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  • Example 1: Performing an exact-match search for users
  • Example 2: Performing a search on a composite key
  • Example 3: Searching for customers according to their gross sales
HReadSeekFirst (Example)
Example 1: Performing an exact-match search for users
WINDEVWEBDEV - Server codeReports and QueriesWindows MobileJavaUser code (UMC)PHPAjaxHFSQLHFSQL Client/ServerStored proceduresHyper File 5.5OLE DBNative Connectors (Native Accesses) The "Customer" file is browsed according to the "NAME" key, for the value contained in the sName variable.
HReadSeekFirst(Customer, Name, sName)
IF HFound(Customer) = True THEN
CustomerFound()
ELSE
UnknownCustomer()
END
Example 2: Performing a search on a composite key
WINDEVWEBDEV - Server codeReports and QueriesWindows MobileJavaUser code (UMC)PHPAjaxHFSQLHFSQL Client/ServerStored proceduresHyper File 5.5OLE DBNative Connectors (Native Accesses) This example is used to find and delete all the customers who have a specific last name and a specific first name. The search is performed on a composite key. The record is read.
HReadSeekFirst(CUSTOMER, LASTNAME_FIRSTNAME, [sLastName, sFirstName])
WHILE HFound(CUSTOMER) = True
HDelete(CUSTOMER)
HReadNext(CUSTOMER)
END
Example 3: Searching for customers according to their gross sales
Windows Mobile This example allows you to search for all the customers whose gross sales are greater than a specified value.
HReadSeekFirst(CUSTOMER, Turnover, X)
WHILE HOut(CUSTOMER) = False
AddCustomerList()
HReadNext(CUSTOMER)
END
Versión mínima requerida
  • Versión 9
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