WPF application Linq to sql getting data - sql

Question

I'm making a WPF application with a datagrid that displays some sql data.
Now i'm making a search field but that doesn't seem to work:
Contactpersoon is an nvarchar
bedrijf is an nvarchar
but
LeverancierPK is an INT
How can I combinate that in my search?
If i convert LeverancierPK to string, then I can use Contains but that gives me an error
//Inisiatie
PRCEntities vPRCEntities = new PRCEntities();
var vFound = from a in vPRCEntities.tblLeveranciers
where ((((a.LeverancierPK).ToString()).Contains(vWoord)) ||
(a.Contactpersoon.Contains(vWoord)) ||
(a.Bedrijf.Contains(vWoord)))
orderby a.LeverancierPK
select a;
myDataGrid_Leveranciers.ItemsSource = vFound;
Thanks

Answer 1

If you don't care about pulling all records back from the DB (which in your answer you pulled everything back), then you can just do a .ToList() before the where clause.
var vFound = vPRCEntities.tblLeveranciers.ToList()
.Where(a => a.LeverancierPK.ToString().Contains(vWoord)) ||
a.Contactpersoon.Contains(vWoord) ||
a.Bedrijf.Contains(vWoord))
.OrderBy(a.LeverancierPK);

Answer 2

This code can do what I was looking for but I think it could be alot shorter.
PRCEntities vPRCEntities = new PRCEntities();
var vFound = from a in vPRCEntities.tblLeveranciers
orderby a.LeverancierPK
select a;
myDataGrid_Leveranciers.ItemsSource = null;
myDataGrid_Leveranciers.Items.Clear();
foreach (var item in vFound)
{
if (item.Bedrijf.Contains(vWoord))
{
myDataGrid_Leveranciers.Items.Add(item);
}
else
{
if (item.LeverancierPK.ToString().Contains(vWoord))
{
myDataGrid_Leveranciers.Items.Add(item);
}
else
{
if (item.Contactpersoon != null)
{
if (item.Contactpersoon.Contains(vWoord))
{
myDataGrid_Leveranciers.Items.Add(item);
}
}
}
}
}