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Please review the stack trace for more information about the error and where it originated in the code. Invalid Operation Exception: Execute Reader: Command Text property has not been initialized Source Error: [Invalid Operation Exception: Execute Reader: Command Text property has not been initialized] System.
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Updating linq to sql entities

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That's fine if you use LINQ directly in your UI code but it's not all that great if you use LINQ in the middle tier.Incidentally Rob Connery also mentioned this in his LINQ Sonic Cast last week.Are there any differences because I am using SQL server 2012 and not SQL Express?Thanks You mention that: Then, construct the Entity Set by passing in these two delegate methods. Order ID == 11000 select ord; // Execute the query, and change the column values // you want to change. Ship Via = 2 ' Insert any additional changes to column values.

I suppose I see why this might not exist due to complications with child entity objects.

For more information, see Customizing Insert, Update, and Delete Operations. foreach (Order ord in query) // Submit the changes to the database. Order ID = 11000 _ Select ord ' Execute the query, and change the column values ' you want to change.

Developers using Visual Studio can use the Object Relational Designer to develop stored procedures for the same purpose. try catch (Exception e) ' Query the database for the row to be updated.

Here’s the skinny: Don’t get into a situation where you have to update an object from a disconnected Data Context. Sure, you can do some Googling and find some resources on the subject, and even find some slightly tolerable solutions..

but even those require some nasty stuff, some hard coding of methods in the Data Context class itself, and/or adding versioning field to your database table.