Group by format in LINQ

Question

0.00/5 (No votes)

See more:

I have a recordset rsTaxType and i want to group by a field V_TAX_TYPE_MCD to get the max(D_EFFECTIVE_DATE) in each group .

I have the below query which gives error in line 'Group grc By grc.V_TAX_TYPE_MCD Into Group' saying -
"range variable name can be inferred only from a simple or qualified name with no arguments ".

Can somebody help me in fixing the query ?

VB

Dim grcOrders As DataTable = rsTaxType.DataSet.Tables(0)
Dim query = From grc In grcOrders.AsEnumerable() _
   Group grc By grc.V_TAX_TYPE_MCD Into Group _
   Select V_TAX_TYPE_MCD, maxdate = Group.Max(Function(grc) grc.D_EFFECTIVE_DATE

Posted 4-Nov-11 0:09am

lizbethsaji

Updated 4-Nov-11 0:11am

RaisKazi

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Prerak Patel · Answer 1 · 2011-11-04T00:55:00

Solution 1

Try this

SQL

From grc In grcOrders.AsEnumerable() _
   Group By grc.V_TAX_TYPE_MCD Into maxdate = Max(grc.D_EFFECTIVE_DATE) _
   Select V_TAX_TYPE_MCD,  maxdate

Posted 4-Nov-11 0:55am

Prerak Patel

Updated 4-Nov-11 0:57am

v3