利用反射实现两个对象赋值

利用反射实现对象转字符串

private string SpellEntity<T>(T entity)
{
string result = "";
Type Keytype = typeof(T);
PropertyInfo[] piKey = Keytype.GetProperties();//获取属性集合
foreach (PropertyInfo p in piKey)
{
result += p.Name + ":" + p.GetValue(entity, null) + ",";
}
return result.Trim(',');
}

在通过webservice或者wcf应用中经常会用到实体间转换的问题，当字段很多时进行赋值很麻烦，通过反射可以实现快速自动化赋值：

学生实体类：

public class Student
{
public string Name { set; get; }
public string Sex { set; get; }
public int Age { set; get; }
}

老师实体类：

public class Teacher
{
public string Name { set; get; }
public string Sex { set; get; }
public int Age { set; get; }
}

简单实现：

Student student = new Student();
student.Name = "EP";
student.Sex = "Male";
student.Age = 30;

Teacher teacher = new Teacher();

Type t = typeof(Student);
PropertyInfo[] pi = t.GetProperties();
Console.WriteLine(typeof(Student));
foreach (PropertyInfo p in pi)
{

Console.WriteLine(p.Name + "--" + p.PropertyType + "--" + p.GetValue(student, null));
PropertyInfo pii = (typeof(Teacher)).GetProperty(p.Name);
pii.SetValue(teacher, p.GetValue(student,null), null);
}
Console.ReadLine();

t = typeof(Teacher);
pi = t.GetProperties();
Console.WriteLine(typeof(Teacher));
foreach (PropertyInfo p in pi)
{
Console.WriteLine(p.Name + "--" + p.PropertyType + "--" + p.GetValue(teacher, null));
}
Console.ReadLine();

此方法可以写成一个通用类，利用泛型操作实现不同实体转换。