KGy SOFT

EnumerableExtensionsIndexOfT Method (IEnumerableT, FuncT, Boolean)

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Searches for an element in the source enumeration where the specified predicate returns .

Namespace:  KGySoft.CoreLibraries
Assembly:  KGySoft.CoreLibraries (in KGySoft.CoreLibraries.dll) Version: 5.0.0
Syntax

public static int IndexOf<T>(
	this IEnumerable<T> source,
	Func<T, bool> predicate
)

Parameters

source
Type: System.Collections.GenericIEnumerableT
The source enumeration to search.
predicate
Type: SystemFuncT, Boolean
The predicate to use for the search.

Type Parameters

T
The type of the elements in the enumeration..

Return Value

Type: Int32
The index of the found element, or -1 if there was no match.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableT. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
Exceptions

ExceptionCondition
ArgumentNullExceptionsource or predicate is .
See Also

Reference