Combat. Net data Access Layer-21

Access | data (2) Entityconvert

This dongdong is imitate the product of System.Convert, just don't feel how, use up really a little reluctant to do (the code 1 in the beginning of this article has used this utility)!

Don't believe it, and look at the following code (just two cases J):



Code 16: I change, I change, I change!

public static Class Entityconvert

{

public static IList ToList (DbDataReader rdr, Type entity)

{

ArrayList list = new ArrayList ();

using (RDR)

{

while (RDR. Read ())

{

Object obj = Toobject (RDR, entity, false);

if (obj!= null)

List. ADD (obj);

}

}

return list;

}



public static Object Toobject (DbDataReader rdr,

Type entity, BOOL Bneedread)

{

Object obj = null;

if (!bneedread | | rdr. Read ())

{

Creating a Data Entity object

obj = Activator.CreateInstance (entity);



Set field data for data entity object

fieldinfo[] fields = entity. GetFields (

BindingFlags.Instance | BindingFlags.Public);



foreach (FieldInfo field in fields)

{

String fieldName = field. Name;

Object fieldvalue = Rdr[fieldname];



if (Fieldvalue = = System.DBNull.Value)

Field. SetValue (obj, null);

Else

Field. SetValue (obj, fieldvalue);

}



if (Bneedread &&!rdr. Read ())

Rdr. Close ();

}

return obj;

}

}



















































































































































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