Class EnumerableExtensions

Inheritance
System.Object
EnumerableExtensions
Namespace: Syncfusion.EJ2.Linq
Assembly: Syncfusion.EJ2.dll
Syntax
public static class EnumerableExtensions : Object

Methods

Average(IEnumerable<Int16>)

Declaration
public static double Average(this IEnumerable<short> source)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<System.Int16> source
Returns
Type Description
System.Double

Average(IEnumerable<Nullable<Int16>>)

Declaration
public static Nullable<double> Average(this IEnumerable<Nullable<short>> source)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<System.Nullable<System.Int16>> source
Returns
Type Description
System.Nullable<System.Double>

Average<TSource>(IEnumerable<TSource>, Func<TSource, Int16>)

Declaration
public static double Average<TSource>(this IEnumerable<TSource> source, Func<TSource, short> selector)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<TSource> source
System.Func<TSource, System.Int16> selector
Returns
Type Description
System.Double
Type Parameters
Name Description
TSource

Average<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int16>>)

Declaration
public static Nullable<double> Average<TSource>(this IEnumerable<TSource> source, Func<TSource, Nullable<short>> selector)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<TSource> source
System.Func<TSource, System.Nullable<System.Int16>> selector
Returns
Type Description
System.Nullable<System.Double>
Type Parameters
Name Description
TSource

Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int16>>)

Declaration
public static double Average<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, short>> selector)
Parameters
Type Name Description
System.Linq.IQueryable<TSource> source
System.Linq.Expressions.Expression<System.Func<TSource, System.Int16>> selector
Returns
Type Description
System.Double
Type Parameters
Name Description
TSource

Average<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int16>>>)

Declaration
public static Nullable<double> Average<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, Nullable<short>>> selector)
Parameters
Type Name Description
System.Linq.IQueryable<TSource> source
System.Linq.Expressions.Expression<System.Func<TSource, System.Nullable<System.Int16>>> selector
Returns
Type Description
System.Nullable<System.Double>
Type Parameters
Name Description
TSource

GetElementType(IEnumerable)

Declaration
public static Type GetElementType(this IEnumerable source)
Parameters
Type Name Description
System.Collections.IEnumerable source
Returns
Type Description
System.Type

GetGenericSourceType(IEnumerable)

Declaration
public static Type GetGenericSourceType(IEnumerable source)
Parameters
Type Name Description
System.Collections.IEnumerable source
Returns
Type Description
System.Type

GetItemPropertyInfo(IEnumerable)

Declaration
public static PropertyInfo GetItemPropertyInfo(this IEnumerable list)
Parameters
Type Name Description
System.Collections.IEnumerable list
Returns
Type Description
System.Reflection.PropertyInfo

GetItemType(IEnumerable, Boolean)

Declaration
public static Type GetItemType(this IEnumerable source, bool useRepresentativeItem)
Parameters
Type Name Description
System.Collections.IEnumerable source
System.Boolean useRepresentativeItem
Returns
Type Description
System.Type

GetParallelQuery(IEnumerable, Type)

Declaration
public static ParallelQuery GetParallelQuery(this IEnumerable source, Type sourceType = null)
Parameters
Type Name Description
System.Collections.IEnumerable source
System.Type sourceType
Returns
Type Description
System.Linq.ParallelQuery

GetParallelQueryFor<T>(IEnumerable)

Declaration
public static ParallelQuery<T> GetParallelQueryFor<T>(IEnumerable source)
Parameters
Type Name Description
System.Collections.IEnumerable source
Returns
Type Description
System.Linq.ParallelQuery<T>
Type Parameters
Name Description
T

IndexOf<T>(IEnumerable<T>, T)

Declaration
public static int IndexOf<T>(this IEnumerable<T> source, T value)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<T> source
T value
Returns
Type Description
System.Int32
Type Parameters
Name Description
T

InvokeParallelExecution<T>(IEnumerable, Predicate<Object>)

Declaration
public static ParallelQuery InvokeParallelExecution<T>(IEnumerable source, Predicate<object> func)
Parameters
Type Name Description
System.Collections.IEnumerable source
System.Predicate<System.Object> func
Returns
Type Description
System.Linq.ParallelQuery
Type Parameters
Name Description
T

Max(IEnumerable<Int16>)

Declaration
public static short Max(this IEnumerable<short> source)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<System.Int16> source
Returns
Type Description
System.Int16

Max(IEnumerable<Nullable<Int16>>)

Declaration
public static Nullable<short> Max(this IEnumerable<Nullable<short>> source)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<System.Nullable<System.Int16>> source
Returns
Type Description
System.Nullable<System.Int16>

Max<TSource>(IEnumerable<TSource>, Func<TSource, Int16>)

Declaration
public static short Max<TSource>(this IEnumerable<TSource> source, Func<TSource, short> selector)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<TSource> source
System.Func<TSource, System.Int16> selector
Returns
Type Description
System.Int16
Type Parameters
Name Description
TSource

Max<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int16>>)

Declaration
public static Nullable<short> Max<TSource>(this IEnumerable<TSource> source, Func<TSource, Nullable<short>> selector)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<TSource> source
System.Func<TSource, System.Nullable<System.Int16>> selector
Returns
Type Description
System.Nullable<System.Int16>
Type Parameters
Name Description
TSource

Max<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int16>>)

Declaration
public static short Max<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, short>> selector)
Parameters
Type Name Description
System.Linq.IQueryable<TSource> source
System.Linq.Expressions.Expression<System.Func<TSource, System.Int16>> selector
Returns
Type Description
System.Int16
Type Parameters
Name Description
TSource

Max<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int16>>>)

Declaration
public static Nullable<short> Max<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, Nullable<short>>> selector)
Parameters
Type Name Description
System.Linq.IQueryable<TSource> source
System.Linq.Expressions.Expression<System.Func<TSource, System.Nullable<System.Int16>>> selector
Returns
Type Description
System.Nullable<System.Int16>
Type Parameters
Name Description
TSource

Min(IEnumerable<Int16>)

Declaration
public static short Min(this IEnumerable<short> source)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<System.Int16> source
Returns
Type Description
System.Int16

Min(IEnumerable<Nullable<Int16>>)

Declaration
public static Nullable<short> Min(this IEnumerable<Nullable<short>> source)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<System.Nullable<System.Int16>> source
Returns
Type Description
System.Nullable<System.Int16>

Min<TSource>(IEnumerable<TSource>, Func<TSource, Int16>)

Declaration
public static short Min<TSource>(this IEnumerable<TSource> source, Func<TSource, short> selector)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<TSource> source
System.Func<TSource, System.Int16> selector
Returns
Type Description
System.Int16
Type Parameters
Name Description
TSource

Min<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int16>>)

Declaration
public static Nullable<short> Min<TSource>(this IEnumerable<TSource> source, Func<TSource, Nullable<short>> selector)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<TSource> source
System.Func<TSource, System.Nullable<System.Int16>> selector
Returns
Type Description
System.Nullable<System.Int16>
Type Parameters
Name Description
TSource

Min<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int16>>)

Declaration
public static short Min<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, short>> selector)
Parameters
Type Name Description
System.Linq.IQueryable<TSource> source
System.Linq.Expressions.Expression<System.Func<TSource, System.Int16>> selector
Returns
Type Description
System.Int16
Type Parameters
Name Description
TSource

Min<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int16>>>)

Declaration
public static Nullable<short> Min<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, Nullable<short>>> selector)
Parameters
Type Name Description
System.Linq.IQueryable<TSource> source
System.Linq.Expressions.Expression<System.Func<TSource, System.Nullable<System.Int16>>> selector
Returns
Type Description
System.Nullable<System.Int16>
Type Parameters
Name Description
TSource

OrderBy<T>(IEnumerable<T>, String, Func<String, Object, Object>)

Declaration
public static IEnumerable<T> OrderBy<T>(this IEnumerable<T> entities, string propertyName, Func<string, object, object> GetFunc)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<T> entities
System.String propertyName
System.Func<System.String, System.Object, System.Object> GetFunc
Returns
Type Description
System.Collections.Generic.IEnumerable<T>
Type Parameters
Name Description
T

OrderBy<T>(IEnumerable<T>, String, Func<String, Object, Object>, IComparer<Object>)

Declaration
public static IEnumerable<T> OrderBy<T>(this IEnumerable<T> entities, string propertyName, Func<string, object, object> GetFunc, IComparer<object> comparer)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<T> entities
System.String propertyName
System.Func<System.String, System.Object, System.Object> GetFunc
System.Collections.Generic.IComparer<System.Object> comparer
Returns
Type Description
System.Collections.Generic.IEnumerable<T>
Type Parameters
Name Description
T

OrderByDescending<T>(IEnumerable<T>, String, Func<String, Object, Object>)

Declaration
public static IEnumerable<T> OrderByDescending<T>(this IEnumerable<T> entities, string propertyName, Func<string, object, object> GetFunc)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<T> entities
System.String propertyName
System.Func<System.String, System.Object, System.Object> GetFunc
Returns
Type Description
System.Collections.Generic.IEnumerable<T>
Type Parameters
Name Description
T

OrderByDescending<T>(IEnumerable<T>, String, Func<String, Object, Object>, IComparer<Object>)

Declaration
public static IEnumerable<T> OrderByDescending<T>(this IEnumerable<T> entities, string propertyName, Func<string, object, object> GetFunc, IComparer<object> comparer)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<T> entities
System.String propertyName
System.Func<System.String, System.Object, System.Object> GetFunc
System.Collections.Generic.IComparer<System.Object> comparer
Returns
Type Description
System.Collections.Generic.IEnumerable<T>
Type Parameters
Name Description
T

Sum(IEnumerable<Int16>)

Declaration
public static short Sum(this IEnumerable<short> source)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<System.Int16> source
Returns
Type Description
System.Int16

Sum(IEnumerable<Nullable<Int16>>)

Declaration
public static Nullable<short> Sum(this IEnumerable<Nullable<short>> source)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<System.Nullable<System.Int16>> source
Returns
Type Description
System.Nullable<System.Int16>

Sum<TSource>(IEnumerable<TSource>, Func<TSource, Int16>)

Declaration
public static short Sum<TSource>(this IEnumerable<TSource> source, Func<TSource, short> selector)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<TSource> source
System.Func<TSource, System.Int16> selector
Returns
Type Description
System.Int16
Type Parameters
Name Description
TSource

Sum<TSource>(IEnumerable<TSource>, Func<TSource, Nullable<Int16>>)

Declaration
public static Nullable<short> Sum<TSource>(this IEnumerable<TSource> source, Func<TSource, Nullable<short>> selector)
Parameters
Type Name Description
System.Collections.Generic.IEnumerable<TSource> source
System.Func<TSource, System.Nullable<System.Int16>> selector
Returns
Type Description
System.Nullable<System.Int16>
Type Parameters
Name Description
TSource

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Int16>>)

Declaration
public static short Sum<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, short>> selector)
Parameters
Type Name Description
System.Linq.IQueryable<TSource> source
System.Linq.Expressions.Expression<System.Func<TSource, System.Int16>> selector
Returns
Type Description
System.Int16
Type Parameters
Name Description
TSource

Sum<TSource>(IQueryable<TSource>, Expression<Func<TSource, Nullable<Int16>>>)

Declaration
public static Nullable<short> Sum<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, Nullable<short>>> selector)
Parameters
Type Name Description
System.Linq.IQueryable<TSource> source
System.Linq.Expressions.Expression<System.Func<TSource, System.Nullable<System.Int16>>> selector
Returns
Type Description
System.Nullable<System.Int16>
Type Parameters
Name Description
TSource

ThenBy<T>(IOrderedEnumerable<T>, String, Func<String, Object, Object>)

Declaration
public static IEnumerable<T> ThenBy<T>(this IOrderedEnumerable<T> entities, string propertyName, Func<string, object, object> GetFunc)
Parameters
Type Name Description
System.Linq.IOrderedEnumerable<T> entities
System.String propertyName
System.Func<System.String, System.Object, System.Object> GetFunc
Returns
Type Description
System.Collections.Generic.IEnumerable<T>
Type Parameters
Name Description
T

ThenBy<T>(IOrderedEnumerable<T>, String, Func<String, Object, Object>, IComparer<Object>)

Declaration
public static IEnumerable<T> ThenBy<T>(this IOrderedEnumerable<T> entities, string propertyName, Func<string, object, object> GetFunc, IComparer<object> comparer)
Parameters
Type Name Description
System.Linq.IOrderedEnumerable<T> entities
System.String propertyName
System.Func<System.String, System.Object, System.Object> GetFunc
System.Collections.Generic.IComparer<System.Object> comparer
Returns
Type Description
System.Collections.Generic.IEnumerable<T>
Type Parameters
Name Description
T

ThenByDescending<T>(IOrderedEnumerable<T>, String, Func<String, Object, Object>)

Declaration
public static IEnumerable<T> ThenByDescending<T>(this IOrderedEnumerable<T> entities, string propertyName, Func<string, object, object> GetFunc)
Parameters
Type Name Description
System.Linq.IOrderedEnumerable<T> entities
System.String propertyName
System.Func<System.String, System.Object, System.Object> GetFunc
Returns
Type Description
System.Collections.Generic.IEnumerable<T>
Type Parameters
Name Description
T

ThenByDescending<T>(IOrderedEnumerable<T>, String, Func<String, Object, Object>, IComparer<Object>)

Declaration
public static IEnumerable<T> ThenByDescending<T>(this IOrderedEnumerable<T> entities, string propertyName, Func<string, object, object> GetFunc, IComparer<object> comparer)
Parameters
Type Name Description
System.Linq.IOrderedEnumerable<T> entities
System.String propertyName
System.Func<System.String, System.Object, System.Object> GetFunc
System.Collections.Generic.IComparer<System.Object> comparer
Returns
Type Description
System.Collections.Generic.IEnumerable<T>
Type Parameters
Name Description
T