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Added: 2002-08-19

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Hold onto your frilly knickers folks, this is where we dive straight in at the deep end, with a tonne of real-world code. You should find the below code fairly easy to walk through, with comments every step of the way. Add this behind your 'Find It!' command button and give it a test run!

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Highlight AllPrivate Sub cmdFind_Click() Dim db As Database 'This is the object that will hold the connection 'to our database Dim rs As Recordset 'This is the object that will hold a set of 'records coming back from the database Dim SQLString As String 'This is just to temporarily hold the SQL string Set db = OpenDatabase("c:Microsoft Visual StudioNwind.mdb") 'This activates the database object, telling it 'to link to the Nwind.mdb database. Note that 'you may have to change this path depending on 'where Visual Basic has been installed on your PC. SQLString = "SELECT Orders.CustomerID, " & _ "Count(Orders.OrderID) " & "AS NoOfOrders From Orders " & "GROUP BY Orders.CustomerID " & "HAVING (((Orders.CustomerID)='" & txtCustID.Text & "'))" 'This SQL statement was created in Access. It simply returns 'the number of orders for a particular customer using the ''Count' feature on the 'Total' line. If you'd like to use 'Count, but are a little unsure about it - search Access help - 'it's very simple! Set rs = db.OpenRecordset(SQLString) 'This ties the recordset object with the database object. 'You're telling it to set the recordset object to whatever 'the "db.OpenRecordset" function returns. And that function 'will return a set of records according to the SQL statement 'you pass it. If rs.BOF = True And rs.EOF = True Then 'Obviously the customer cannot be found in the 'orders table, so let's tell the user - and close 'the recordset/database connections MsgBox ("Cannot find customer - " & "txtCustID.Text & " - " & "in the Orders table!") rs.Close db.Close Exit Sub End If txtTotalNumber.Text = rs.Fields("NoOfOrders") 'Simply throws the value in the 'NoOfOrders' field 'from the Recordset, direct into the txtTotalNumber 'text box SQLString = "SELECT Orders.CustomerID, " & "Last(Orders.OrderDate) " & "AS LastOrderDate From Orders " & "GROUP BY Orders.CustomerID " & "HAVING (((Orders.CustomerID)='" & txtCustID.Text & "'))" 'We've already figured out the number of orders - so 'this is the SQL statement that finds out the last order 'date Set rs = db.OpenRecordset(SQLString) 'This is the second time we've seen this statement. Here, 'it says the Recordset object to hold the records 'from our new SQLString statement txtLastDate.Text = rs.Fields("LastOrderDate") 'Here, we're taking the information from the 'LastOrderDate' 'field and placing it in the txtLastDate text box txtLastDate.Text = Format(txtLastDate.Text, "Long Date") 'Now we're just formatting to make it look pretty rs.Close 'Close the Recordset db.Close 'Close the Database End Sub

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