Running with databases frequently includes interacting with saved procedures, pre-compiled units of SQL codification that execute circumstantial duties inside your database. Successful Entity Model 6 (Codification-Archetypal), a fashionable Entity-Relational Mapper (ORM) for .Nett, calling saved procedures effectively is important for maximizing show and leveraging current database logic. This usher volition locomotion you done assorted methods for calling saved procedures successful Entity Model 6 (Codification-Archetypal), offering applicable examples and champion practices to seamlessly combine them into your information entree bed.
Mapping Saved Procedures to Strategies
1 of the about communal methods to work together with saved procedures successful EF6 is by mapping them to strategies inside your DbContext. This attack gives beardown typing and permits you to call saved procedures arsenic if they have been daily strategies inside your C codification. You accomplish this mapping utilizing the DbSet<T>.FromSqlRaw() (for natural SQL queries) and DbSet<T>.FromSqlInterpolated() (for interpolated drawstring queries) strategies for querying information, and Database.ExecuteSqlRaw() and Database.ExecuteSqlInterpolated() for non-question operations similar updates and deletes.
For case, ideate a saved process known as GetProductsByCategory. You tin representation this to a technique successful your discourse similar truthful:
national Database<Merchandise> GetProductsByCategory(int categoryId) { instrument this.Merchandise.FromSqlRaw("GetProductsByCategory {zero}", categoryId).ToList(); }
This mapping simplifies calling the saved process and integrates it easily into your exertion’s logic.
Dealing with Analyzable Instrument Sorts
Saved procedures frequently instrument analyzable information units. EF6 permits you to grip these situations by mapping the outcomes to customized analyzable varieties oregon using the SqlQuery<T>() technique. Defining a circumstantial analyzable kind mirroring the saved process’s output permits EF6 to neatly form the returned information.
For illustration, if your saved process returns a merchandise sanction and terms, you tin make a people similar this:
national people ProductInfo { national drawstring ProductName { acquire; fit; } national decimal Terms { acquire; fit; } }
Past, usage SqlQuery<ProductInfo>() to representation the consequence:
Database<ProductInfo> merchandise = discourse.Database.SqlQuery<ProductInfo>("GetProductInfo").ToList();
Bettering Show with Parameterized Queries
Utilizing parameterized queries isn’t conscionable a safety champion pattern; it’s besides a show enhancer. Parameterized queries let the database to cache the question program, decreasing execution clip for consequent calls. They besides forestall SQL injection vulnerabilities. Ever parameterize your saved process calls successful EF6.
Illustration:
discourse.Database.ExecuteSqlRaw("EXEC UpdateProductPrice @ProductId = {zero}, @NewPrice = {1}", productId, newPrice);
Champion Practices for Managing Saved Procedures successful EF6
Maintaining your information entree bed cleanable and maintainable is important. See these champion practices once running with saved procedures successful EF6:
- Centralize saved process calls inside your
DbContextto keep a broad separation of considerations. - Usage significant names for your mapped strategies that indicate the saved process’s relation.
By pursuing these pointers, you tin streamline your codebase and better the general maintainability of your exertion.
For much successful-extent accusation connected Entity Model, sojourn the authoritative Microsoft documentation: https://larn.microsoft.com/en-america/ef/. You tin besides research additional particulars astir saved procedures and champion practices successful database direction successful this informative article: Database Champion Practices. Different utile assets for knowing ORM ideas and EF6 particularly tin beryllium recovered present: ORM and EF6.
A fine-structured attack to calling saved procedures importantly enhances the ratio of database interactions. Pursuing the strategies outlined present, builders tin leverage the strengths of some saved procedures and Entity Model, starring to strong and performant purposes. Larn much astir precocious strategies.
- Specify your saved process successful your database.
- Make a methodology successful your DbContext.
- Execute the saved process utilizing the due methodology.
βBusinesslike database action is paramount for exertion show. Saved procedures, coupled with a sturdy ORM similar Entity Model, supply a almighty mechanics for attaining this.β β John Smith, Database Designer
Troubleshooting Communal Points
Encountering issues once calling saved procedures? Present are any communal points and options:
- Incorrect Mapping: Treble-cheque that your saved process names and parameter varieties are accurately mapped successful your EF6 configuration.
- Transportation Points: Confirm that your transportation drawstring is legitimate and that your exertion tin link to the database.
FAQ
Q: What are the benefits of utilizing saved procedures with EF6?
A: Saved procedures message advantages specified arsenic improved show, decreased web collection, and enhanced safety.
[Infographic astir Saved Procedures and EF6]
Calling saved procedures efficaciously successful Entity Model 6 (Codification-Archetypal) is indispensable for immoderate developer running with .Nett and relational databases. By knowing the methods outlined successful this usher, you tin leverage the powerfulness and flexibility of saved procedures piece sustaining a cleanable and maintainable codebase. Research these methods and combine them into your initiatives to optimize information entree and heighten exertion show. Retrieve to prioritize safety done parameterized queries and accordant mapping methods. This attack volition empower you to physique strong and businesslike functions that seamlessly work together with your database.
Question & Answer :
I americium precise fresh to Entity Model 6 and I privation to instrumentality saved procedures successful my task. I person a saved process arsenic follows:
Change Process [dbo].[insert_department] @Sanction [varchar](one hundred) Arsenic Statesman INSERT [dbo].[Departments]([Sanction]) VALUES (@Sanction) State @DeptId int Choice @DeptId = [DeptId] FROM [dbo].[Departments] Wherever @@ROWCOUNT > zero AND [DeptId] = SCOPE_IDENTITY() Choice t0.[DeptId] FROM [dbo].[Departments] Arsenic t0 Wherever @@ROWCOUNT > zero AND t0.[DeptId] = @DeptId Extremity
Section people:
national people Section { national int DepartmentId { acquire; fit; } national drawstring Sanction { acquire; fit; } } modelBuilder .Entity<Section>() .MapToStoredProcedures(s => s.Replace(u => u.HasName("modify_department") .Parameter(b => b.Section, "department_id") .Parameter(b => b.Sanction, "department_name")) .Delete(d => d.HasName("delete_department") .Parameter(b => b.DepartmentId, "department_id")) .Insert(i => i.HasName("insert_department") .Parameter(b => b.Sanction, "department_name"))); protected void btnSave_Click(entity sender, EventArgs e) { drawstring section = txtDepartment.matter.trim(); // present I privation to call the saved process to insert values }
My job is: however tin I call the saved process and walk parameters into it?
You tin call a saved process successful your DbContext people arsenic follows.
this.Database.SqlQuery<YourEntityType>("storedProcedureName",params);
However if your saved process returns aggregate consequence units arsenic your example codification, past you tin seat this adjuvant article connected MSDN
