how to pass two parameters to call a stored procedure through c# mvc function

问题:

I can do it easily when I need to pass a single parameter as follows:

 public ProjectsModel GetProjectListBySearch(int projectId)     {         try         {             using (_context = new Exo_ADBEntities())             {                 var getdetailprojectlist = _context.Database.SqlQuery<ProjectsModel>("exec dbo.[GetProjectListByID] @ProjectID", new SqlParameter("@ProjectID", projectId)).FirstOrDefault();                 return getdetailprojectlist;             }          }         catch (Exception)         {              throw;         }     } 

This works nicely but when I try to do the same kind of thing but passing two parameters I find syntax error called invalid parameter Please help me to do this.Code when using two parameters are as follows

 public List<ProjectsModel> GetProjectDetailsBySectorAndSubSector(int sectorid,int subsectorid)     {         try         {             using (_context = new Exo_ADBEntities())             {                 var projectbysectorandsubsector = _context.Database.SqlQuery<ProjectsModel>("exec dbo.[GetProjectDetailsBySectorAndSubSector] @sectorId,@subSectorId", new SqlParameter("@sectorId, @subSectorId", sectorid, subsectorid)).ToList();                 return projectbysectorandsubsector;             }          }         catch (Exception)         {              throw;         }     } 

回答1:

The problem is that you're trying to pass several parameters as a single object.

If you look at the signature of Database.SqlQuery you'll see this:

public DbRawSqlQuery<TElement> SqlQuery<TElement>( string sql, params Object[] parameters ) 

This is too basic, but, when you see params in a C# function it means "any optional number of parameters". What this means is that you can pass as many parameters as needed. So, in your case, it's simply like this:

_context.Database.SqlQuery<ProjectsModel>(   "exec dbo.[GetProjectDetailsBySectorAndSubSector] @sectorId,@subSectorId",    new SqlParameter("@sectorId", sectorid),   new SqlParameter("@subSectorId", subsectorid) ).ToList() 

Note that when you find params Object[], you can also pass an array instead of several params, i.e.

_context.Database.SqlQuery<ProjectsModel>(   "exec dbo.[GetProjectDetailsBySectorAndSubSector] @sectorId,@subSectorId",    new Object[] { new SqlParameter("@sectorId", sectorid),                  new SqlParameter("@subSectorId", subsectorid)} ).ToList() 

Depending on how your code looks like this can be more convenient.

回答2:

There are a few options available to you.

Either pass the view model back to the controler, this is my personal preference.

Or setup a new route in global.asax that takes two parameters.

Or you can manually do the form post and pass the two parameters using jQuery inside the view

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