ASP.NET Core 1.0 (formerly ASP.NET 5) provides a revamped Web development framework geared towards the requirements of modern Web applications. The new framework, currently in RC1, requires you to learn many new concepts not found in ASP.NET MVC 5. To that end, this article enumerates a few important features that ASP.NET MVC 5 developers should know as they prepare to learn this new framework.
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PM> install-package Newtonsoft.Json
var roles = new List<string>
{
"Admin",
"User"
};
string json = JsonConvert.SerializeObject(roles, Formatting.Indented); var jsonString = JsonConvert.SerializeObject(new
{
Id =1,
Name = "Test"
}, Formatting.Indented); var jsonData = JsonConvert.SerializeObject(new
{
Id = 1,
Name = "Test",
DateTime = DateTime.Now
}, new JsonSerializerSettings
{
Formatting = Formatting.Indented,
Converters =
{
new JavaScriptDateTimeConverter()
}
}); {
"Id": 1,
"Name": "Test",
"DateTime": new Date(1409821985245)
} using (var stream = File.CreateText(@"c:\output.json"))
{
var jsonSerializer = new JsonSerializer
{
Formatting = Formatting.Indented
};
jsonSerializer.Serialize(stream, new
{
Id = 1,
Name = "Test",
DateTime = DateTime.Now
});
} public class User
{
public int Id { set; get; }
public string Name { set; get; }
public DateTime DateTime { set; get; }
} var user = JsonConvert.DeserializeObject<User>(jsonData);
var user = JsonConvert.DeserializeObject<User>(jsonData, new JsonSerializerSettings
{
Converters = { new JavaScriptDateTimeConverter() }
}); JsonConvert.PopulateObject(jsonData, user);
var jsonData = JsonConvert.SerializeObject(object, new JsonSerializerSettings
{
NullValueHandling = NullValueHandling.Ignore,
Formatting = Formatting.Indented
}); public class Employee
{
public string Name { set; get; }
}
public class Manager : Employee
{
public IList<Employee> Reports { set; get; }
} var employee = new Employee { Name = "User1" };
var manager1 = new Manager { Name = "User2" };
var manager2 = new Manager { Name = "User3" };
manager1.Reports = new[] { employee, manager2 };
manager2.Reports = new[] { employee }; var list = JsonConvert.SerializeObject(manager1, Formatting.Indented);
{
"Reports": [
{
"Name": "User1"
},
{
"Reports": [
{
"Name": "User1"
}
],
"Name": "User3"
}
],
"Name": "User2"
} var list = JsonConvert.SerializeObject(manager1, new JsonSerializerSettings
{
Formatting = Formatting.Indented,
TypeNameHandling = TypeNameHandling.Objects,
PreserveReferencesHandling = PreserveReferencesHandling.Objects
});
{
"$id": "1",
"$type": "JsonNetTests.Manager, JsonNetTests",
"Reports": [
{
"$id": "2",
"$type": "JsonNetTests.Employee, JsonNetTests",
"Name": "User1"
},
{
"$id": "3",
"$type": "JsonNetTests.Manager, JsonNetTests",
"Reports": [
{
"$ref": "2"
}
],
"Name": "User3"
}
],
"Name": "User2"
} public class User
{
public int Id { set; get; }
[JsonIgnore]
public string Name { set; get; }
public DateTime DateTime { set; get; }
} [JsonProperty(PropertyName = "m_name", NullValueHandling = NullValueHandling.Ignore)]
public string Name { set; get; } [JsonObject(MemberSerialization.OptIn)]
public class User
{
public int Id { set; get; }
[JsonProperty]
public string Name { set; get; }
public DateTime DateTime { set; get; }
} [JsonConverter(typeof(JavaScriptDateTimeConverter))]
public DateTime DateTime { set; get; } public class HtmlColor
{
public int Red { set; get; }
public int Green { set; get; }
public int Blue { set; get; }
}
var colorJson = JsonConvert.SerializeObject(new HtmlColor
{
Red = 255,
Green = 0,
Blue = 0
}, Formatting.Indented); public class HtmlColorConverter : JsonConverter
{
public override bool CanConvert(Type objectType)
{
return objectType == typeof(HtmlColor);
}
public override object ReadJson(JsonReader reader, Type objectType,
object existingValue, JsonSerializer serializer)
{
throw new NotSupportedException();
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
var color = value as HtmlColor;
if (color == null)
return;
writer.WriteValue("#" + color.Red.ToString("X2")
+ color.Green.ToString("X2") + color.Blue.ToString("X2"));
}
} var colorJson = JsonConvert.SerializeObject(new HtmlColor
{
Red = 255,
Green = 0,
Blue = 0
}, new JsonSerializerSettings
{
Formatting = Formatting.Indented,
Converters = { new HtmlColorConverter() }
}); C# has been quietly taking the throne while other languages were busy tying their shoelaces. Let’s dive into why your next language of choice should probably be C#.
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ASP.NET Core MVC has introduced quite a few concepts that ....
static void Profile(string description, int iterations, Action func) {
// clean up
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
// warm up
func();
var watch = Stopwatch.StartNew();
for (int i = 0; i < iterations; i++) {
func();
}
watch.Stop();
Console.Write(description);
Console.WriteLine(" Time Elapsed {0} ms", watch.ElapsedMilliseconds);
}
Profile("a descriptions", how_many_iterations_to_run, () =>
{
// ... code being profiled
});
var iterations = 10000000;
var testString = ".NET Tips is awesme!";
do
{
var sb1 = new StringBuilder(testString);
var sb2 = new StringBuilder(testString) { Capacity = testString.Length * iterations };
try
{
Profiler.Profile("StringBuilder Profiler", iterations, () => sb1.Append(testString));
Profiler.Profile("StringBuilder Capacity Profiler", iterations, () => sb2.Append(testString));
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
Console.WriteLine("----------------------------------------------------------------");
sb1.Clear();
sb2.Clear();
}
} while (Console.ReadKey(true).Key == ConsoleKey.C); // C = continue
