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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(32, 91%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EGS%3C/text%3E%3C/svg%3E)
Hi I have written code in mvc to send email. I have localisation for website. When i send an attachment in French .example file name HDFC po 2341. The email is not sent. Getting status as false. Used mailmessage. Need help
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(60.8, 4%, 15%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EQM%3C/text%3E%3C/svg%3E)
Hi @Guhananth S
This problem can occur for a number of reasons, the main of which is that the transfer encoding is causing the problem. You didn't mention the file type of your attachment in the question, and the transfer encoding may vary for different file types. It also has something to do with the smtp port you use. All of this can be the cause, but you still need to determine the problem based on your code.
Best Regards
Qi You
We are uploading excel file.used port number,server name,enablessl= true
For Japan and Chinese language some excel are not uploading ..
Japanese and Chinese attachment some emails are not sent
The community cannot provide debugging assistance without the actual error and source code to reproduce this issue.
Public httpresponsemessage getorderreport(int id, string language='',string type='pdf')Var rep= new ReportViewerBuilder().AddDataSet('po',purchaseorders.ToList().SetParameters(parameter list).SetTemplateurl(reportTemplatePath).SetReportType(type).BuildReport();Throw error
The code has syntax errors cannot be the actual code.
The error message indicates you are using a mockidentity type that is not marked as serializable. Have you tried adding the [Serializable] attribute to the type? Can you share the mockidentity class?
Unfortunately, you did not share anything the community can use to help you.
Did you at least try to lookup the error?
https://www.google.com/search?q=is+not+marked+as+serializable
Have you tried to debug your code?