Updating dbml files
Note also that LINQ to SQL requires the Named Pipes protocol to be enabled. If you expect to take time to process all the results and are not opposed to caching the results, apply To List to the query. LINQ to SQL provides several tools for inspecting the SQL code it generates.
One such tool is my add-in, Huagati DBML/EDMX Tools. It does not support Xml Serializer or Binary Formatter. This approach eliminates the name/namespace collision. I get an error when I drag tables out of a SQL Server Compact 3.5 database. The Object Relational Designer does not support SQL Server Compact 3.5, although the LINQ to SQL runtime does. You must provide information such as the discriminator column, base class discriminator value, and derived class discriminator value. Code generation in LINQ to SQL supports Data Contract Serializer serialization. When I have multiple DBML files that share some tables in common, I get a compiler error. Set the Context Namespace and Entity Namespace properties from the Object Relational Designer to a distinct value for each DBML file. In other cases, you should manually set Is Db Generated= Q. The only workaround I have found is to delete the stored procedure, then delete the table that the stored procedure returns, add the table then add the stored procedure (all in the . You could either investigate a third-party tool like the DBML Tools by Huagati to solve this, or switch to Entity Framework 4 which has much better support for updating your existing model from the database when the underlying database has changed. Thanks in advance The DBML visual designer is very much a "one shot" thing - there's no update functionality of any kind. Surely there is a more suitable way to update DBML files in Visual Studio 2008?
In this way you dont have to delete the SP from dbml and re-add it to get the updates.
I would expect it to be set to the database default. LINQ to SQL handles this situation automatically for identity (auto-increment) and rowguidcol (database-generated GUID) and timestamp columns. LINQ to SQL avoids such injection by using Sql Parameter in queries. This approach prevents malicious commands from being used from customer input. How do I eliminate setters from some properties when I create an object model from a DBML file? Take the following steps for this advanced scenario: Q.
At this time, LINQ to SQL supports SQL Server and SQL Server Compact 3.5 only. How is LINQ to SQL protected from SQL-injection attacks? SQL injection has been a significant risk for traditional SQL queries formed by concatenating user input. You can then retrieve the latest values every time that you query. When I try to call Submit Changes in read-only mode, I get an error. Read-only mode turns off the ability of the context to track changes.
The pane on the left is the entities pane, where entity classes are displayed and configured.
The pane on the right is the methods pane that displays the As noted earlier, by default the save button is not enabled, and save functionality is not implemented.
I have a stored procedure whose return value is calculated by For more information, see Customizing Operations By Using Stored Procedures. When I try to serialize, I get the following error: "Type ' System.