Example of a three-layer structure ASP.net program that automatically displays entity classes on the page (C #)

Asp.net| Program | show | page Here we assume a scenario where there is an entity class student in a three-tier BS system (asp.net), including name,age two fields. Now need to put
The data for this entity class is displayed on a studentinfo.aspx page with two text boxes in studentinfo.aspx: Studentname (used to show Student.name)
Studentage (used to display student.age).
The following steps will automatically display the student entity in the Studentinfo by reflection and attribute:
1, first, you need to implement an attribute that indicates the corresponding relationship between the field in the entity class and the controls in the interface.
Using System;
Using System.Reflection
public class Controlidattribute:attribute
{
public string ID;

Public Controlidattribute (String id)
{
Id=id;
}
}
2, and then you need to bind the field to the ControlID in the entity class
Using System;
public class Student
{
[ControlID ("Studentname")]
public string name;
[ControlID ("Studentage")]
public int age;

Public Class1 () {}
}
3, implement a tool class to complete the work of the entity class display to the interface
public class Pageutility
{
Traversing pages, binding data
public void Binddata (Control control,object entity)
{
Object Temp=null;
foreach (Control C-control. Controls)
{
Temp=getvaluefromentity (c.clientid,entity);

if (c is TextBox)
{
((TextBox) c). Text=temp. ToString ();
}
if (C.hascontrols ())
{
Binddata (c,entity);
}
}
}

Gets the value of the Controlidattribute as ControlID
Private Object Getvaluefromentity (String controlid,object entity)
{
Type T = entity. GetType ();
foreach (FieldInfo f in T.getfields ())
{
foreach (Attribute attr in Attribute.GetCustomAttributes (f))
{
if (attr is Controlidattribute && ((controlidattribute) attr). _id = = ControlID)
{
return F.getvalue (entity);
}
}
}
return null;
}
}