Culture can be any of the .NET supported cultures, not limited to those supported by SQL Server.For ExampleIn this example we see the parse function with Cast and Convert functions. If you've implemented Column Store Indexes, Sequence Objects and a BI solution or are interested in implementing one, you should seriously consider upgrading to SQL Server 2012
LINQ to SQL Entity Base - Disconnected LINQ - Home
work! Of course you also need to set your DataConext Serialization mode to Uni-directional in order for serialization to be available (Which WCF requires). HOW TO: Use it with WCF As long as both the entities and the entity base class are in the same assembly, and the assembly is referenced on both side of the WCF conversation (before you references the WCF service), it will just..
DTS used to be able to handle this perfectly well and so did the Microsoft ISAM Jet driver (importing with SQL Sever 2000, SQL Server 7, MS Access or MS Excel up to v.2007 works). i need to find difference for uniqueID in Hours between two dates(where most of the time two dates can be the same date or different), and am using DATEDIFF function
A FOREIGN KEY constraint enforces referential integrity by guaranteeing that changes cannot be made to data in the primary key table if those changes invalidate the link to data in the foreign key table. In other words you cannot insert a new record, or update a record without adding a value to this field.IDENTITY Property: Creates an identity column in a table
Shame that its not in the designer :-( Dave Brace 1 Oct 2008 5:01 PM My first project at Catalyst just wrapped up this past week, and it involved creating an order fulfillment Cheryl 9 Feb 2009 10:41 AM I have just started using LINQ and everything worked fine until I wanted to put in the combo box. In general, LINQ to SQL is a very clean way of accessing your data as true objects in your application and I especially like how it handles changes and transactions automatically for you in the background
Detailed discussion of the VSTS Database project functionality is outside of scope this article, suffice it to say that this should require only right-clicking the database project in Solution Explorer and selecting Deploy from the context menu. In other words, built-in tools allow you to use model-first or model-driven approach with LINQ to SQL only while developing initial version of the database application
A Simple MVC Application using LINQ to SQL - CodeProject
A FOREIGN KEY constraint enforces referential integrity by guaranteeing that changes cannot be made to data in the primary key table if those changes invalidate the link to data in the foreign key table. To successfully change or delete a row in a FOREIGN KEY constraint, you must first either delete the foreign key data in the foreign key table or change the foreign key data in the foreign key table, that links the foreign key to other primary key data
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The purpose of the DataContext is to translate your requests for objects into SQL queries made against the database and then assemble objects out of the results. Second we created a new instance of the Customer object that was defined within the DataContext, this object has properties which will be filled with values that comes from the user inputs
Although LINQ to SQL does not have set-based update commands, you can use either of the following techniques to update without first querying: Use ExecuteCommand to send SQL code. If you were using ASP.Net you could keep a copy of the variables in the session state or something, but at least it saves you a round trip to the database
The question is, in ASP.Net, where is the best place to dispose the DataContext ? For now, I do it in a OnDispose() override, is there a better place ? Thanks Skup Skup - Thursday, May 31, 2007 9:11:02 AM Hey Scott, Is there a button in the designer to automatically refresh all the database schema changes into the DAL? (this is a nice feature in LLBLGen) Also - do you have any links for writing my own LINQ to XXXX - where XXXX is the database du jour. Hope this helps, Scott ScottGu - Thursday, May 31, 2007 7:23:08 AM Hi Walter, LINQ ships with XLINQ - and the projection features of LINQ enable you to-do some pretty nice transformations of objects into XML with it
SPROCs can sometimes allow you to execute multiple statements together that work on data closer to the database (since they are running in SQL), which is where you can potentially see some gains depending on what you are doing. I need to investigate some more to see whether there is a way to externally trigger that (you could ceretainly add your own helper method to call it though)
Using SQL bulk copy with your LINQ-to-SQL datacontext - CodeProject
I'm currently creating my SQL Server table using Linq attribute mapping, which (as far as I can tell) doesn't allow me to determine the order of the columns in the created server table. The connection string of the datacontext that we use to create the SQLConnection here loses its password after its first use for some reason and that makes it, obviously, a bit difficult to connect
Maybe you created the DatabaseContext using the designer before adjusting the IDENTITY on the Sql Server, so just regenerate this class (by deleting the table in the designer and dropping it from the Server Explorer again)
In Emp table, columns are Empno(PK) ,EmpName and Deptno(foreign key referring to Dept)To Insert or Update record in Emp through application, value of Deptno is coming as 0(Zero). The table in the destination has a column which allow null values and has also a default constraint (getdate()), and this column is not present in the source
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