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SortedList<TKey, TValue>.IndexOfKey Method

Searches for the specified key and returns the zero-based index within the entire SortedList<TKey, TValue>.

Namespace:  System.Collections.Generic
Assemblies:   System (in System.dll)
  System.Collections (in System.Collections.dll)

public int IndexOfKey(
	TKey key


Type: TKey

The key to locate in the SortedList<TKey, TValue>.

Return Value

Type: System.Int32
The zero-based index of key within the entire SortedList<TKey, TValue>, if found; otherwise, -1.


key is null.

This method performs a binary search; therefore, this method is an O(log n) operation, where n is Count.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0
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