Trouble getting date value - asp.net

Question

I am modifying a webpage. Webpage is using visual basic and my database is a SQL database.
The webpage gives me the total Sick, Comp, and Vacation time off. Right now, I get the logon name of whoever's logged onto the computer, and I look up the EmployeeID in a tblEmployees so I can search tblTimeAvailable by the EmployeeID, and then add up the different times.
I want to also get the StartDate from tblEmployees so I can also search by anniversary date (after I calculate it from the Start Date). I'm getting an error "Value of type 'Integer' cannot be converted to 'Date' on the rvsd=command2.ExecuteNonQuery line. Here's my code:
Dim rve As Object
Dim rvsd As Date
Dim dt As Date = Today
'Get network login name (name only)
split = windowsLoginName.Split("\".ToCharArray)
vname = split(1)
'Get employeeid from table that matches login name
Dim Connection As String = "Data Source=WillSQL\ict2;Initial Catalog=timesql_testing;Integrated Security=SSPI"
Using con As New SqlConnection(Connection)
Dim sqlemp As String = "SELECT EmployeeID FROM tblEmployees where login = #loginname"
Dim sqlstdt As String = "SELECT StartDate FROM tblEmployees where login = #loginname"
Dim command As New SqlCommand(sqlemp, con)
Dim command2 As New SqlCommand(sqlstdt, con)
con.Open()
command.Parameters.Add(New SqlParameter With {.ParameterName = "#loginname", .SqlDbType = SqlDbType.NVarChar, .Value = vname})
command2.Parameters.Add(New SqlParameter With {.ParameterName = "#loginname", .SqlDbType = SqlDbType.NVarChar, .Value = vname})
rve = command.ExecuteScalar
rvsd = command2.ExecuteNonQuery
End Using
Dim theDateThisYear As Date
theDateThisYear = DateSerial(Year(Now), Month(rvsd), Day(rvsd))
If theDateThisYear < Now() Then
theDateThisYear = DateAdd("yyyy", 1, theDateThisYear)
End If
Dim NextAnniversary As Date = theDateThisYear
MsgBox(NextAnniversary)
'Get Sick Time - DOES NOT INCLUDE CHECKING TO MAKE SURE LESS THAN ANNIV DATE YET
Using con As New SqlConnection(Connection)
Dim sqls1 As String = "Select SUM(NoofHours) as Total from tblTimeAvailable where workcode = 1 and EmployeeID = #emp"
Dim command As New SqlCommand(sqls1, con)
con.Open()
command.Parameters.Add(New SqlParameter With {.ParameterName = "#emp", .SqlDbType = SqlDbType.NVarChar, .Value = rve})
rvsa = command.ExecuteScalar
End Using
Thanks in advance for any help you can give me!

Answer 1

Assuming that the column [StartDate] in the database has a type of DateTime then all you need to do is
rvsd = CDate(command2.ExecuteScalar)
Although you could have retrieved both values with one query:
SELECT [EmployeeID], [StartDate] FROM [tblEmployees] where [login] = #loginname"
and so
Dim rve As String
Dim rvsd As Date
Dim connStr As String = "Data Source=WillSQL\ict2;Initial Catalog=timesql_testing;Integrated Security=SSPI"
Dim sql = "SELECT [EmployeeID], [StartDate] FROM [tblEmployees] where [login] = #loginname"
Using conn As New SqlConnection(connStr)
Using cmd As New SqlCommand(Sql, conn)
cmd.Parameters.Add(New SqlParameter With {.ParameterName = "#loginname", .SqlDbType = SqlDbType.NVarChar, .Value = vname})
conn.Open()
Dim rdr = cmd.ExecuteReader()
If rdr.HasRows Then
rdr.Read()
rve = rdr.GetString(0)
rvsd = rdr.GetDateTime(1)
End If
End Using
End Using