ADO.NET :: Combine 2 Linq Queries?
Jul 27, 2010Is it possible to combine these 2 linq queries ?
[Code]....
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DataSource Controls :: Combine The LINQ Queries Together And Have Access To Both Of The Results Independently?
Feb 25, 2010Is there a way to combine the LINQ queries together and have access to both of the results independently?
[Code]....
SQL Server :: Combine Two Queries In One Resultset?
Sep 6, 2010I want to combine two queries like :
select name as name1 from table1 where id = 6
and
select name as name2 from table1 where id = 2.
I need a single resultset. How can I do that?
SQL Server :: Combine Two Self Referencing Queries In A Function?
Feb 23, 2011I have a menu table which has a (mostly) unlimited number of levels/tiers:
[Code]....
I also have a working function which will give the up and down tiers based on a given MainMenuId:
[Code]....
My question is, is there a better way to do this such as combining the two querries? Every attempt I have made results in a "The Statement terminated. The maximum recursion 100 has been exhausted before statement completion"
ADO.NET :: Can't Combine "LINQ Join" With Other Tables?
Jan 8, 2011The main problem is that I recieve the following message:
"base {System.SystemException} = {"Unable to create a constant value of type 'BokButik1.Models.Book-Author'. Only primitive types ('such as Int32, String, and Guid') are supported in this context."}"
based on this LinQ code:
[Code]....
How shall I solve this problem to get a class instance that contain with property title and Book-AuthorID?I also have tried making some dummy by using "allbooks" relation with Code Samples from the address
http://www.hookedonlinq.com/JoinOperator.ashx. Unfortunately, still same problem.
I also have taken account to Int32 due to entity framework http://msdn.microsoft.com/en-us/library/bb896317.aspx. Unfortunatley, still same problem.
Using database with 3 tables and one of them is a many to many relationship. This database is used in relation with entity framework
Book-Author
Book-Author (int)
BookID (int)[code]....
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Jul 31, 2010How to convert SQL Queries to Linq.is their any tool available to convert SQL Queries to Linq
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Mar 18, 2010I use LINQ-SQL as my DAL, I then have a project called DB which acts as my BLL. Various applications then access the BLL to read / write data from the SQL Database.
I have these methods in my BLL for one particular table:
public IEnumerable<SystemSalesTaxList> Get_SystemSalesTaxList()
{
return from s in db.SystemSalesTaxLists
select s;
}
public SystemSalesTaxList Get_SystemSalesTaxList(string strSalesTaxID)
{
return Get_SystemSalesTaxList().Where(s => s.SalesTaxID == strSalesTaxID).FirstOrDefault();
[Code].....
ADO.NET :: How To Build Dynamic Linq To SQL Queries
Nov 7, 2010I'm trying to do something that on the face of it is very simple.
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I've tried to do a bit of research into dynamic linq queries, but have come up empty handed, or what I've found doesn't seem to quite answer my question.
ADO.NET :: Time Difference In Linq Queries?
Aug 20, 2010I have my Linq query in which i need to find time difference(not days difference).
The field in database is datetime.
Dim ldtToday
As DateTime = TimeOfDay
Dim SR_RM_InnerJoin =
From SR
In lcntxRT60Entities.RtSReports _
Join RM
In lcntxRT60Entities.RtRMaster
On SR.RtRMaster.ReportID
Equals RM.ReportID _
Select SR, RM _
Where SR.TID = 1 _
And --(Check) SR.ReportDeliveryTime.Value.AddDays(1) < ldtToday
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One column needs to conditionally be assigned an application number from a range of values.
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Dec 29, 2010I've got the following LINQ query to my IQueryable service
Dim eventcount = EventService.QueryEvents().Count
Dim eventlist = EventService.QueryEvents().Skip((page - 1) * 5).Take(5).ToList
But I'm wondering if there's a way to do this without making two calls to the database?
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C# - Returning A Max/limit When Using .Include () In LINQ-to-Entities Queries?
Mar 6, 2011Is there a way to cap the number of records returned when an .Include() method is called on an ObjectQuery<>? Basically, if one of my entities is in a one-to-many relationship, such as a Band entity to a list of Fan entities (where a band can have any number of fans), how can I limit the number of fans returned?
In the example: var band = ctx.Bands.Include("Fans").SingleOrDefault(b => b.BandId == someBandId);
If I use the Include, it will return all fans. How can I query that Fans navigation property to return only a subset or max?
ADO.NET :: Preventing Duplicate Records Being Returned From Linq To Sql Queries?
Aug 8, 2010I've got a linq to sql query that pulls data from 2 different tables and contains an or statement:
[Code]....
The problem I've got is that some queries match both sides of the or statement so it returns the same record twice.
How can I eliminate these duplicates quickly and easily?
DataSource Controls :: LINQ To SQL - Multiple Queries Doesn't Return Any Results
May 25, 2010I am working on asp.net 3.5 and in MVC using Linq to SQL classes. In my MVC project i am calling stored procedure using linq to sql that conatin query joining two tables.Below is my code in Partial class
[
Function(Name="dbo.GetUserWiseThreadDetail_SP")]
[ResultType(typeof(Thread))]
[ResultType(typeof(Reply))]
public
IMultipleResults GetUserWiseThreadDetail_SP([Parameter(DbType="VarChar(30)")]
string userID)
{
ExecuteResult result = this.ExecuteMethodCall(this,
(MethodInfo)(MethodInfo.GetCurrentMethod())), userID);
return ((IMultipleResults)(result.ReturnValue));
}
In one of the controller i have made one more class
public class
MypostIndexData
{
public
IEnumerable<Thread> Thrds {
get;
set; }
public
IEnumerable<Reply> Repls {
get;
set; }
public MypostIndexData(IEnumerable<Thread>
thrds,IEnumerable<Reply> repls)
{
this.Thrds=thrds;this.Repls=repls;
}
}
finally coding of controller action method
ForumDataContext pmforum = new
PMForumDataContext();
public
ActionResult MyPosts(string userId)
{
IEnumerable<Thread>thrds;
IEnumerable<Reply>repls;
IMultipleResults result = pmforum.GetUserWiseThreadDetail_SP(userId); (this satement doesnot give any result,if i execute stored proc in
sql it give the results)
thrds = result.GetResult<Thread>();
List<Thread> thrdlist =
new
List<Thread>(thrds);
repls = result.GetResult<Reply>();
List<Reply> replylist;
if (repls !=
null)
{
replylist = new
List<Reply>(repls);
}
return View(new
MypostIndexData(thrds,repls));
I am unable to understand why i am not getting any results?
Architecture :: DAL As Web Service - Adding A Service Reference To Project And Then Using The EF4 Context And Writing LINQ Queries Against The DB?
Feb 10, 2011I'm currently trying to work out the best way to build this web application, which will then be intergrated on other systems, such as WinForms, Intranets etc.
We hope to include the usual layers i.e. DAL, BLL, BOL and UI but I have been experimenting with Entity Framework 4 and WCF Data Services and managed to get something in place where I was using WCF as a gateway to EF4.
i.e. Adding a Service Reference to my project and then using the EF4 context and writing LINQ queries against the DB
e.g.[Code]....
Now with the current setup I would still need to write a DAL Class Library, that interacts with the Data Service, because as I said WCF Data Services only seems to be a gateway, I can't see where to put the code (above) in the Data Service and then how I could these methods.
My questions are: 1. How do I develop a WCF Data Service in such a way to allow this behaviour - I know how I could do it using ASMX web service, something like [Code]....
2. If I am to use WCF Data Services, how is serialization handled (if at all) - again I know how to do something in ASMX web services
3. Again, If I am to use WCF, how do I add Security and only allow my applications to access the web service - for obvious reasons
4. Would it be possible / logical to also include the Business Logic Layer into the web service?
SQL Reporting :: Can Combine LIKE And IN
Nov 4, 2010I have a report with several filter parameters. Everything works fine presently. For one parameter, I use the LIKE as follows in my WHERE statement:
WHERE drug LIKE '%' + @drugused + '%'
@drugused is the selection value of a dropdown list. But now I want to change my parameter to allow multi-selection. But I am not sure how to write my WHERE statement for this. Normally I would use IN but I'm not sure how to do this with the LIKE.
C# - Can Combine Two Objects Into One
Oct 3, 2010I'm preparing to pass values to a method:
private string BuildMessage(int templateID, string body, object data)
where the data param is an array of name/value pairs. To prepare my values for that data param I need to combine the properties of a strongly typed class with the values of a simple 2d array.
What's the best way to merge those values?
Utility To Combine Querystrings?
Apr 28, 2010Is there a utility to combine querystrings? I'm looking for something like:
Input: Combine("test=a&test2=b", "test3=c") Result: "test=a&test2=b&test3=c"
Input: Combine("test=a&test2=b", "") Result: "test=a&test2=b"
Input: Combine("", "test3=c") Result: "test3=c"
And maybe some weird ones:
Input: Combine("&test=a&test2=b", "?test3=c") Result: "test=a&test2=b&test3=c"
Combine Silverlight) With SAP Webdynpro?
Mar 1, 2010Does anybody knows possibilities or approaches to combine ASP.NET with SAP Webdynpro (or to embed/integrate Webdynpro in a ASP.NET (or Silverlight) application) ?
View 2 RepliesC# - Combine MP3 Files In Response?
Jan 19, 2010I lied! The commandline fails if the two source files have different bitrates (does samplerate matter?). Also, the source code below succeeds when the two sources are the same bitrate. So, this looks like a bitrate challenge now.
Original question:
result.mp3 (from the commandline, below) is playable in WMP11. The ASP.NET code below serves a file which plays fine in WMP11. But, when I uncomment those two lines, WMP11 won't play the file. Something about the code that merges the two MP3 files isn't to the satisfaction of WMP11. How can I change the ASP.NET code to merge the two MP3s in the HTTP response with the success that the 'copy' commandline gives me?
protected void Page_Load(object sender, EventArgs e) {
Response.Clear();
Response.ContentType = "audio/mpeg";
Response.AddHeader("Content-Disposition", "attachment; filename=test.mp3");
var bytes1 = System.IO.File.ReadAllBytes(@"C: est1.mp3");
WriteBytesToResponse(bytes1);
//var bytes2 = System.IO.File.ReadAllBytes(@"C: est2.mp3");
//WriteBytesToResponse(bytes2);
Response.End();
}
private void WriteBytesToResponse(byte[] sourceBytes) {
using (var sourceStream = new MemoryStream(sourceBytes, false)) {
sourceStream.WriteTo(Response.OutputStream);
}
}
copy /B test1.mp3+test2.mp3 result.mp3
Can Combine WebResource.axd CSS Requests
Sep 15, 2010I have developed some ASP.NET server controls which include their own javascript and css files. A lot of these controls use jQuery extensions which, as you know, often include their own css files.
I'm using Telerik's RadScript manager which combines the javascript like a boss. However, I'm using the AjaxToolkit's ClientCssResource attribute to include the css files in my server controls, and I have noticed that the CSS files are not getting combined at all. My pages have 10-15 WebResource.axd requests for css files for my server controls.
Everything I find only is about combining javascript, and nothing tells me how I can combine the CSS files. Does anyone know if there is a way to combine the CSS dynamically (I don't want to manually combine as each page might use a different subset of the server controls)?