dtSet
        gr.DataMember = "menu"

        rpChk.ValueChecked = 1
        rpChk.ValueUnchecked = 0
        grV.Columns("snew").ColumnEdit = rpChk

somehow, the column supposed to show checkbox always grayed out, if i try to mark the checkbox, it will become null after lost focus/change cell

pplease anyone.? thanks

Source #2 (After revised) and still no result as expected

Dim dtTable As New DataTable("menu")
Dim rpChk As New RepositoryItemCheckEdit

dtTable.Columns.Add("Menu")
dtTable.Columns(0).ColumnName = "smenu"
dtTable.Columns.Add("New")
dtTable.Columns(1).ColumnName = "snew"

dtTable.Rows.Add("Nama", CSByte(1))
dtTable.Rows.Add("Nama1", CSByte(0))
dtTable.Rows.Add("Nama2", CSByte(1))
dtTable.Rows.Add("Nama3", CSByte(0))

gr.DataSource = dtTable

rpChk.ValueChecked = 1
rpChk.ValueUnchecked = 0

grV.Columns("snew").ColumnEdit = rpChk

Answer 1

After tried several times, maybe someone needs answer So finally I solved it. When create columns we need to define what type for the columns

dtTable.Columns.Add("Menu",GetType(String))
dtTable.Columns(0).ColumnName = "smenu"
dtTable.Columns.Add("New",GetType(Boolean))
dtTable.Columns(1).ColumnName = "snew"

And things finally worked.