Linq Dynamic Query Issue - Operator 'OR' incompatible with operand types 'Boolean' and 'String'

Multiple table dynamic, Entity Data Model, Dynamic Linq Strongly typed return types, when clause

The solution to my particular query was to do this:... var query = from pl in CurrentDataSource.ProductListing join pla in CurrentDataSource.ProductListingAttribute on new {pl.ProductID, pl.WebCategoryID, pl.ParentProductID} equals new {pla.Pro...

Generic method for constructing a string Dynamic Linq query. includes strings that have been tokenized

Here's what I use to do this:...using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Linq.Expressions; using System.Collections.ObjectModel; namespace MyLibrary.Extensions { /// <summary>Defines extension methods for building and working with Expressions.</summary> public static class Expressio...

Dynamic Linq query on a base type collection to retrieve type-specific characteristics

You are generating the following code:...persons.Where((Person p) => p.Age > 30) ...persons... is of type ...IEnumerable<IPerson>..., which can't be cast to ...IEnumerable<Person...>. What you want is to add a call to ...Queryable.Cast... to cast the ...IPerson... objects to ...Person...:...persons.Cast<Person>().Where(p => p.Age > 30) ...Use the ...

Perform a query on an object having members of type "dynamic" using Dynamic Linq.

Are ...dynamic... members incompatible with Dynamic Linq queries?, or is there another way of constructing expressions that would evaluate properly when dealing with members of type ...dynamic...?...Both can work together. Just do a conversion to Int32 before doing the comparison like so:...IEnumerable<DataItem> result = repository.AsQu...

Issue with dynamic LINQ queries containing brackets

So I think this is the answer then:... The name you use in the Where clause must be a property of the object which you have in the Queryable collection.

Operator '==' incompatible with operand types 'Guid' and 'Guid' using DynamicExpression.ParseLambda<T, bool>

Try using the ...Equals... method instead of the ...==... operator in your string:..."Id.Equals(@0)"

Parsing string values to correct type in dynamic linq queries

Have you tried checking the ...searchField... for null before passing it to ....ToString()... So do something like:...foreach (var searchField in searchFields) { products = products.Where(searchField + " != null && " + searchField + ".ToString() == @0", searchText); }

How to construct dynamic LINQ query string be for a query that looks like *abc*def*

It looks like what you need is ...IndexOf.... This returns the starting index of the substring, if it exists, otherwise -1....var.Contains("abc") && var.Contains("def") && var.IndexOf("abc") > var.IndexOf("def") ...For example, if we use the string ...XabcXdefXabc..., ...var.IndexOf("abc")... will yield ...1... and ...var.IndexOf("def")... will...

Dynamic linq Binary and/or operator (Nhibernate linq)

Based on Frédéric's suggestion, I downloaded the System.Dynamic.Linq file and changed it for '&' and '|' operatiors:... // +, -, &, | operators Expression ParseAdditive() { Expression left = ParseMultiplicative(); while (token.id == TokenId.Plus || token.id == TokenId.Minus || token.id == TokenId.Amphersand || token.id == ...

Dynamic library (System.Linq.Dynamic) SQL LIKE Operator

Since there is no LIKE operator in Dynamic Linq library, I have created it my own version. The code is not pretty, but it does work. Hopefully someone can optimize it or suggest a better way to do this....public string ParseWildcardInParameterString(string parameter, string propertyName) { string stringWithWildcard = parameter; if (paramete...