Entity Framework Update Statement - vb.net

Question

I'm trying to update a specific record based off of a users selection. Regarding Entity Framework syntax, I'm not very familiar. Is it possible to achieve this SQL statement in Entity FrameWork?
Thank you!
update Table1
set Colum1='1'
where Column2='1234567'

Answer 1

var record = _db.Table1.where(r => r.Column2 == '1234567');
record.Column1 = '1'
_db.SaveChanges();
where _db is the Entity Framework DbContext class...
HTH.

Answer 2

Yes, Linq Version:
Table1Entity entity = from e in dbContext.Table1Entitys
where e.Column2 = '1234567'
select e
entity.Column1 = '1';
dbContext.SaveChanges();
And looks like Sunny has the Lambda version.
However, neither this nor Sunny's answer produces the exact SQL because they both actually produce a SELECT and an UPDATE:
SELECT <all columns>
FROM <table>
WHERE Column2 = '1234567'
UPDATE <table>
SET <allcolumns> = <allvalues>, etc etc
WHERE Column2 = '1234567'
If you want to just an UPDATE, then you would do something like:
var row = new Row();
// assuming a single column PK (id)
row.Column1 = '1';
row.Column2 = '1234567';
dbContext.Attach(row);
var entity = dbContext.Entity(entity);
entity.Property(e => e.Column2).IsModified = true;
dbContext.SaveChanges();
produces exactly:
UPDATE <Table>
SET Column2 = '1234567'
WHERE Column1 = '1'

Answer 3

// Note: ctx = your DbContext
var tbl1 = (from t in ctx.Table1 where t.Id == 1234567 select t).FirstOrDefault();
if (tbl1 != null) {
tbl1.Column1 = "1";
ctx.SaveChanges();
}