asqueryable

I am developing a small framework to access the database. I want to add a feature that makes a query using a lambda expression. How do I do this? public class TestModel { public int Id {get;set;} public string Name {get;set;} } public class Repository<T> { // do something. } For example: var repo = new Repository<TestModel>(); var query = repo.AsQueryable().Where(x => x.Name == "test"); // This query must be like this: // SELECT * FROM testmodel WHERE name = 'test' var list = query.ToDataSet(); // When I call ToDataSet(), it will get the dataset after running the made query. Go on and create a

Example code: List<Student> Students = new List<Student>() { new Student(101, "Hugo", "Garcia", new List<int>() { 91, 88, 76, 93 }), new Student(102, "Rick", "Adams", new List<int>() { 70, 73, 66, 90 }), new Student(103, "Michael", "Tucker", new List<int>() { 73, 80, 75, 88 }), new Student(104, "Fadi", "Fakhouri", new List<int>() { 82, 75, 66, 84 }), new Student(105, "Peter", "Barrows", new List<int>() { 67, 78, 70, 82 }) }; var query = from student in Students where student.Marks.AsQueryable().All(m => m > 70) select student; foreach (Student student in query) { Console.WriteLine("{0} {1}<br

I'm trying to perform a simple LINQ query on the Columns property of a DataTable: from c in myDataTable.Columns.AsQueryable() select c.ColumnName However, what I get is this: Could not find an implementation of the query pattern for source type 'System.Linq.IQueryable'. 'Select' not found. Consider explicitly specifying the type of the range variable 'c'. How can I get the DataColumnCollection to play nice with LINQ? How about: var x = from c in dt.Columns.Cast<DataColumn>() select c.ColumnName; You could also use: var x = from DataColumn c in myDataTable.Columns select c.ColumnName It will