Note: Many old Microsoft VFP docs are now free on (search for “Visual FoxPro 9.0 documentation PDF”).
: Calling Windows API functions ( DECLARE - DLL ) and automating Excel/Word.
: Most examples focus on the "Command Window" or programmatic table manipulation. : Opens a table. APPEND BLANK : Adds a new record to a table. : Updates field values, often with a clause (e.g., REPLACE ALL status WITH 'Active' FOR balance > 0 : Opens a window to view and edit table contents directly. Key Learning Resources (PDF)
LOCAL lcCustomerName, lnTotalOrders, ldExpiryDate lcCustomerName = "Acme Corporation" lnTotalOrders = 150 ldExpiryDate = ^2026-12-31 && Strict date format YYYY-MM-DD * Displaying data to the screen ? "Customer:", lcCustomerName ? "Orders:", lnTotalOrders Use code with caution. Conditional Logic (IF-ELSE and CASE) visual foxpro programming examples pdf
: These are a collection of runnable projects that demonstrate specific features. You can often find them in your local VFP installation folder, such as C:\Program Files\Microsoft Visual FoxPro 9\Samples\Solution . They cover everything from form controls to complex data manipulation.
* Method 1: Traditional Xbase commands (Procedural) USE Customers IN 0 SHARED SET ORDER TO CompanyName SEEK "ACME CORP" IF FOUND() REPLACE MaxCredit WITH MaxCredit * 1.10 ENDIF USE * Method 2: Native SQL Engine (Set-Oriented) UPDATE Customers ; SET MaxCredit = MaxCredit * 1.10 ; WHERE UPPER(Company) == "ACME CORP" Use code with caution. 2. Object-Oriented Programming (OOP) in VFP
Creating user interfaces is a key strength of VFP. Examples should illustrate how to use the Form Designer, bind controls to data sources ( ControlSource ), and handle events. "Advanced VFP Form Techniques" Note: Many old Microsoft VFP docs are now
* Create a physical DBF file CREATE TABLE customers ; (cust_id C(5), company C(30), active L, balance N(10,2)) * Append a new record APPEND BLANK REPLACE cust_id WITH "C0001", ; company WITH "Alpha Tech Ltd", ; active WITH .T., ; balance WITH 1250.50 * Append using SQL Insert (Recommended for modern VFP) INSERT INTO customers (cust_id, company, active, balance) ; VALUES ("C0002", "Beta Solutions", .T., 4500.00) Use code with caution. Querying Data with Local SQL
VFP's SQL implementation is robust. Examples should demonstrate SELECT-SQL statements for querying data from multiple tables, updating records, and inserting data.
: Use standard monospace fonts like Consolas or Courier New for all code sections to maintain perfect indentation. : Opens a table
LOCAL lnFileHandle, lcFileContent * Create and write to a log file lnFileHandle = FCREATE("C:\Temp\app_log.txt") IF lnFileHandle > 0 =FPUTS(lnFileHandle, "Log Entry: " + TTOC(DATETIME()) + " - System started successfully.") =FCLOSE(lnFileHandle) ENDIF * Read data back from the file IF FILE("C:\Temp\app_log.txt") lcFileContent = FILETOSTR("C:\Temp\app_log.txt") ? "File Content: " + lcFileContent ENDIF Use code with caution.
lnHandle = SQLSTRINGCONNECT("Driver=SQL Server;Server=myServer;Database=myDB;Trusted_Connection=Yes;") if lnHandle > 0 SQLEXEC(lnHandle, "SELECT * FROM Employees", "curEmployees") SELECT curEmployees BROWSE SQLDISCONNECT(lnHandle) endif Use code with caution. Copied to clipboard Reference Material for Development
PROCEDURE INIT USE HOME(0) + "Samples\Data\Customer.dbf" IN 0 ALIAS customers SHARED THIS.grdData.RECORDSOURCE = "customers" ENDPROC