Dynamically generate LINQ queries

by

Here is a solution with expression trees:

var param = Expression.Parameter(typeof(SomeObject), "p");
var exp = Expression.Lambda<Func<SomeObject, bool>>(
    Expression.Equal(
        Expression.Property(param, "Name"),
        Expression.Constant("Bob")
    ),
    param
);
var query = someObj.Where(exp);

I know it’s much more complex, but this may be useful in times.

More Related Contents:

  1. Parse Xml response from a get method in C# using Linq
  2. LINQ to read XML
  3. XElement namespaces (How to?)
  4. XDocument containing namespaces
  5. The ‘:’ character, hexadecimal value 0x3A, cannot be included in a name
  6. Query an XDocument for elements by name at any depth
  7. Edit specific Element in XDocument
  8. Serialize an object to XElement and Deserialize it in memory
  9. Query Xml File for Records using Linq
  10. Update XML with C# using Linq
  11. Linq to XML – update/alter the nodes of an XML Document
  12. How/Can I use linq to xml to query huge xml files with reasonable memory consumption?
  13. Case insensitive XML parser in c#
  14. What guarantees are there on the run-time complexity (Big-O) of LINQ methods?
  15. Searching a tree using LINQ
  16. How can I get LINQ to return the object which has the max value for a given property? [duplicate]
  17. Operation could destabilize the runtime?
  18. XML Deserialization of collection property with code defaults
  19. C# Linq intersect/except with one part of object
  20. Entity-framework code is slow when using Include() many times
  21. Linq to Objects – return pairs of numbers from list of numbers
  22. From Eric Lippert’s blog: “don’t close over the loop variable” [duplicate]
  23. How to prevent System.Xml.XmlException: Invalid character in the given encoding
  24. Export Model to DataTable
  25. loading a full hierarchy from a self referencing table with EntityFramework.Core
  26. Add the where clause dynamically in Entity Framework
  27. System.IO.Exception error: “The requested operation cannot be performed on a file with a user-mapped section open.”
  28. Split a List into groups of consecutive numbers [closed]
  29. Sorting a List
  30. Is Injection Possible through Dynamic LINQ?

Leave a Comment