Confused about using LINQ to query a SQL Server DB: edmx? dbml? DataSet?

Confused about using LINQ to query a SQL Server DB: edmx? dbml? DataSet?

By : ravi kishore
Date : November 22 2020, 11:12 AM
To fix the issue you can do In a recent post on extending NerdDinner, Scott Hanselman talked about this very thing. To quote at the end:
code :

Share : facebook icon twitter icon
A Linq to Sql - Multiple .DBML files or one .DBML File

A Linq to Sql - Multiple .DBML files or one .DBML File

By : yamzeq
Date : March 29 2020, 07:55 AM
hope this fix your issue I would have to advise you to use ONE dbml file for all your tables.
If you are trying to join two tables from different data contexts, it makes your code more convoluted. It can be done by simulating cross context joins, but why put yourself in that situation. Keep it simple stupid.
Stop LINQ to SQL dbml from updating connection string when I drag tables into the dbml file

Stop LINQ to SQL dbml from updating connection string when I drag tables into the dbml file

By : Aaron
Date : March 29 2020, 07:55 AM
seems to work fine I figured out another away after tinkering with answers to some somewhat related issues.
To solve the problem I was having I needed to delete the Data Connection I created to connect to my database from your server explorer window in VS2010. You then need to open the .dbml designer and right-click in the white space and select properties. A properties window will open and there will be a "Connection" section, click on the small arrow to open it up. If you click on the connection string row a button will appear with dots(...) on it. When you click on this button it will open a Connection Properties window. This window will already have all of the same connection properties your .dbml already has. All you have to do is click 'OK' and it will automatically create a data connection for you in the server explorer that wont cause you to add a new connection string to the .dbml when you drag a new object to it!
linq to sql query with 2 dbml files

linq to sql query with 2 dbml files

By : Yu Chen
Date : March 29 2020, 07:55 AM
it fixes the issue Well, you can always limit your N+1 query problem to 3 queries - one to get users, one to get user's data form first database and one for the second database. Then connect all the results in memory - this will limit the connections to databases which should improve performance of your application.
I don't know if linq-to-sql or entity framework offers building model from different databases - this would pose some performance problems probably - like in includes or something, but I may simply not be aware of such features.
code :
var facebookIds = fbFriendsFollowStatus.Select(a => a.fbid);
var FFUserIds= FFdb.FFUsers.Where(x => facebookIds.Contains(x.FacebookID)).Select(x => new { x.FacebookID, x.FFUserId)
var statuses = EEdb.StatusTable.Where(x => FFUserIds.Contains(x.ffID)).Select(x => new { x.ffID, x.Status})
Drag and Drop From Server Explorer to DataSet and DBML Designer NOT Working

Drag and Drop From Server Explorer to DataSet and DBML Designer NOT Working

By : Adriennearthur
Date : March 29 2020, 07:55 AM
Does that help Okay, I finally solved this problem.
The problem seems to be with the Visual Database Tools DLL.
What is difference between .edmx and .dbml file in linq?

What is difference between .edmx and .dbml file in linq?

By : Chris
Date : March 29 2020, 07:55 AM
I hope this helps . edmx is the modeling file for Entity Framework.
dbml is the modeling file for Linq 2 Sql.
Related Posts Related Posts :
  • Replace a # character with a space and a # character
  • DataGrid SelectedItem and CurrentItem on row change and on loosing focus
  • Parse Json to class with C#
  • Publish .exe with Visual Studio Mac
  • c# out causing a no overload for method error?
  • Which Thread resume the method execution after await in Asp.net Web application
  • How to open Asp.Net project in another computer
  • Azure app registrations - SQL Server permission for C# App
  • How to Submit String with 536000 Characters to API
  • Server side TcpClient's stream.read gets no data when a different client (connected to the same port) sends data
  • Add combo-box in windows form grid view by using LINQ query
  • Remove XLL addin when multiple XLL addins are installed
  • Deserialize dynamic json into generic .NET object
  • How to search node in Jobject
  • Iron Webscraper connects to host but doesn't scrape?
  • Change values from textbox at the touch of a button
  • Data access structure with Entity Framework
  • Link Assemblys failed unexpectedly (Xamarin.ios.dll)
  • ASP.NET Core Razor pages - not binding on POST Request
  • How to update appsettings.json from wix custom actions with the values passed as parameter during command line installat
  • Load undefined images from folders
  • How to add a new button in title bar next the minimize button in UWP?
  • Missing DLL in docker image after copying published tree inside
  • One of the identified items was in an invalid format
  • TLS1.2 does not exist with .NET v4.7
  • How do I parse a XML document into object models?
  • Why is a conditional style being set on a html element by Razor is always html encoded incorrectly
  • Counting the amount of repetitions a letter has in a string
  • How to get the encoding of a file in a repository git via C#?
  • Communication between an Azure web application and a windows form app on Azure VM
  • WCF Service - Client receiving CommunicationException after many requests to localhost
  • How to correctly view pdf in browser using DotVVM?
  • Reading part of json into c# object
  • YoutubeAPI v3 - Setting thumbnail returns Completed status, but no thumbnail is set on video
  • Using the SimpleInjector, is it possible to get a singleton by its implementation type?
  • Why the LogLevel rule is not set for my NLog?
  • Converting short? to TimeSpan
  • Publish build artifact through build.cake instead of Azure Devops
  • Unable to get new token using JWT method (C#)
  • Running HttpRequest synchronously C#
  • How to avoid format in "XDocument.Parse(strHtml)"
  • How to update naviation property with new values in EF Core?
  • Queued function not executing with dequeue
  • How to Control Sequence of columns automatically Generated in DataGrid
  • Getting error when try to add a file from library to main project?
  • Aggregate Roots DDD/UoW/Repo/Service
  • How to change the horizontal movement direction of the player in Unity2D?
  • Getting a two dimensional array of all possible unique combination of numbers lower than a mixmum for each cell starting
  • How to get LDAP nested groups from attribute
  • Get array consisting of first values of a list of tuples
  • How do I pass information from my View to my Controller as a Parameter
  • UWP BarcodeScanner Preview: CaptureElement doesn't show any Preview
  • How to register open generic with custom factory method?
  • Change image via in scriptable object in Unity
  • Decreasing value of one float when other go up
  • Xceed CheckComboBox not properly showing selected values from items hardcoded in XAML
  • Why does char array display contents on console while string and int arrays dont in c#?
  • How to prevent custom filters twice calls?
  • c#: remove brackets of certain size if existing including its content
  • Is there a simple way of handling nested Dictionary<string, object> types where object is either string or another
  • shadow
    Privacy Policy - Terms - Contact Us © festivalmusicasacra.org