I am using a function called "CreateSQLParam " which adds SQL parameters to a
collection.
The function is shown below... I add a parameter to a collection using the
following line code...
------------------------------------------------------------------------------------
dim vcContractNo as varchar
dim colParms as collection
vcContractNo = "07-00001"
' Add a paramter to the collection
colParms.Add(Cr eateSQLParam("@ vcContractNo", ContractNo, SqlDbType.VarCh ar,
ParameterDirect ion.Input)
------------------------------------------------------------------------------------
I am getting an error on the "ContractNo " field in the above line that says
"option strict on
disallows narrowing from type 'object' to type 'string' in copying the
value of ByRef parameter "sValue" back to the matching argument"
Here is the function...
-----------------------------------------------------------------------------------------
Function CreateSQLParam( ByVal sName As String, ByRef sValue As Object, ByVal
varType As System.Data.Sql DbType, ByVal varDir As ParameterDirect ion) As
SqlClient.SqlPa rameter
Dim objParam As SqlClient.SqlPa rameter
objParam = New SqlClient.SqlPa rameter()
objParam.Parame terName = sName
If IsNothing(sValu e) Then sValue = System.DBNull.V alue
objParam.Value = sValue
objParam.SqlDbT ype = varType
objParam.Direct ion = varDir
CreateSQLParam = objParam
End Function
-------------------------------------------------------------------------------------------
So in looking at the function, I am passing a varchar value (ContractNo) to
sValue which has been defined as an object and hence the error message.
Short of turning "option strict OFF", what is the best way to keep my
generic function so that I can pass whatever data type is required to the
functions sValue parameter? It must somehow mean I need to explicitely
define the type of variable coming in isntead of using object but how and
where would I do this?
Help!!
Thanks, Brad
Jul 10 '07
11  1750 
Cor Ligthert [MVP] wrote:
Goran,
I agree with you almost everything, however is it not that you are talking
about C#.
No, obviously it's not, as there are no ByRef and ByVal keywords in C#.
I tried it and it does not work.
Exactly what did not work?
Although my IDE makes from it
nicely the correct VB code even in VBNet 2003.
(-:
Cor
>You can remove the ByVal keywords also, that is the default way that
parameters are passed. Stick with the default, unless you actually need to
pass a parameter by reference.
--
--
Göran Andersson
_____ http://www.guffa.com
"Cor Ligthert [MVP]" <no************ @planet.nlschri eb
Brad,
In addition to the as forever very good explanation from Armin.
I see it coming: One day, we will have a Skype call. :-) (..why not?)
Armin This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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following line code...
------------------------------------------------------------------------------------
dim ContractNo as varchar
dim colParms as collection
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