Getting a bool value from DataTable with linq - mysql

Question

I have to fill a DataGrid using a DataTable, and linq. The DataTable contains a MySql table (i am using linq to optimize the program in terms of network traffic), but when the linq tries to get the boolean values from the DataTAble i get an "InvalidCastException" exc. with "The 'OneWay' or 'TwoWay' binging can not work..." text. Is there any way to make it work? (sry for bad eng)
string q = "Select * from `beszallitoi_megrendeles` "
+ "where megrendelt='1' and beerkezett='0' "
+ "order by megrendeles_datuma desc;";
parancs = new MySqlCommand(q, Kapcsolat);
Kapcsolat.Open();
parancs.ExecuteNonQuery();
MySqlDataAdapter mda = new MySqlDataAdapter(parancs);
DataTable dt = new DataTable("beszallitoi_megrendeles");
mda.Fill(dt);
mda.Update(dt);
...
var results = from a in dt.AsEnumerable()
select new
{
AZ = a.Field<int>("AZ"),
MEGRENDEL = a.Field<DateTime>("MEGRENDEL"),
KERTSZDATUM = a.Field<DateTime>("KERTSZDATUM"),
VEVO_CSOPORT = a.Field<string>("VEVO_CSOPORT"),
ROVIDVEVONEV = a.Field<string>("ROVIDVEVONEV"),
GYARTO = a.Field<string>("GYARTO"),
MEGNEVEZES = a.Field<string>("MEGNEVEZES"),
DARAB = a.Field<int>("DARAB"),
MEGJEGYZES = a.Field<string>("MEGJEGYZES"),
RENDSZAM = a.Field<string>("RENDSZAM"),
BRENDSZAM = a.Field<string>("BRENDSZAM"),
ROGNEV = a.Field<string>("ROGNEV"),
BESZALLITO = a.Field<string>("BESZALLITO"),
MEGREND = a.Field<DateTime>("MEGREND"),
VARERK = a.Field<DateTime>("VARERK"),
CSKULD = a.Field<string>("CSKULD"),
MEGJEGY2 = a.Field<string>("MEGJEGY2"),
BMEGREND = a.Field<bool>("BMEGREND"),
BERKDAT = a.Field<DateTime>("BERKDAT"),
BEERK = a.Field<bool>("BEERK")
};
DgUjMegrendeles.ItemsSource = results;
EDIT:
Here is the boolean column: ( i modified the mode from "TwoWay" to "OneWay" then "OneTime" but this way all the rows had true values)
<DataGridCheckBoxColumn Width="45" Header="MREND." Binding="{Binding BMEGREND, Mode=OneTime, UpdateSourceTrigger=PropertyChanged}"/>

Answer 1

The anonymous type you're creating (new { AZ = ... }) has read only properties. You are trying to bind to something using a TwoWay binding mode. You will have to set the binding mode to OneWay or OneTime. You don't show your XAML, however.