使用Path语法取得对象的值
借鉴了http://stackoverflow.com/questions/4473928/c-sharp-dynamic-string-property-path
public class ReflectUtil
{
public static object ReflectOnPath(object o, string path)
{
object value = o;
string[] pathComponents = path.Split('.');
foreach (var component in pathComponents)
{
var x = component.Split(':');
value = value.GetType().GetProperty(x[0]).GetValue(value, null);
if (value.GetType().IsArray)
{
int[] index = null;
if (x.Length > 1)
index = x.Skip(1).Take(int.MaxValue).Select(y => int.Parse(y)).ToArray();
if (index != null) value = ((Array)value).GetValue(index);
}
}
return value;
}
}
Example:
[TestMethod]
public void TestGetValue()
{
var o = new DistributeCfg
{
Configs = new[]
{
new Config.Config
{
AppType = "v",
CallbackUrl = "fasdfasdf",
Key = "k",
NoticePostDataSetting = new PostDataSetting
{
Args = new Arg[]
{
new Arg
{
Name = "name1",
Value = "a.b.c"
},
new Arg
{
Name = "name2",
Value = "a.b.c"
}
}
},
PredictPostDataSetting = new PostDataSetting
{
Args = new Arg[]
{
new Arg
{
Name = "name1",
Value = "Predict.b.c"
},
new Arg
{
Name = "name2",
Value = "Predict.b.c"
}
},
DeleteFlgSetting = new DeleteFlgSetting
{
Audit = "1,2",
Delete = "9",
Pass = "10"
}
},
},
new Config.Config
{
AppType = "v",
CallbackUrl = "asdfasdfasdf",
Key = "k",
NoticePostDataSetting = new PostDataSetting
{
Args = new Arg[]
{
new Arg
{
Name = "name1",
Value = "a.b.c"
},
new Arg
{
Name = "name2",
Value = "a.b.c"
}
}
},
PredictPostDataSetting = new PostDataSetting
{
Args = new Arg[]
{
new Arg
{
Name = "name1",
Value = "Predict.b.c"
},
new Arg
{
Name = "name2",
Value = "Predict.b.c"
}
},
DeleteFlgSetting = new DeleteFlgSetting
{
Audit = "1,2",
Delete = "9",
Pass = "10"
}
},
}
}
};
//var d = o.GetType().GetField("Configs").GetValue(o);
string path = "Configs:0.PredictPostDataSetting.Args:0.Name";
Console.WriteLine(ReflectUtil.ReflectOnPath(o, path));
var p = o.GetType().GetProperty("Configs");
//p.GetValue()
//var array = o.GetType().GetProperty("Configs").GetType().IsArray;
//var value = o.GetType().GetProperty("Configs").GetValue(o);
}
[TestMethod]
public void TestValue()
{
var a = new A();
a.Field = new B();
a.Field.SubField = 10;
string path = "Field.SubField";
Console.WriteLine(ReflectUtil.ReflectOnPath(a, path));
}
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