I have the generic method to parse the json response but when I tries to call it in my method I'm getting an error " The Type TOut must be a reference type in order to use it as a parameter T in the generic type of method". Please help and Let me know how to call the generic method.
private static T TryParse<T>(string input, T defaultVal = default(T)) where T : class
{
try
{
var result = Newtonsoft.Json.JsonConvert.DeserializeObject<T>(input);
return result;
}
catch (Exception)
{
return defaultVal;
}
}
public async Task<Tuple<bool, string, TOut>> GetAsync<TOut>(
Func<string, bool> successTest = null,
Dictionary<string, string> parameters = null)
{
var result = await GetAsync(parameters);
var response = await GetResponseContentAsync(result.Content);
var responseObj = TryParse<TOut>(response);
return Tuple.Create(true, response, responseObj);
}
Your TryParse<T>
method says that T
must be a class ( where T : class
). Your GetAsync<TOut>
method lets T
be anything - there's no restriction on it.
However, TOut
is used as T
when calling TryParse
. Here's the problem - TOut
can be anything, but T
can only be a class.
Either remove the where T : class
restriction from TryParse
, or add it to GetAsync
( where TOut : class
). Which you do depends on your requirements.
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