JsonWebToken.GetHeaderValue<T>(String) Method

Reference

Definition

Namespace:: Microsoft.IdentityModel.JsonWebTokens

Assembly:: Microsoft.IdentityModel.JsonWebTokens.dll

Package:: Microsoft.IdentityModel.JsonWebTokens v8.2.1

Important

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Gets the 'value' corresponding to key from the JWT header transformed as type 'T'.

public T GetHeaderValue<T> (string key);

member this.GetHeaderValue : string -> 'T

Public Function GetHeaderValue(Of T) (key As String) As T

Type Parameters

T

Parameters

key: String

Returns

The value as T.

Exceptions

ArgumentException

Thrown if claim is not found or a transformation to T cannot be made.

Remarks

The expectation is that the 'value' corresponds to a type are expected in a JWT token. The 5 basic types: number, string, true / false, nil, array (of basic types). This is not a general purpose translation layer for complex types.

Applies to

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