how to retrive scalar value using Linq To Stored Proc

Here I am going to explain scenario's

from the following scenarios i written two procedures. I don't prefer out parameter and
return keyword. So how linq will support to get scalar values from below stored procs.

scenerio 1 :

create procedure Getvalue
as
select count(*) from emp

scenerio 2 :
create procedure GetCountValues
as
select count(*) from emp
select count(*) from dept

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Hi kravindra;

Be aware that the following is using Linq to SQL and the database must be a MS SQL server, Linq to SQL does not support any other type of database.

Because you do not want to use the OUT parameter the results of the queries will return a result set and not an integer. It seems to me that the environment may have some issues with the stored procedure if the Count(*) does not have a column name. So give them names as follows:

scenario 1 :
create procedure Getvalue
as
select count(*) AS EmpCount from emp

scenario 2 :
create procedure GetCountValues
as
select count(*) AS EmpCount from emp
select count(*) AS DeptCount from dept

Scenario 1 :
YourDataContext db = new YourDataContext();

int? gv = db.Getvalue().FirstOrDefault().EmpCount;

Console.WriteLine(gv);

Scenario 2 :
This scenario is not as easy as the first one. The reason is that currently the DBML designer does not support the return of multiple result sets so you need to do a couple of extra things.

1. Right click on the design surface of the DBML designer and select "View Code"
2. Step one created a new file with a partial class of the data context, fill it as follows
      using System.Data.Linq.Mapping;
      using System.Data.Linq;
      using System.Reflection;

      namespace // Your namespace as stubbed out
      {
partial class YourDataContext
{
      // Define the return of the function
[Function(Name = "GetCountValues")]
[ResultType(typeof(emp))]
[ResultType(typeof(dept))]
public IMultipleResults GetCountValuesMR()
{
IExecuteResult result = this.ExecuteMethodCall(this,
      ((MethodInfo)(MethodInfo.GetCurrentMethod())));
return ((IMultipleResults)(result.ReturnValue));
}
}
}

3. Then in your code you can retrieve the two values as follows.
NorthwindDataContext db = new NorthwindDataContext();
int gcv1 = 0;
int gcv2 = 0;

// Execute the procedure and get the results
using (IMultipleResults results = db.GetCountValuesMR())
{
     gcv1 = results.GetResult<int>().ElementAt(0);
gcv2 = results.GetResult<int>().ElementAt(0);
}

Console.WriteLine("Employee Count = {0} Dept Count = {1}", gcv1, gcv2);

Fernando

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how to retrive scalar value using Linq To Stored Proc

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