LINQ to SQL Insert?
LINQ has an extension method called Contains which allows for this functionality. This can be seen in the following example: NorthwindDataContext dc = new NorthwindDataContext(); dc. Log = Console.
Out; var query = from c in dc. Customers where!(from o in dc. Orders select o.
CustomerID) . Contains(c. CustomerID) select c; foreach (var c in query) Console.
WriteLine( c ) Note the negation on the where clause! This example was from the website here.
LINQ has an extension method called Contains which allows for this functionality. This can be seen in the following example: NorthwindDataContext dc = new NorthwindDataContext(); dc. Log = Console.
Out; var query = from c in dc. Customers where!(from o in dc. Orders select o.
CustomerID) . Contains(c. CustomerID) select c; foreach (var c in query) Console.
WriteLine( c ); Note the negation on the where clause! This example was from the website here.
Nothing build in as far as I know, we would have to go about finding the row manually using where and than do the Insert. There is a possibility of race coditions in such queries. Have a look at this thread for detailed solution : social.msdn.microsoft.com/Forums/en-US/l....
You perform Insert, Update, and Delete operations in LINQ to SQL by adding, changing, and removing objects in your object model. By default, LINQ to SQL translates your actions to SQL and submits the changes to the database. LINQ to SQLÂ offers maximum flexibility in manipulating and persisting changes that you made to your objects.
As soon as entity objects are available (either by retrieving them through a query or by constructing them anew), you can change them as typical objects in your application. That is, you can change their values, you can add them to your collections, and you can remove them from your collections. LINQ to SQL tracks your changes and is ready to transmit them back to the database when you call SubmitChanges.
The following excerpts use the Customer and Order classes from the Northwind sample database. Class definitions are not shown for brevity. When you call SubmitChanges, LINQ to SQL automatically generates and executes the SQL commands that it must have to transmit your changes back to the database.
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