邀请流程的工作示例是here https://github.com/Azure-Samples/active-directory-b2c-advanced-policies/tree/master/wingtipgamesb2c.
In the WingTipGamesWebApplication项目，该InvitationController控制器类有两个操作方法，Create and Redeem.
The Create操作方法将签名的兑换链接发送到受邀用户的电子邮件地址。此兑换链接包含此电子邮件地址。它还可以包含邀请码。
The Redeem操作方法处理兑换链接。它传递电子邮件地址，作为已验证的电子邮件使用 Wingtip Games 应用程序的客户端密钥签名的 JWT 中的声明（请参阅CreateSelfIssuedToken方法中的Startup类中的WingTipGamesWebApplication项目），从兑换链接到邀请函政策。它还可以传递邀请码。
The 邀请函政策可以在以下位置找到：here https://github.com/Azure-Samples/active-directory-b2c-advanced-policies/blob/master/wingtipgamesb2c/Policies/b2ctechready.onmicrosoft.com_B2C_1A_invitation.xml.
The 邀请函政策宣布已验证的电子邮件声明作为输入声明：
<RelyingParty>
<DefaultUserJourney ReferenceId="Invitation" />
<TechnicalProfile Id="Invitation">
<InputTokenFormat>JWT</InputTokenFormat>
<CryptographicKeys>
<Key Id="client_secret" StorageReferenceId="WingTipGamesClientSecret" />
</CryptographicKeys>
<InputClaims>
<InputClaim ClaimTypeReferenceId="extension_VerifiedEmail" />
</InputClaims>
</TechnicalProfile>
</RelyingParty>
The 扩展名验证电子邮件声明类型，声明为只读字段（以便最终用户无法修改），映射到已验证的电子邮件输入声明：
<BuildingBlocks>
<ClaimsSchema>
<ClaimType Id="extension_VerifiedEmail">
<DisplayName>Verified Email</DisplayName>
<DataType>string</DataType>
<DefaultPartnerClaimTypes>
<Protocol Name="OAuth2" PartnerClaimType="verified_email" />
<Protocol Name="OpenIdConnect" PartnerClaimType="verified_email" />
<Protocol Name="SAML2" PartnerClaimType="http://schemas.wingtipb2c.net/identity/claims/verifiedemail" />
</DefaultPartnerClaimTypes>
<UserInputType>Readonly</UserInputType>
</ClaimType>
</ClaimsSchema>
</BuildingBlocks>
The 邀请函用户旅程可以在here https://github.com/Azure-Samples/active-directory-b2c-advanced-policies/blob/master/wingtipgamesb2c/Policies/b2ctechready.onmicrosoft.com_B2C_1A_base.xml.
第二个编排步骤邀请函用户旅程执行本地帐户-注册-验证电子邮件技术简介：
<UserJourney Id="Invitation">
<OrchestrationSteps>
...
<OrchestrationStep Order="2" Type="ClaimsExchange">
<ClaimsExchanges>
...
<ClaimsExchange Id="LocalAccountRegistrationExchange" TechnicalProfileReferenceId="LocalAccount-Registration-VerifiedEmail" />
</ClaimsExchanges>
</OrchestrationStep>
</OrchestrationSteps>
</UserJourney>
The 本地帐户-注册-验证电子邮件技术配置文件使用经过验证的电子邮件地址注册本地帐户：
<TechnicalProfile Id="LocalAccount-Registration-VerifiedEmail">
<DisplayName>WingTip Account</DisplayName>
<Protocol Name="Proprietary" Handler="Web.TPEngine.Providers.SelfAssertedAttributeProvider, Web.TPEngine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
<Metadata>
<Item Key="ContentDefinitionReferenceId">api.localaccount.registration</Item>
<Item Key="IpAddressClaimReferenceId">IpAddress</Item>
<Item Key="language.button_continue">Create</Item>
</Metadata>
<CryptographicKeys>
<Key Id="issuer_secret" StorageReferenceId="TokenSigningKeyContainer" />
</CryptographicKeys>
<InputClaimsTransformations>
<InputClaimsTransformation ReferenceId="CreateEmailFromVerifiedEmail" />
</InputClaimsTransformations>
<InputClaims>
<InputClaim ClaimTypeReferenceId="extension_VerifiedEmail" />
</InputClaims>
<OutputClaims>
<OutputClaim ClaimTypeReferenceId="extension_VerifiedEmail" Required="true" />
<OutputClaim ClaimTypeReferenceId="newPassword" Required="true" />
<OutputClaim ClaimTypeReferenceId="reenterPassword" Required="true" />
<OutputClaim ClaimTypeReferenceId="displayName" Required="true" />
<OutputClaim ClaimTypeReferenceId="authenticationSource" DefaultValue="localAccountAuthentication" />
<OutputClaim ClaimTypeReferenceId="executed-SelfAsserted-Input" DefaultValue="true" />
<OutputClaim ClaimTypeReferenceId="newUser" />
<OutputClaim ClaimTypeReferenceId="objectId" />
<OutputClaim ClaimTypeReferenceId="sub" />
<OutputClaim ClaimTypeReferenceId="userPrincipalName" />
</OutputClaims>
<ValidationTechnicalProfiles>
<ValidationTechnicalProfile ReferenceId="AzureActiveDirectoryStore-WriteUserByEmail-ThrowIfExists" />
</ValidationTechnicalProfiles>
<UseTechnicalProfileForSessionManagement ReferenceId="SSOSession-AzureActiveDirectory" />
</TechnicalProfile>
本地账户注册前Azure Active Directory 存储-通过电子邮件写入用户-ThrowIf 存在验证技术概况，从已验证的电子邮件创建电子邮件索赔转换复制已验证的电子邮件声称对email claim:
<ClaimsTransformation Id="CreateEmailFromVerifiedEmail" TransformationMethod="FormatStringClaim">
<InputClaims>
<InputClaim ClaimTypeReferenceId="extension_VerifiedEmail" TransformationClaimType="inputClaim" />
</InputClaims>
<InputParameters>
<InputParameter Id="stringFormat" DataType="string" Value="{0}" />
</InputParameters>
<OutputClaims>
<OutputClaim ClaimTypeReferenceId="email" TransformationClaimType="outputClaim" />
</OutputClaims>
</ClaimsTransformation>
要将邀请码保存到本地帐户，您必须：
- 将“extension_InvitationCode”声明添加到声明架构中
- 将其作为输入声明添加到邀请函 policy
- 将其作为输入声明添加到本地帐户-注册-验证电子邮件技术简介
- 将其作为持久声明添加到Azure Active Directory 存储-通过电子邮件写入用户-ThrowIf Exist技术简介
