Sunday, November 28, 2010

LINQ - Insert,Update,Delete with LINQ to SQL using Stored Procedure

In this article i will show you how to insert,update and delete data with LINQ to SQL by using Stored procedure

Step 1
Create a student table in database,it is look like this














Step 2
Create a Insert,Update and Delete Stored procedure in Database, it is look like this

Insert

CREATE PROCEDURE dbo.InsertStudent
(
    @FirstName nvarchar(50),
    @LastName nvarchar(50),
    
    @Status nvarchar(100) OUTPUT
)
AS

    BEGIN
    
        BEGIN TRY
            
            INSERT INTO Student
            (FirstName,LastName)
            VALUES
            (@FirstName,@LastName) 
            
            SET @Status='Data Insert Sucessfully' 
            
        END TRY
        
        BEGIN CATCH
            SET @Status='Data Insert UnSucessfully'
        END CATCH
    
    END 

GO


Update
CREATE PROCEDURE dbo.UpdateStudent
(
    @StudentID Numeric(18,0),
    @FirstName nvarchar(50),
    @LastName nvarchar(50),
    
    @Status nvarchar(100) OUTPUT
)
AS

        BEGIN 
        
            BEGIN TRY
            
                UPDATE Student 
                    SET FirstName=@FirstName,
                          LastName=@LastName
                         
                        WHERE StudentID=@StudentID;
                        
                
                SET @Status='Data Update Sucessfully'        
                
            
            END TRY
            
            BEGIN CATCH
            
                SET @Status='Data Update UnSucessfully'
            
            END CATCH
        
        END 

GO

Delete
CREATE PROCEDURE dbo.DeleteStudent
(

    @StudentID Numeric(18,0),
    
    @Status nvarchar(100) OUTPUT
    
)
AS

    BEGIN
    
        BEGIN TRY
        
            DELETE Student 
                WHERE Student.StudentID=@StudentID
                
                SET @Status='Data Delete Sucessfully'
        
        END TRY
        BEGIN CATCH
                SET @Status='Data Delete UnSucessfully' 
        END CATCH
    
    END 

GO

Step 3
Create a console application and give the solution name as ConLinqToSql_StoredProc.

Step 4
Add a ConnectionString in app.config file,it is look like this

<connectionStrings>
        <add name="ConStr"
            connectionString="Data Source=SHREE\SHREE;Initial Catalog=ABC;Integrated Security=True"
            providerName="System.Data.SqlClient" />
    </connectionStrings>

Step 5
Create a new folder inside the solution and give the folder name as ORD,it is look like this

 















Step 6
Create a Student Model Class inside the ORD folder,it is look like this

 public class StudentModel
    {
        #region Property

        public long StudnetID
        {
            get;
            set;
        }

        public String FirstName
        {
            get;
            set;
        }

        public String LastName
        {
            get;
            set;
        }

        #endregion
    }

Step 7
Add a Linq to Sql class,Select the ORD folder,right click on Add new Item,select LINQ to SQL classes from installed Visual Studio templates and name it StudentDC and click on add button,it is look like this



















Click on image for better view

Step 8
Open a O/R Designer by double click on StudentDC.dbml,it is look like this



















Click on image for better view

















Click on image for better view

Visual stdio provides an object-relational mapping designer,called the O/R Designer which allows you to visually design the object to database mapping.

Step 9
To map stored procedure in DataContext class.go to the server explorer,select a database,go to the Stored Procedure and select InsertStudent,UpdateStudent and DeleteStudent stored procedures ,it is look like this


























Click on image for better view

Drag and drop all three stored procedures from Server explorer onto the design surface of the O/R Designer,it is look like this


















Click on image for better view


Step 10
Create a Student static class in a ORD folder for insert,update and delete data to database,it is look like this

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConLinqToSql_StoredProc.ORD
{
    public static class Student
    {
        #region Methods

        /// <summary>
        /// Insert Student Data
        /// </summary>
        /// <param name="StudentObj">Specify the Student Object</param>
        /// <returns>String</returns>
        public static String InsertStudent(ORD.StudentModel StudentObj)
        {
            String Status = String.Empty; 
            try
            {
                // Create a Student DataContext Object and specify the connectionstring in datacontext constructor.
                ORD.StudentDC DC = new StudentDC(System.Configuration.ConfigurationManager.ConnectionStrings["ConStr"].ConnectionString.Trim());

                // Call maped Insert Stored Procedure
                DC.InsertStudent(StudentObj.FirstName, StudentObj.LastName, ref Status);

                return Status; 

            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);  
            }
        }

        /// <summary>
        /// Update Student Data
        /// </summary>
        /// <param name="StudentObj">Specify the Student Object</param>
        /// <returns>String</returns>
        public static String UpdateStudent(ORD.StudentModel StudentObj)
        {
            String Status = String.Empty;

            try
            {
                // Create a Student DataContext Object and specify the connectionstring in datacontext constructor.
                ORD.StudentDC DC = new StudentDC(System.Configuration.ConfigurationManager.ConnectionStrings["ConStr"].ConnectionString.Trim());

                // Call maped Update Stored Procedure
                DC.UpdateStudent(StudentObj.StudnetID, StudentObj.FirstName, StudentObj.LastName, ref Status);

                return Status; 
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);  
            }
        }

        /// <summary>
        ///  Delete Student Data
        /// </summary>
        /// <param name="StudentObj">Specify the Student Object</param>
        /// <returns>String</returns>
        public static String DeleteStudent(ORD.StudentModel StudentObj)
        {
            String Status = String.Empty;

            try
            {
                // Create a Student DataContext Object and specify the connectionstring in datacontext constructor.
                ORD.StudentDC DC = new StudentDC(System.Configuration.ConfigurationManager.ConnectionStrings["ConStr"].ConnectionString.Trim());

                // Call maped Delete Stored Procedure
                DC.DeleteStudent(StudentObj.StudnetID, ref Status);

                return Status; 
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);  
            }
        }


        #endregion
    }
}

Step 11
Call a methods in Main function,it is look like this


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConLinqToSql_StoredProc
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                // Create a Object of StudentModel Class
                ORD.StudentModel StudentModelObj = new ORD.StudentModel();
                
                
                //#region Insert Section


                //StudentModelObj.FirstName = "Kishor";
                //StudentModelObj.LastName = "Naik";

                //System.Console.WriteLine(ORD.Student.InsertStudent(StudentModelObj));       

                //#endregion



                #region Update Section

                //StudentModelObj.StudnetID = 1;
                //StudentModelObj.FirstName = "Yogesh";
                //StudentModelObj.LastName = "Naik";

                //System.Console.WriteLine(ORD.Student.UpdateStudent(StudentModelObj));   

                #endregion


                #region Delete Section

                StudentModelObj.StudnetID = 1;

                System.Console.WriteLine(ORD.Student.DeleteStudent(StudentModelObj));   

                #endregion


            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);  
            }
        }
    }
}

Run the Project.

Download
Download Source Code

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