C# Attribute 簡單應用。

建立一個Attribute:

public class EntityMappingAttribute : Attribute    {        public string TableName{get;set;}        public string SortOrder { get; set; }    }

建一個類：

public class User    {        [EntityMapping(TableName = "test",SortOrder="5")]        public string name { get; set; }    }

得到attribute的值 ：

　　

User u = new User();
            u.name = "Andy";

            PropertyInfo pi = u.GetType().GetProperty("name");
var lst = pi.GetCustomAttributes(true);
foreach (var l in lst)
            {
                EntityMappingAttribute ema = l as EntityMappingAttribute;
                richTextBox1.Text += ema.TableName + "\n";
                richTextBox1.Text += ema.SortOrder + "\n";
            }