mini-software/valuegetter

Mini Object GetValue Library

English | 中文

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Online Demo

ValueGetter Demo | .NET Fiddle

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Feature:

• Mini (you can just copy/paste a ValueGetter.cs file to project)
• Faster Than Reflection GetValue (Click To [BenchmarkDotNet])
• Support net40;net45;net451;net46;netstandard2.0; frameworks

Installation

You can install the package from NuGet using the Visual Studio Package Manager or NuGet UI:

PM> install-package ValueGetter

or the dotnet command line:

dotnet add package ValueGetter

GetStart:

Get all the property values of object, return Dictionary<string,object> type

    var data = new MyClass() { MyProperty1 = 123, MyProperty2 = "test" };
    var result = data.GetObjectValues();
    //Result:
    Assert.AreEqual(123, result["MyProperty1"]);
    Assert.AreEqual("test", result["MyProperty2"]);

Get all properties ToString value of the object, return Dictionary<string,string> type

    var data = new MyClass() { MyProperty1 = 123, MyProperty2 = "test" };
    var result = data.GetToStringValues();
    //Result:
    Assert.AreEqual("123", result["MyProperty1"]);
    Assert.AreEqual("test", result["MyProperty2"]);

Get single property value of object,return object type.

    var data = new MyClass() { MyProperty1 = 123 };
    var prop = data.GetType().GetProperty("MyProperty1");
    var result = prop.GetObjectValue(data);
    //Result:
    Assert.AreEqual(123, result);

Get single property ToString value of object,return string type.

    var data = new MyClass() { MyProperty1 = 123 };
    var prop = data.GetType().GetProperty("MyProperty1");
    var result = prop.GetToStringValue(data);
    //Result:
    Assert.AreEqual("123", result);

GetPropertiesFromCache

var data = new MyClass { MyProperty1 = 123, MyProperty2 = "123" };
var props = data.GetPropertiesDictionaryFromCache();  //IDictionary<string, PropertyInfo>
or
var props = data.GetPropertiesFromCache(); //IList<PropertyInfo>

BenchmarkDotNet

Logic:

public class BenchmarkBase
{
    private static List<MyClass> Data = Enumerable.Range(1,100).Select(s=>new MyClass() { MyProperty1 = 123, MyProperty2 = "test" }).ToList();

    [Benchmark()]
    public  void Reflection() => Data.Select(instance => {
        var type = instance.GetType();
        var props = type.GetProperties();
        return props.ToDictionary(key => key.Name, value => value.GetValue(instance));
    }).ToList();

    [Benchmark()]
    public void ReflectionToString() => Data.Select(instance => {
        var type = instance.GetType();
        var props = type.GetProperties();
        return props.ToDictionary(key => key.Name, value => value.GetValue(instance).ToString());
    }).ToList();

    [Benchmark()]
    public void GetObjectValues() => Data.Select(s => s.GetObjectValues()).ToList();

    [Benchmark()]
    public void GetObjectToStringValues() => Data.Select(s => s.GetToStringValues()).ToList();
}

Result:

BenchmarkDotNet=v0.11.1, OS=Windows 10.0.17134.648 (1803/April2018Update/Redstone4)
Intel Core i7-7700 CPU 3.60GHz (Kaby Lake), 1 CPU, 8 logical and 4 physical cores
  [Host]   : .NET Framework 4.7.2 (CLR 4.0.30319.42000), 64bit RyuJIT-v4.7.3362.0
  ShortRun : .NET Framework 4.7.2 (CLR 4.0.30319.42000), 64bit RyuJIT-v4.7.3362.0

Method	Mean	Gen 0	Allocated
GetObjectValues	32.93 us	9.8750	40.51 KB
GetObjectToStringValues	38.23 us	10.0625	41.29 KB
Reflection	54.40 us	10.0625	41.29 KB
ReflectionToString	60.24 us	10.8125	44.42 KB

valuegetter's Issues

Support ExpandoObject

Support ExpandoObject

        [TestMethod]
        public void ExpandoObjectTest()
        {
            dynamic data = new System.Dynamic.ExpandoObject();
            data.MyProperty1 = 123;
            data.MyProperty2 = "test";

            var result = data.GetObjectValues(); //Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: ''System.Dynamic.ExpandoObject' does not contain a definition for 'GetObjectValues''

            Assert.AreEqual(123, result["MyProperty1"]);
            Assert.AreEqual("test", result["MyProperty2"]);
        }

If Property Value Is Null GetToStringValue will get System.NullReferenceException

        [TestMethod]
        public void PropertyValueIsNull()
        {
            MyClass data = new MyClass { MyProperty2=null} ;
            var props = typeof(MyClass).GetProperties();
            foreach (var prop in props)
            {
                var result = prop.GetToStringValue(data); //System.NullReferenceException: 'Object reference not set to an instance of an object.'
            }
        }