Why, in PLINQO, is the fo开发者_JAVA百科llowing valid; parent.ManyToManyChildList.Add(child) context.SubmitChanges();
In Linq to Sql, Is there any way to define attributes on an entity that indicate that it should be unique (a开发者_如何学运维nd will also generate a unique constraint in the database when generating t
I\'m working on an mvc3 web app. When the user updates something, I want to compare the old data to the new one the user is inputing and for each field that is different add those to a log to create a
HI i have a textbox and a gridview. May i know what is the best way to have something type in the textbox and it auto filter the gridview based on a keyword e.g. Name
I have a simple database with two tables: 开发者_运维知识库Photo and Tag.There is a one-to-many (a photo can have many tags) relationship between the two tables.Here is a diagram:
I came across this while pl开发者_高级运维aying with LINQ to SQL and can\'t seem to see it in a light that makes any sense.I have an IQueryable as:
I am going to develop a web site will have 80,000 to 100,000 views per day. there will be less insertion operation and more retrieval operation. so Performance of website is a big issue for me. I want
I have a table and am using ASP.NET MVC to create an object and save it. It\'s been working fine for a while. Somehow, recently, I started getting this error message on the production machine:
I have an html table that is displaying customer orders. One of these columns is a sub total which needs to add all rows for sub total in the order details table for that specific order. Is there a wa
I\'m executing a pretty simple query using Linq to SQL. I\'m creating the expression and then passing it to the Where() extension method. The Linq internals are throwing a StackOverflowException when
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