Dynamically query an object set in EF using LambdaExpression

I am trying to dynamically query Entity Framework, so I'm using the Expression class to put together a LambdaExpression that will be queried against an object set. If I have a reference to LambdaExpressi开发者_JAVA技巧on, where I don't have an explicit function defined, is it possible to query against an objectset this way, or is it required to have a generic expression defined (using Expression.Lambda<..>)?

Thanks.

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This is what I was looking to do:

http://msdn.microsoft.com/en-us/library/bb882637.aspx

Using this, I was able to build a lambda expression against an object set dynamically. Worked very well.

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Check out Dynamic Linq. Basically you can use strings in place of LINQ expressions until you want to use them. Sounds like it might be what you want.