如何使用托管UI从C#代码更新Cognito用户属性？

Question

【以下的问题经过翻译处理】 我正在使用Cognito Hosted UI与C#项目，可以获取当前用户的详细信息，但无法更新当前用户的属性。

我正在寻找解决方案。我相信可以使用Amazon.CognitoIdentityProvider中的UpdateUserAttributesAsync函数，但我不知道如何从UpdateUserAttributesRequest类中获取AccessToken。

您能否指导或告诉我如何修改用户属性？

```
AWSCredentials awsCredentials = new BasicAWSCredentials("accessKey", "secretKey");

AmazonCognitoIdentityProviderClient cognitoClient = new(awsCredentials);

UpdateUserAttributesRequest updateUserAttributesRequest = new()
{ 
     //AccessToken = Azure.Core.Token
 };

List userAttributes = new()
{
       new AttributeType() { Name = "email", Value = "allo@test.com" },
       new AttributeType() { Name = "custom:PhoneNumber", Value = "888 888 8888" }
};

updateUserAttributesRequest.UserAttributes = userAttributes;
var testss = await cognitoClient.UpdateUserAttributesAsync(updateUserAttributesRequest);
```

Answer

【以下的回答经过翻译处理】 您可以通过下面的函数获取accessToken，这里是stackoverflow答案的链接。

```
public static async Task GetCredsAsync()
        {
            AmazonCognitoIdentityProviderClient provider = new AmazonCognitoIdentityProviderClient(new AnonymousAWSCredentials(), Amazon.RegionEndpoint.USEast1);
            CognitoUserPool userPool = new("", "", provider, "");
            CognitoUser user = new("", "", userPool, provider, "");
            InitiateSrpAuthRequest authRequest = new()
            {
                Password = ""
            };

AuthFlowResponse authResponse = await user.StartWithSrpAuthAsync(authRequest).ConfigureAwait(false);
            var accessToken = authResponse.AuthenticationResult.AccessToken;
            return accessToken;
        }

```

如何使用托管UI从C#代码更新Cognito用户属性？

Relevanter Inhalt