从对象中删除null属性 [英] Remove the null property from object

问题描述

，我有一个类，其中现在有三个属性，我要执行的操作是，如果在对象中是否为null或空，那么我想从下面的对象中删除它是我的代码.

,I have one class in which I have three properties now what I want to do, if in the object if any one of null or empty then I want to remove it from the object below is my code.

public class TestClass
{
    public string Name { get; set; }
    public int ID { get; set; }
    public DateTime? DateTime { get; set; }
    public string Address { get; set; }
}
       TestClass t=new TestClass();
        t.Address="address";
        t.ID=132;
        t.Name=string.Empty;
        t.DateTime=null;

现在，我需要TestClass的对象，但在Name和DateTime属性中不应将它们作为对象，是否可以?请帮助我

Now here I want the object of TestClass but in that Name and DateTime property should not be their in the object, is it possible? Please help me

推荐答案

我很无聊，并把它放在LINQPad中

I was bored and got this in LINQPad

void Main()
{
    TestClass t=new TestClass();
    t.Address="address";
    t.ID=132;
    t.Name=string.Empty;
    t.DateTime=null;

    t.Dump();
    var ret = t.FixMeUp();
    ((object)ret).Dump();
}

public static class ReClasser
{
    public static dynamic FixMeUp<T>(this T fixMe)
    {
        var t = fixMe.GetType();
        var returnClass = new ExpandoObject() as IDictionary<string, object>;
        foreach(var pr in t.GetProperties())
        {
            var val = pr.GetValue(fixMe);
            if(val is string && string.IsNullOrWhiteSpace(val.ToString()))
            {
            }
            else if(val == null)
            {
            }
            else
            {
                returnClass.Add(pr.Name, val);
            }
        }
        return returnClass;
    }
}

public class TestClass
{
    public string Name { get; set; }
    public int ID { get; set; }
    public DateTime? DateTime { get; set; }
    public string Address { get; set; }
}

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