c# Programming Glossary: expression.constant
Replace parameter in lambda expression http://stackoverflow.com/questions/11159697/replace-parameter-in-lambda-expression scenario tested var zeroIndexIndexer Expression.MakeIndex Expression.Constant foos typeof List Foo .GetProperty Item new Expression.Constant.. foos typeof List Foo .GetProperty Item new Expression.Constant 0 .ToString of the below looks like the following value System.Collections.Generic.List`1..
How do I create an expression tree to represent 'String.Contains(“term”)' in C#? http://stackoverflow.com/questions/278684/how-do-i-create-an-expression-tree-to-represent-string-containsterm-in-c string .GetMethod Contains new typeof string var someValue Expression.Constant propertyValue typeof string var containsMethodExp Expression.Call..
How do I create an expression tree calling IEnumerable<TSource>.Any(…)? http://stackoverflow.com/questions/326321/how-do-i-create-an-expression-tree-calling-ienumerabletsource-any return Expression.Call anyMethod collection Expression.Constant predicate Here's a Main routine which uses all the above code.. p typeof string .GetMethod StartsWith new typeof string Expression.Constant b p .Compile Expression anyCall CallAny Expression.Constant.. b p .Compile Expression anyCall CallAny Expression.Constant strings predicate now test it. Func bool a Func bool Expression.Lambda..
How do I compile an Expression Tree into a callable method, C#? http://stackoverflow.com/questions/346523/how-do-i-compile-an-expression-tree-into-a-callable-method-c TDestination TSource value return Expression.Convert Expression.Constant value typeof TSource typeof TDestination option 1 a single expression..
C# Dynamic Event Subscription http://stackoverflow.com/questions/45779/c-sharp-dynamic-event-subscription p.ParameterType x var body Expression.Call Expression.Constant d d.GetType .GetMethod Invoke var lambda Expression.Lambda body.. parameters 1 typeof T var body Expression.Call Expression.Constant d d.GetType .GetMethod Invoke arg var lambda Expression.Lambda..
Viewing the IL code generated from a compiled expression http://stackoverflow.com/questions/4764242/viewing-the-il-code-generated-from-a-compiled-expression var param Expression.Parameter typeof Program var con Expression.Constant 5 var prop Expression.Property param typeof Program .GetProperty..
LINQ Expression to return Property value? http://stackoverflow.com/questions/567963/linq-expression-to-return-property-value T row var member Expression.Invoke selector row var keys Expression.Constant block typeof TValue var predicate Expression.Call method keys..
Compare nullable types in Linq to Sql http://stackoverflow.com/questions/586097/compare-nullable-types-in-linq-to-sql selector param var body Expression.Equal member Expression.Constant value typeof TValue var lambda Expression.Lambda Func T bool..
How to create LINQ Expression Tree with anonymous type in it http://stackoverflow.com/questions/606104/how-to-create-linq-expression-tree-with-anonymous-type-in-it Queryable Select new Type source.ElementType dynamicType Expression.Constant source selector public static class LinqRuntimeTypeBuilder private..
Use reflection to get lambda expression from property Name http://stackoverflow.com/questions/7246715/use-reflection-to-get-lambda-expression-from-property-name parameter propertyName Expression target Expression.Constant inputText Expression equalsMethod Expression.Call property Equals..
C# LINQ to SQL: Refactoring this Generic GetByID method http://stackoverflow.com/questions/735140/c-sharp-linq-to-sql-refactoring-this-generic-getbyid-method itemParameter typeof T .GetPrimaryKey .Name Expression.Constant id new itemParameter return dbcontext.GetTable T .Where whereExpression.. Expression.Equal Expression.Property itemParameter id Expression.Constant id new itemParameter var table DB.GetTable T return table.Where.. Expression.Property itemParameter GetPrimaryKeyName T Expression.Constant id new itemParameter var table DB.GetTable T return table.Where..
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