objCmd.Parameters.Add("CustomerID", OleDbType.VarChar).Value = "ALFKI"These documentation links might help:
oCmd.CommandText = [select * from customers where CustomerID = ?] >>oPar = oCmd.CreateParameter("CustomerID", adVarChar, adParamInput, 6, "ALFKI") >>oCmd.Parameters.Append(oPar) >>oRs = oCmd.Execute()>>
>>>OleDbCommand objCmd = new OleDbCommand("select * from customers where CustomerID = ?"); >>>objCmd.Parameters.Add("CustomerID", "ALFKI"); >>>>>>
>>>No value given for one or more required parameters. >>>>>>