NameValueCollection.GetKey(Int32) Method

Reference

Definition

Namespace:: System.Collections.Specialized

Assemblies:: System.dll, System.Collections.Specialized.dll

Assemblies:: netstandard.dll, System.Collections.Specialized.dll

Assembly:: System.Collections.Specialized.dll

Assembly:: System.dll

Assembly:: netstandard.dll

Source:: NameValueCollection.cs

Source:: NameValueCollection.cs

Source:: NameValueCollection.cs

Important

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Gets the key at the specified index of the NameValueCollection.

public:
 virtual System::String ^ GetKey(int index);

public virtual string GetKey(int index);

public virtual string? GetKey(int index);

abstract member GetKey : int -> string
override this.GetKey : int -> string

Public Overridable Function GetKey (index As Integer) As String

Parameters

index: Int32

The zero-based index of the key to get from the collection.

Returns

String

A String that contains the key at the specified index of the NameValueCollection, if found; otherwise, null.

Exceptions

ArgumentOutOfRangeException

index is outside the valid range of indexes for the collection.

Remarks

This method is an O(1) operation.

Applies to

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	2.0, 2.1
UWP	10.0

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