When calling stored procedure, .hasRows keeps staying "false" - asp.net

Question

I have a stored procedure which I am calling which will return data from a table.
But when I try to populate an .aspx with the data it skips my method from doing it because my method is based on whether a reader detects rows.
Here is my method:
private void editExhibit(int expenseID)//new
{
saveExhibitBtn.Text = "Update Exhibit";
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["OSCIDConnectionString"].ToString());
SqlCommand cmd = new SqlCommand("p_CaseFiles_Exhibits_RetrieveExhibitDetails", conn);
cmd.CommandType = CommandType.StoredProcedure;
//cmd.Parameters.AddWithValue("#ExhibitID", expenseID);
cmd.Parameters.Add(new SqlParameter("#ExhibitID", SqlDbType.Int));
cmd.Parameters["#ExhibitID"].Value = expenseID;
bool hasAttachments = false;
string investigatorID = "";
//bool alreadyInvoiced = false;
bool isExpenseOwner = false;
string fileID = "-1";
try
{
conn.Open();
var reader = cmd.ExecuteReader();
if (reader.HasRows)//////////////////////craps out here bcause hasRows is false....
{
reader.Read();
fileID = reader["FileID"].ToString();
ddlCaseFiles.SelectedValue = fileID;
ddlCaseFiles.Enabled = false;
// retrieve exhibit details here
hasAttachments = (bool)reader["HasAttachments"];
investigatorID = reader["InvestigatorID"].ToString();
if (Session["InvestigatorID"].ToString() == investigatorID)
{
isExpenseOwner = true;
}
txtDateReceived.Value = reader["SeizeDate"].ToString();
ddlReceivedBy.SelectedValue = reader["SeizedByInvestigatorID"].ToString();
txtTimeReceived.Value = reader["SeizeTime"].ToString();
txtWhyHowReceived.Value = reader["SeizeAuthority"].ToString();
txtReceivedLocation.Value = reader["SeizeLocation"].ToString();
txtOurItemNum.Value = reader["NewExhibitOutItemNumber"].ToString();////////////
txtTheirItemNum.Value = reader["ClientItemNum"].ToString();
txtBagNum.Value = reader["BagNumber"].ToString();
txtBoxNum.Value = reader["BoxNumber"].ToString();
txtComment.Value = reader["ExhibitDecriptionPlainText"].ToString();
}
}
catch (SqlException ex)
{
ErrorLogger.Log(ex.Number, "NewExhibit.aspx - editExhibit - Retrieve Details", ex.Message);
}
Here is my stored procedure:
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER procedure [dbo].[p_CaseFiles_Exhibits_RetrieveExhibitDetails]
#FilterField nvarchar(max)=null
, #FilterQuery nvarchar(max)=null
, #SortName nvarchar(max)='SeizeDate, SeizeTime '
, #SortOrder nvarchar(max)='desc'
, #ExhibitID int
as
SET CONCAT_NULL_YIELDS_NULL OFF
declare #Command nvarchar(max)
Select #Command = 'select E.ExhibitID,convert(nvarchar,SeizeDate,111) as ''SeizeDate'',SeizeTime,ExhDesc,E.InvestigatorID as ''EnteredBy''
,E.SeizedByInvestigatoID as ''SeizedBy'',SBI.ActiveInvestigator, SBI.FName+'' '' + SBI.LName as ''SeizedByName'', E.FileID,[FileName]
,Investigators.FName,Investigators.LName,SzAuthority,Location,ItemID,SubItemID1,SubItemID2,SubItemID3,PageSerial,ClientItemNum,Privileged
,Private,E.HasAttachments,ItemEntryGradeID,BagNumber,BoxNumber,PL.PropertyId,P.PropertyTypeID,P.PropertyMakeID,P.PropertyModelID,SerialNumber,ColorID
,cast(ItemID as varchar)+''-''+cast(SubItemID1 as varchar)+''-''+cast(SubItemID2 as varchar)+''-''+cast(SubItemID3 as varchar) as ''ItemNumber'',StoredLocally
from CaseFileExhibits E
join Investigators on E.InvestigatorID = Investigators.InvestigatorID
join Investigators SBI on SBI.InvestigatorID=E.SeizedByInvestigatoID
join CaseFiles on E.FileID = CaseFiles.FileID
left join CaseFileExhibitPropertyLink PL on E.ExhibitID=PL.ExhibitID
left join Element09a_Properties P on P.PropertyID=PL.PropertyId
left join ElementPropertyTypes PT on PT.PropertyTypeID=P.PropertyTypeID
left join ElementPropertyMakes PM on PM.PropertyMakeID=P.PropertyMakeID
left join ElementPropertyModels PMD on PMD.PropertyModelID=P.PropertyModelID
where E.ExhibitID='+convert(nvarchar,#ExhibitID);
if(#FilterQuery is not null)
begin
select #Command+=' and '+#FilterField+ ' like '''+#FilterQuery+''' ';
end
select #Command+=' order by '+#SortName+' '+#SortOrder
So according to the stored procedure I only need to pass in the exhibitID, which I did.

Answer 1

Your Stored procedure looks incomplete. You probably need to add
exec sp_executesql #command;
At the end to get it to return your rows.
info about sp_executesql can be found at http://msdn.microsoft.com/en-us/library/ms188001.aspx