Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

LINQ to SQL

Posted on 2013-06-06
5
Medium Priority
?
379 Views
Last Modified: 2013-06-10
Hello Experts,
i want to write LINQ for the following SQL in C#:

If Not EXISTS(Select * from OrderPayment
Where OrderHeaderId = 72884643 and TransactionTypeId = 52)

any idea?

Thanks
0
Comment
Question by:mani_sai
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
5 Comments
 
LVL 9

Assisted Solution

by:Aeriden
Aeriden earned 800 total points
ID: 39227196
var q = From op In db.OrderPayment Where op.OrderHeaderId == 72884643 && op.TransactionTypeId == 52
if (q.Any())
{
  // do something if there are records
}
0
 
LVL 64

Expert Comment

by:Fernando Soto
ID: 39227911
Hi mani_sai;

The following code snippet should do what you need. Note there are two options 1 if you expect to have returned a collection of records and the other if you will be returning one or non.

Dim ohId = 72884643
Dim ttId = 52

// This version is used if the result set returned from the query can hev more then one record.
Dim oPayment = (From o in DataContextInstance.OrderPayment
                Where o.OrderHeaderId = ohId And o.TransactionTypeId = ttId
                Select o).ToList()

If Not oPayment.Any() Then
    ' No Records Returned
End If
                
// This query is used if there can be only one record returned or no records returned.   
Dim oPayment = (From o in DataContextInstance.OrderPayment
                Where o.OrderHeaderId = ohId And o.TransactionTypeId = ttId
                Select o).SingleOrDefault()
                
If oPayment = Nothing Then
    ' No Records Returned
End If

Open in new window

0
 
LVL 64

Accepted Solution

by:
Fernando Soto earned 1200 total points
ID: 39227916
Hi mani_sai;

Sorry here it is in C#.

var ohId = 72884643;
var ttId = 52;

// This version is used if the result set returned from the query can hev more then one record.
var oPayment = (from o in DataContextInstance.OrderPayment
                where o.OrderHeaderId == ohId && o.TransactionTypeId == ttId
                select o).ToList();

if( !oPayment.Any())
{
    // No Records Returned
}
                
// This query is used if there can be only one record returned or no records returned.   
var oPayment = (from o in DataContextInstance.OrderPayment
                where o.OrderHeaderId == ohId && o.TransactionTypeId == ttId
                select o).SingleOrDefault();
                
if( oPayment == null )
{
    // No Records Returned
}

Open in new window

0
 
LVL 8

Author Closing Comment

by:mani_sai
ID: 39236034
Thanks
0
 
LVL 64

Expert Comment

by:Fernando Soto
ID: 39236664
Not a problem mani_sal, glad I was able to help.
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

We all know that functional code is the leg that any good program stands on when it comes right down to it, however, if your program lacks a good user interface your product may not have the appeal needed to keep your customers happy. This issue can…
A quick way to get a menu to work on our website, is using the Menu control and assign it to a web.sitemap using SiteMapDataSource. Example of web.sitemap file: (CODE) Sample code to add to the page menu: (CODE) Running the application, we wi…
In this video, Percona Solution Engineer Rick Golba discuss how (and why) you implement high availability in a database environment. To discuss how Percona Consulting can help with your design and architecture needs for your database and infrastr…
Is your data getting by on basic protection measures? In today’s climate of debilitating malware and ransomware—like WannaCry—that may not be enough. You need to establish more than basics, like a recovery plan that protects both data and endpoints.…
Suggested Courses

604 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question