c# Graph Api > 5..0.15 Content.GetAsync() not working any more

Question

c# Graph Api > 5..0.15 Content.GetAsync() not working any more

Uwe Schöneis 10

// https://learn.microsoft.com/en-us/answers/questions/1025116/how-to-download-a-mail-graph-api-c?orderby=oldest
Stream mimeContentStream = await _graphClient.Users[{someUseriD}].Messages[{aMessageId}].Content.GetAsync();
string mailFile = "anyFileName.eml";
using (var fileStream = System.IO.File.Create(mailFile))               
{
	mimeContentStream.Seek(0, SeekOrigin.Begin);
	mimeContentStream.CopyTo(fileStream);
};

On updating the graph API from 5.0.15 to any higher version mimeContentStream is invalid.
Is this by design? If the request is no longer supported there should be at least an error, exception, or whatever.
Returning an invalid stream is NOT an option as it breaks the compatibility whith the existing code, based on Graph API 5.0.x.

jcq 6 Reputation points

2023-08-25T14:17:07.3+00:00

Did you solve your problem? I'm facing same problem.
Uwe Schöneis 10 Reputation points

2023-08-25T14:28:57.1+00:00

No, I couldn't solve it. I downgraded to 5.0.15 and got it working again. I will try newer versions as they become available. I implemented an HttpRequest interface that can get me $value of an mailitem. But the .Content variant is better code in my opinion.
jcq 6 Reputation points

2023-09-25T10:51:27.7166667+00:00

Just tested with latest Microsoft Graph 5.28, and the problem still persists! It is really a breaking change...
Uwe Schöneis 0 Reputation points

2023-09-25T12:30:24.7466667+00:00

I think it is part of their strategy, to restrict access to Online Items. Even One Outlook does not have a file interface (no way to save a mail in One Outlook to local disk). Where could we escalate the issue?
jcq 6 Reputation points

2023-09-26T15:05:58.8466667+00:00
Here the solution, it works for me:

https://github.com/microsoftgraph/msgraph-sdk-dotnet/issues/2144

var res = await graphServiceClient.Me.Messages["{message-id}"].Content.GetAsync(); var data = new StreamReader(res).ReadToEnd();
Nelson, Joel 0 Reputation points

2024-02-21T18:06:06.34+00:00

Has anyone solved this yet? I've tried many ways to get it to work with newer versions of Microsoft.Graph but still can't get anything to work properly. Please Microsoft, get this fixed or provide how to get it to work.
Uwe Schöneis 0 Reputation points

2024-02-22T07:04:26.8633333+00:00

I send a HttpRequest directly to graph and evaluate the response. You need to write your own method ProcessHttpRequest, which I added to my AuthenticationHelper class, to follow my sample

string uri = $"{<GraphBaseUrl>}/users/{<userid>}}/messages/{<messageId>}/$value";

StringContent requestBody = null; HttpStatusCode ret = HttpStatusCode.OK;

HttpResponseMessage response = await GraphConfidentialAuthenticationHelper.ProcessHttpRequest(HttpMethod.Get, uri, requestBody);

ret = response.StatusCode; ... string emlContent = await response.Content.ReadAsStringAsync();

2 answers

Your answer

jcq 6 Reputation points

2023-08-25T14:17:07.3+00:00

Did you solve your problem? I'm facing same problem.
Uwe Schöneis 10 Reputation points

2023-08-25T14:28:57.1+00:00

No, I couldn't solve it. I downgraded to 5.0.15 and got it working again. I will try newer versions as they become available. I implemented an HttpRequest interface that can get me $value of an mailitem. But the .Content variant is better code in my opinion.
jcq 6 Reputation points

2023-09-25T10:51:27.7166667+00:00

Just tested with latest Microsoft Graph 5.28, and the problem still persists! It is really a breaking change...
Uwe Schöneis 0 Reputation points

2023-09-25T12:30:24.7466667+00:00

I think it is part of their strategy, to restrict access to Online Items. Even One Outlook does not have a file interface (no way to save a mail in One Outlook to local disk). Where could we escalate the issue?
jcq 6 Reputation points

2023-09-26T15:05:58.8466667+00:00

Here the solution, it works for me:

https://github.com/microsoftgraph/msgraph-sdk-dotnet/issues/2144

var res = await graphServiceClient.Me.Messages["{message-id}"].Content.GetAsync(); var data = new StreamReader(res).ReadToEnd();
Nelson, Joel 0 Reputation points

2024-02-21T18:06:06.34+00:00

Has anyone solved this yet? I've tried many ways to get it to work with newer versions of Microsoft.Graph but still can't get anything to work properly. Please Microsoft, get this fixed or provide how to get it to work.
Uwe Schöneis 0 Reputation points

2024-02-22T07:04:26.8633333+00:00

I send a HttpRequest directly to graph and evaluate the response. You need to write your own method ProcessHttpRequest, which I added to my AuthenticationHelper class, to follow my sample

string uri = $"{<GraphBaseUrl>}/users/{<userid>}}/messages/{<messageId>}/$value";

StringContent requestBody = null; HttpStatusCode ret = HttpStatusCode.OK;

HttpResponseMessage response = await GraphConfidentialAuthenticationHelper.ProcessHttpRequest(HttpMethod.Get, uri, requestBody);

ret = response.StatusCode; ... string emlContent = await response.Content.ReadAsStringAsync();

Answer 1

jcq 6

Here i have solution with 5.28:

https://github.com/microsoftgraph/msgraph-sdk-dotnet/issues/2144

And this worked for me, my problem was with reading the stream (old method doesn't work anymore).

var res = await graphServiceClient.Me.Messages["{message-id}"].Content.GetAsync();
var data = new StreamReader(res).ReadToEnd();

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Answer 2

Uwe Schöneis 0

Thanks jcq for digging into it! It works including V5.0.15. Hopefully MS will provide working sample code as they change the graph version ....

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c# Graph Api > 5..0.15 Content.GetAsync() not working any more

2 answers

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