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5.1.4 Start Programming, Abort and Change Status
Three buttons to Start, Continue and Abort a program process are placed on the GUI.
5.2 Source code
This demo is meant to control only one programming process using only one database
connection. This is the reason why the database connection (conn), the recordset (rsProg)
and the current ID (MaxID) are global variables.
All the relevant code is stored in the subs.
5.2.1 connect to the database
Because the database connection has to be set up as the very first step, it is already
executed when loading the form. The Visual Basic code for this is:
Set conn = New ADODB.Connection
conn.ConnectionString = "Data Source=ac_isppro"
conn.Open
5.2.2 getting a list of programmers
To give the user the ability to select a PPM you have to read the list of connected PPMs from
the table and store it in the combobox.
Dim rsPPMS
Set rsPPMS = New ADODB.Recordset
rsPPMS.ActiveConnection = conn
’Select unique Programmer names
rsPPMS.Open ("SELECT DISTINCT PPM from projects")
’Add to Projects combo-box
cbPPM.Clear
While Not rsPPMS.EOF
cbPPM.AddItem (rsPPMS("PPM"))
rsPPMS.MoveNext
Wend
5.2.3 getting list of projects
As soon as the user selects a programmer the list of projects has to be updated. You will
read the projects for this programmer from the same table and store it into another
combobox.
Dim rsProjects
Set rsProjects = New ADODB.Recordset
rsProjects.ActiveConnection = conn
’Select unique Programmer names
rsProjects.Open ("SELECT Project_Name from projects where PPM = ’" & _
cbPPM.Text & "’")
’Add to Projects combo-box
cbProjectName.Clear
While Not rsProjects.EOF
cbProjectName.AddItem (rsProjects("Project_Name"))
rsProjects.MoveNext
Wend
ISP-PRO - Remote Application Control V1.01 – 21/02/05
21
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