Entity Framework 4.1
:Entity Framework 4.1
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:Entity Framework 4.1. /
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:1416www.pendarepars.com
:66572335- :66926578 :09122452348 [email protected]
1 ENTITY FRAMEWORK........................................................3
Entity Framework...................................................................................4
!.....................................................................6
Entity Framework..............................................................................8
...................................................................................................9
.......................................................................................9
..............................................................................................10
...............................................................................................13
Entity Framework 4.0.......................................................................15
POCO.........................................................................................16
Model First.........................................................................16
Deffered Loading.......................................................................16
LINQ to Entities...............................................16
......................................................................17
Complex................................................................................17
.NET.................................................................17
Model Browser.......................................................18
..............................................................................18
2 ENTITY DATA MODEL.....................................................................21
EDM..................................................................................................21
Database First.........................................................................................22
.......................................................26
Model First.............................................................................................28
..................................................................................................34
.........................................................................................38
Code Only..............................................................................................39
3 ENTITY DATA MODEL................................................43
EDM Designer................................................................................................43
Designer..........................................................................................43
Model Browser................................................................................45
Mapping Details..............................................................................46
........................................................................................................47
Scalar Properties.........................................................................................48
TypeComplex............................................................................................49
Complex..................................................................................49
Complex...............................................................................49
)Foreign Keys ()Associations(...............................54
Navigation Properties.................................................................................55
Mapping Details..................................................................................56
EDM...........................................................................................57
EDM......................................................................................59
SSDL.................................................................................................59
EntityType......................................................................................60
Association.....................................................................................61
CSDL.................................................................................................62
EntityType.......................................................................................63
Association.....................................................................................65
MSL...................................................................................................65
EDM.............................................................................67
4 EDM...................................................................................73
Entity Framework.............................................................................73
Syntax...........................................................................74
Query Syntax..............................................................................................74
Context........................................................................................................78
Method Syntax............................................................................................79
.............................................................................81
LINQ to Entities.........................................................................................81
Entity SQL..................................................................................................88
EntityClient.................................................................................................90
EntityConnection...........................................................................91
EntityCommand.............................................................................93
)Immediate ()Deferred (...................93
)Deferred(...................................................................................94
)Immediate(................................................................................96
5 ................................................................................99
ObjectContext.................................................................................................99
ObjectStateEntry........................................................................................100
................................................................................101
SaveChanges.....................................................105
............................................................................................108
......................................................................................111
..........................................................................113
...............................................................................................116
6 STORED PROCEDURE.................................................................119
Stored ProcedureEDM..........................................................................119
Model Browser...................................................................................125
EF................................................................................126
T-SQLEFCUD..................................................127
)SP (...........................................................................................132
.........................................................................................132
..................................................................................................134
..................................................................................................135
.............................................................................................136
)SP (......................................................................137
7 ..........................................................................141
...............................................................................................................141
.......................................................................................142
EF 3.5.......................................................................................143
EF 4.0...........................................................................................145
Windows Forms Application......................................146
.......................................................................................148
EDM Designer.....................................................................149
...................................................................150
...........................150
..............................................................152
.......................154
..................................................................................................155
8 T4....................................................................................159
T4......................................................................................159
T4Visual Studio 2008.........................................159
T4...................................................................................160
T4................................................................................................161
.........................................................................................165
:................................................................................167
:.........................................168
:SQL Server.........................170
T4EF.............................................................................................172
T4EF..........................................................178
9 MODEL FIRST........................................................................181
ModelFirst................................................................................181
......................................................................................182
Model First...........................................................184
Navigation Property........................................................186
..................................................................................................188
..................................................................................188
Complex.............................................................................195
DDL.............................................................................198
10 CODE ONLY.........................................................................205
.......................................................................................................206
.......................................................................209
................................................................................................210
.........................................................................211
..........................................................................................................214
................................................................217
DataAnnotation..........................................................218
Entity Framework Power Tools...........................................................228
11 WCF DATA SERVICES.......................233
WCF Data Service...................................................235
WCF Data Service....................................................241
WCF Data Service............................................249
............................................................................................250
.............................................................................................254
-
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.http://msftdbprodsamples.codeplex.com.
:
1.
2."yes, we have rows"
/ Entity Framework 5
try
{
string connectionString = Class1.GetConnectionString();
using (SqlConnection conn = new SqlConnection(connectionString))
{
conn.Open();
using (SqlCommand cmd = new SqlCommand())
{
cmd.Connection = conn;
cmd.CommandText = "SELECT FirstName, MidName, LastName
FROM Person.Contact WHERE ContactID = @ContactID";
SqlParameter param = new SqlParameter("@ContactID",
SqlDbType.Int, 50, "ContactID");
param.Value = 8;
cmd.Parameters.Add(param);
SqlDataReader rdr = cmd.ExecuteReader();
while (rdr.Read())
{
Console.WriteLine(String.Format("{0}, {1}",
rdr[0], rdr[1]));
}
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
Click
MidName
.MiddleName
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.
4.DFD (Data Flow Diagram) :
.
/ Entity Framework 7
.
ERM
UML .UML
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ERM
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1.NHibernate :HibernateJava.NET
.
2.SPRING.Net :Spring
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3.
Entity Framework 10
using (SqlConnection conn = new SqlConnection(@"Data
Source=(local);Initial Catalog=AdventureWorks;UID=sa;PWD=pwd"))
{
conn.Open();
using (SqlCommand cmd = new SqlCommand())
{
cmd.Connection = conn;
cmd.CommandType = CommandType.Text;
cmd.CommandText = "SELECT FirstName, MiddleName, LastName
FROM Person.Contact WHERE LastName = @LastName";
cmd.Parameters.Add(new SqlParameter("@LastName",
System.Data.SqlDbType.NVarChar)).Value = "Behrouz";
using (SqlDataReader rdr = cmd.ExecuteReader())
{
if (rdr.HasRows)
{
rdr.Read();
//
}
}
}
}
)
( ..
Entity Framework .
( )
) (Entity Framework.
/ Entity Framework 11
Entity Data ModelEDM .EDM
Entity Framework
: .EDM
ERM .EDM.Entity
Framework
.1 -1AdventureWorks
.3 :ContactEmployeeAdditionalContactInfo .
Contact .Employee
.AdditionalContactInfo
.ContactID.
1-1 :
.
.
:
SELECT c.FirstName, c.LastName, e.Title, e.HireDate, aci.CellPhone,
aci.EmailAddress
FROM Contact c
INNER JOIN AdditionalContactInfo aci ON c.ContactID = aci.ContactID
INNER JOIN Employee e ON c.ContactID = e.ContactID
Entity Framework 12
EDMEntity Framework
.EDM
.
Entity Framework
BLL.
EDMEntity Framework""
2-1.
2-1 :
LINQ:
from c in Contact.TypeOf<Employee> select c;
Entity Framework
.2EDM
.
Entity FrameworkEntity
Data ModelEDM.
/ Entity Framework 13
Entity Framework
"Entity" .Entity""
."""" .Entity
Framework
Entity .2-1
Entity .4
Entity FrameworkEDM
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: .
.
PropertyProperty .
PropertyPhoneint.
PropertyEntityPropertyEntity .
Entity.
Entity .
EntityIdentity.
Property)Method (
.
: .
.
.
(Primary Key)
.
.
:
Entity Framework 14
PropertyComplex.Property
Complex.
.
.
.
EDM .
.2-1 .
Entity Framework
.
EDM
Designer.
3-1 :
LINQ
.3 -1
Entity Framework .EDMDesigner
.3 -1
/ Entity Framework 15
Navigation Property .
EmployeeContact .
EmployeeContactNavigation PropertyContact
Employee
Employee .Navigation Property
.
Entity Framework 4.0
Entity
Framework 4.0 .Entity
Framework3.5.
POCO)Plain Old CLR Objects(
Model First
Navigation PropertyDeffered Loading
LINQ to Entities .
.Category
Categories
Complex
.NETEntity Framework
Model Browser
.
.
Entity Framework 16
POCO
.Entity Framework
.POCO.
Model First
EDM Designer
.
Deffered Loading
Deffered LoadingLazy Loading
Navigation Property
.
Contact
Contact
Connection
. .
LINQ to Entities
Entity Framework .
Stored ProcedureUser Defined Function.
SqlFunctionsEntityFunctionsEntity Framework 4.0
.AttributeEdmFunctionAttribute
/ Entity Framework 17
Stored ProcedureUser Defined Function
.5.
.
CategoryCategories .
Entity Framework-
""
Categories .Entity Framrework
Navigation Property
Entity Framework 4.0
.
Complex
ComplexEntity Framework 4.0 .
ComplexProperty
Property .Complex
.Complex
AddressPropertyStreet1Street2Property
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Model Browser
Model Browser
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Property
.2.
Entity Framework
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Entity FrameworkProvider .Provider
.
1.EntityClientEntity Framework
EDM .Provider
SqlClientProviderSQL Server
SQL Server.
2.SQL Provider.NETSQL Server
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Entity FrameworkADO.NET Data Provider
.Provider
ADO.NET Data Provider .
Provider
Entity Framework:
Oracle
MySql
/ Entity Framework 19
PostgreSQL
SQL Anywhere
DB2
Informix
U2
Ingres
Progress
Firebird
Synergy
Virtuoso
Entity Framwork.
:
http://msdn.microsoft.com/en-us/data/dd363565.aspx
Provider .Connection StringProvider
Provider .SQL
LINQ to EntitiesEntity SQLCRUD
SQL
Provider . .
!
CRUDCreateRetrieveUpdateDelete
( ).
SQL Server 2008SqlClientProvider
.ProviderSQL Server)200020052008 (
.SQL Server Compact Edition.
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