nullable int which is key in dapper and getting casting errors?

do this

[ExplicitKey]
        [Computed]

see why POST data is null

 public int SaveBlah([FromBody] Object blah)
        {
             var jsonString = blah.ToString();
             Blah result = JsonConvert.DeserializeObject<B;ah>(jsonString);
}

VS Project wont go in debug - no compile errors on VS

run dotnet run project file name at the root folder
now you will see the error

Access to the path errors

delete bin and obj folders
make sure you are running as Admin

get request info in c# from RequestMessage

response.RequestMessage.Content.ReadAsStringAsync().Result

delete duplicate rows

WITH CTE AS
(
SELECT *,ROW_NUMBER() OVER (PARTITION BY [TagID],[TemplateID] ORDER BY  [TagID],[TemplateID]) AS RN
FROM [TPDocCore].[TagTemplatexRef]
)

DELETE FROM CTE WHERE RN<>1

Unable to copy file, Access to the path is denied

here