diff options
Diffstat (limited to 'Codemerx/Gestor.Application/Helpers/QueryableHelper.cs')
| -rw-r--r-- | Codemerx/Gestor.Application/Helpers/QueryableHelper.cs | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Codemerx/Gestor.Application/Helpers/QueryableHelper.cs b/Codemerx/Gestor.Application/Helpers/QueryableHelper.cs new file mode 100644 index 0000000..5670bf2 --- /dev/null +++ b/Codemerx/Gestor.Application/Helpers/QueryableHelper.cs @@ -0,0 +1,26 @@ +using System;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Runtime.CompilerServices;
+
+namespace Gestor.Application.Helpers
+{
+ public static class QueryableHelper
+ {
+ public static IOrderedQueryable<T> OrderBy<T>(this IQueryable<T> source, string propertyName)
+ {
+ return source.OrderBy<T, object>(QueryableHelper.ToLambda<T>(propertyName));
+ }
+
+ public static IOrderedQueryable<T> OrderByDescending<T>(this IQueryable<T> source, string propertyName)
+ {
+ return source.OrderByDescending<T, object>(QueryableHelper.ToLambda<T>(propertyName));
+ }
+
+ private static Expression<Func<T, object>> ToLambda<T>(string propertyName)
+ {
+ ParameterExpression parameterExpression = Expression.Parameter(typeof(T));
+ return Expression.Lambda<Func<T, object>>(Expression.Convert(Expression.Property(parameterExpression, propertyName), typeof(object)), new ParameterExpression[] { parameterExpression });
+ }
+ }
+}
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