ADO.NET :: Convert The Where Clause To Linq?

Oct 22, 2010

how do you convert the WHERE clause of this statement to Linq ?

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ADO.NET :: Using Where Clause Before Select In LINQ?

Aug 26, 2010

why use where condition before select statement in LINQ

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ADO.NET :: Linq And Dynamic Where Clause With Wildcard?

Mar 25, 2011

Linq add wildcard in the where clause dynamically I have a query, i.e.

var query = from r in context.company .....

then have some business logic and based on the validation I want to add dynamically a where clause

if(a == "1")

query = query.Where(r=> r.Name = Fullname); //works!!

else if(a == "2)

query = query.Where SqlMethods.Like(r=> r.Name,"%"+Fullname+"%"); //fails to compile , the r.Name is not found..

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Linq To Entities Multiple - Clause &&

Feb 22, 2010

In the code bdehind && syntax does not work, any ideas?

Entities ctx3 = new Entities();
var uniqueQuote = from quot in ctx3.Quotes.Include("aspnet_Users").Include("Enquiries")
where quot.Enquiries.EnquiryId == selectedEnquiryId && [code]...

Error 2 Delegate 'System.Func' does not take '1' arguments C:LocalGarageFinderLocalGarageFinderEnquiryDetail.aspx.cs 56 33 LocalGarageFinder

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ADO.NET :: Use Of PATINDEX Function In Select Clause With Linq?

Sep 6, 2010

i have an problem to use of PATINDEX function in select clause with Linq.

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DataSource Controls :: Linq - Update Statement Where Clause?

May 25, 2010

I am using Linq to SQL. Tables have timestamp columns and I am using regular Linq methodology in ASP.NET MVC.I do use detached entities and always try to do updates without first querying the database for the original entity. To update an entity I use context.Attach(entity, true) followed by context.SubmitChanges() and all is fine. The sql statement that gets executed looks like:

[Code]...

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DataSource Controls :: Use Stored Procedures From LINQ With A Using Clause ?

May 25, 2010

Ive created a new LINQ To SQL class and dragged several tables across from my server, in my code I access them like this

[Code]....this is all ok, however, I have several stored procedures that I want to use as well, but when I drag the stored procedures across I get a compilatiopn error

Error 60 'DB_BL.DB_BLDataContext': type used in a using statement must be implicitly convertible to 'System.IDisposable'

how do I use stored procedures from LINQ with a using clause ?

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C# - Clause Is Used Inside Linq Statement Produces Different Results Than When Used Outside?

Aug 8, 2010

I have the following statement:

List<string> tracks = new List<string> { "ABC", "DEF" };
var items = (from i in Agenda.AgendaSessions
select i).Where(p => p.Tracks.Any(s => tracks.Contains(s.Code)));

this returns all sessions which track contains either ABC or DEF, now when I rewrite the statement like the following, it returns All sessions regardless, as if the clause always yeilds into true,

var items = from i in Agenda.AgendaSessions
where i.Tracks.Any(s=> tracks.Contains(s.Code))
select i;

Update

if there are other clauses within the where, does that affect the results?

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DataSource Controls :: LINQ To Entities Sub - Query - Doesn't Support The "IN" Clause

Apr 7, 2010

I'm having trouble writing what should be a simple sub-query using LINQ to Entities. I have two tables: Customers and Orders that have a relation on the CustID field. Not all Customers have a record in the Orders table, while some have mutiple records. In traditional SQL, you could write the query like this: SELECT * FROM Orders where CustID IN (SELECT CustID FROM Customers) I know this could be done as a JOIN in both SQL and L2E, but my actual query is more complex (about 8-9 joins), so I am hoping to find a L2E sub-query equivalent. Something like this:

[Code]....

I know LINQ to Entities does not support the " IN " clause, so I am looking for something that will work in its place.

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C# - How To Convert Linq To SQL To Linq Entity

Sep 4, 2010

I have the code below could to rewrite from LINq to SQL to Linq to Entity.

[code].....

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C# - Linq To SQL Where In Clause Causes Object Not Set To Instance Of Object

Jul 1, 2010

I have two tables, subscriptions and topics. Each subscription is related to a specific TopicID (PK for topics table). The first query works fine and retrieves the topicID's of all videos that were uploaded today. The problem occurs when I try and then use the results of query1 as a where-in clause for query 2. I keep receiving object reference not set to instance of an object.

Query 1 IQueryable<int> topics = (from t in dataLayer.Videos
where SqlMethods.DateDiffDay(t.DateCreated, DateTime.Today) == 0
select t.TopicID).Distinct(); [code]....

I have looked at some samples around the net and they all seem to be identical to mine.

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ADO.NET :: Convert LINQ To Int?

Jun 30, 2010

var query = from p in dc.Patients
select p.PAge;

Can i get PAge value in an any int like....

int PAge = query.Single();
I'm trying Convert.ToInt32(-----------------)

but this give me Error on run time

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ADO.NET :: Convert Sql Query In Linq?

Oct 2, 2010

how convert this sql query in linq,

SELECT COUNT(AdvisorID) AS AdvisorRegisterLast2Days FROM ob_Advisor WHERE CONVERT(varchar,CreationDate,101) BETWEEN CONVERT(varchar,DATEADD(day,-4,DATEADD(day,2,GETDATE())),101) AND CONVERT(varchar,GETDATE(),101)

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DataSource Controls :: How To Convert To Linq (vb.net)

Sep 16, 2010

I have an sql statement I want to convert to LINQ (VB.Net).

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ADO.NET :: Convert From Linq.IQueryable To DataTable?

Aug 23, 2010

Is there option to convert from Linq.IQueryable to DataTable with some sort of CopyToDataTable() function. I am trying this.

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ADO.NET :: How To Convert Bool Value Into String In LINQ

Dec 29, 2010

I have the following query in which I have to convert the 'bool' valu into 'string' value as "Y" or "N". I have a class defined called ChartDosCodeInfoStruct which definesQAIndicator as String. The value I am feteching from DB is a bool value. I need to take this bool value and accordingly assignQAIndicator= "Y" or "N".

UserManager userManager = (UserManager)BaseEntityManager<DataAccessLayer.User>.GetSingleInstance();
List<User> user = userManager.GetCodersForChart(_currentChart.ChartId);
UIConfigurationObject.CoderForChart.value = user.First().FullName.ToString();
[code]...

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ADO.NET :: How To Convert A Linq Query To A Datatable

Feb 23, 2011

how to convert a linq query to a datatable

this is my query

[Code]....

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ADO.NET :: Convert Procedure With Datareader To LINQ?

Aug 3, 2010

i have this procedure:

[Code]....

the difficulties are the follows:

1)i cannot know how to execute stored procedure with LINQ

2)how can i set value to my properties after a selection?

3)how can i set optional parameters in a stored procedure by LINQ?

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Convert Linq Code To Dotnet 2.0?

Mar 17, 2011

string pdfpath = Server.MapPath("images");
string imagepath = Server.MapPath("Images");
using (Stream inputPdfStream = new FileStream(pdfpath + "\NLI_Filled_out.pdf", FileMode.Open, FileAccess.Read, FileShare.Read))
using (Stream inputImageStream = new FileStream(imagepath + "\sign2.gif", FileMode.Open, FileAccess.Read, FileShare.Read))
using (Stream outputPdfStream = new FileStream(pdfpath + "\NLI_Filled_output.pdf", FileMode.Create, FileAccess.Write, FileShare.None))
{
var reader = new PdfReader(inputPdfStream);
var stamper = new PdfStamper(reader, outputPdfStream);
var pdfContentByte = stamper.GetOverContent(3);
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(inputImageStream);
image.ScalePercent(24f);
image.SetAbsolutePosition(100, 130);
pdfContentByte.AddImage(image);
stamper.Close();
}

I have the above code in 3.5 using linq..i want to convert it into dotnet 2.0..

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DataSource Controls :: Convert SQL To Linq?

Jun 24, 2010

SELECT *
FROM dc.accounts t1
INNER JOIN dc.profiles t2 ON t1.AccountID = t2.AccountID
WHERE EXISTS
(
SELECT *
FROM dc.profileblocks t3
WHERE t3.AccountID = '14' and t1.AccountID = t3.AccountID
)

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DataSource Controls :: How To Convert Sql Query To LINQ

Feb 13, 2010

How can I convert this sql query to LINQ ?

[code]...

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ADO.NET :: Cannot Convert String To Bool Error In LINQ

Oct 22, 2010

cannot convert string to bool error in LINQthis is my code:

[Code]....

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DataSource Controls :: Convert Code Of SQL To Linq?

May 14, 2010

I would like to ask the programmers to help me in C# with LINQ to SQL.

I have this code conn.Open();

SqlDataReader dr = DB.ExecSpReader("select AttachmentName from AttachmentTable where TicketId=" + ticketID, param);

while (dr.Read())

{[code]....

and I need to convert it to LINQ SQL.

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DataSource Controls :: Convert ObjectQuery To LINQ?

Mar 1, 2010

I like to think I know my way around eSQL, but I'm pretty ignorant when it comes to LINQ. Can anyone tell me how I would write the following ObjectQuery in LINQ?

[Code]....

There is a many-to-many association between Countries and Sponsorships (a Country may have many Sponsorships, and a Sponsorship may have many Countries). I want to find all Countries related to a specific Sponsorship based on the Sponsorship primary key.

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Convert Linq ISingleResult Output To Datatable?

Apr 4, 2011

I call a stored procedure using linq. I want to convert the ISingleResult output to datatable. what can I do?

DataClassesDataContext Dac = new DataClassesDataContext();
var ExitResult = Dac.Retrieverelations(WorkshopCode);

now I'm using below code for converting but I need a better solution.

D
dataTable dt = new DataTable();
dt.Columns.Add("Id", typeof(Int64));[code]....

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