如何使用反射来获取/设置属性值？

Question

I am trying to use reflection to cycle through all of the properties in a given class and perform a conversion on all DateTime properties it finds.

However I am getting an error {"Object does not match target type."}

How do I get the value of the given property and set its value?

My code:

var properties = myObj.GetType().GetProperties();
foreach (var prop in properties) {
    if (prop.PropertyType == typeof(DateTime) || prop.PropertyType == typeof(DateTime?)) {
        DateTime? test = prop.GetValue(this);
        // Do conversion on test
        // Do something like prop.SetValue(??) with the new value 
    }
}

Answer 1

The problem appears to be the parameter that you are passing to GetValue - it needs to be myObj , not this .

In addition, you need to cast the result of the call to DateTime? on assignment:

DateTime? test = (DateTime?)prop.GetValue(this);