Getting error 'Insight.Database.FastExpando' does not contain a definition for 'Set1' from QueryResults<>()

[gshultz21]

The following code is giving the above error, and I cannot figure out why:

var x = _sqlConn.Connection().QueryResults<Results>("MyDb.dbo.get_records", new { id = theId });
int retVal = x.Outputs.Return_Value;

if (retVal == 0) // ...meaning result set was also returned...fine to this point.
{
var list = x.Outputs.Set1; // exception thrown here with above error
var temp = list.FirstOrDefault();

I have been using other features of Insight.Database for a number of years, but have not had to retrieve a SQL RETURN value at the same time as a recordset. The SQL itself works correctly in SSMS, returning a result set and the RETURN value of 0, as expected. This is happening in VS2019, .NET 4 and .NET 4.5.2; Insight.Database 5.2.7 and 5.2.8, and SQL Server 2016.

I got this code from the following page: https://github.com/jonwagner/Insight.Database/wiki/Specifying-Result-Structures where it shows this:

var results = connection.QueryResults<Beer, Glass>("GetAllBeersAndAllGlasses");
IList<Beer> beers = results.Set1;

which I combined with the following code from here: https://github.com/jonwagner/Insight.Database/wiki/Output-Parameters

var results = connection.QueryResults<Results>("MyProc", inputParameters);
var p = results.Outputs.p;

That part works. It's accessing .Set1 that is failing. Over at SO, Jon suggested that I try this:

var x = _sqlConn.Connection().QueryResults<MyType>("MyDb.dbo.get_records", new { id = theId });

but that fails to compile, with the following error:

The type 'MyType' cannot be used as type parameter 'T' in the generic type or method 'DBConnectionExtensions.QueryResults(IDbConnection, string, object, CommandType, CommandBehavior, int?, IDbTransaction, object)'. There is no implicit reference conversion from 'MyType' to 'Insight.Database.Results'.

[Jaxel Rojas]

Here is a working sample, using the same QueryResults Api:

Given this Sql

CREATE OR ALTER PROC TestSelectReturn 
AS
BEGIN
	SET NOCOUNT ON;
	SET XACT_ABORT ON;

	SELECT 1 Id, 'Name' Name

	RETURN 2;
END
GO

This code works as intended:

void Main()
{
	var connection = new SqlConnection(MyExtensions.SQLConnectionString);
	SqlInsightDbProvider.RegisterProvider();
	
	var result = connection.QueryResults<Sample, Return>("TestSelectReturn");
	
	if (result.Outputs.Return_Value == 2)
	{
		Console.WriteLine($"Returned value is: {result.Outputs.Return_Value}");
		
		Console.WriteLine(result.Set1.FirstOrDefault().Id);
		Console.WriteLine(result.Set1.FirstOrDefault().Name);
	}
	
}

public class Sample
{ 
	public int Id { get; set; }
	public string Name { get; set; }
}

public class Return
{ 
	public int Return_Value { get; set; }
}

Edit: forgot to add the Results<T> option which should also work:

	var result2 = connection.QueryResults<Results<Sample>>("TestSelectReturn");
	
	if (result2.Outputs.Return_Value == 2)
	{
		Console.WriteLine($"Returned value is: {result2.Outputs.Return_Value}");
		
		Console.WriteLine(result2.Set1.FirstOrDefault().Id);
		Console.WriteLine(result2.Set1.FirstOrDefault().Name);
	}

I would also suggest you take a look at the following tests:

Insight.Database/Insight.Tests/OutputParameterTests.cs

Lines 235 to 257 in 3caebb6

 [Test] 
 public void ExecuteProcShouldReturnValue() 
 { 
 	var output = new ReturnValue(); 
 	Connection().Execute("ReturnAValue", outputParameters: output); 
 	Assert.AreEqual(11, output.Return_Value); 
 } 
  
 [Test] 
 public void ReturnValueCanFillInADynamic() 
 { 
 	dynamic output = new FastExpando(); 
 	Connection().Execute("ReturnAValue", outputParameters: (object)output); 
 	Assert.AreEqual(11, output["Return_Value"]); 
 } 
  
 [Test] 
 public void ReturnValueCanFillQueryResults() 
 { 
 	var results = Connection().Query("ReturnAValue", null, Query.ReturnsResults<Results>()); 
 	Assert.AreEqual(11, results.Outputs["Return_Value"]); 
 } 
 #endregion 

Insight.Database/Insight.Tests/OutputParameterTests.cs

Lines 190 to 196 in 3caebb6

 public void TestQueryResults() 
 { 
 	var result = Connection().QueryResults<Results<int>>("TestOutputParameters", new { p = 5 }); 
  
 	Assert.IsNotNull(result.Outputs); 
 	Assert.AreEqual(9, result.Outputs["p"]); 
 } 

[gshultz21]

I will check those out. Thank you very much for the help.