Updating vb control from a c program

Posted by / 17-Nov-2017 00:37

Updating vb control from a c program

The Cursor Location property is then set to the built-in constant ad Use Client.

The term "cursor" refers to the temporary rows of a recordset. Client-side cursors can take a long time to build because the data must be pulled over to the client, but once built, traversing the cursor is usually very fast.

Forward-only cursors create static snapshots of data.

DAO remains a viable technology for interacting with MS Access databases as it is faster than ADO for that purpose; however, ADO is more flexible – using ADO, one could develop a prototype database application using MS Access in the back-end, and with a "flick of the wrist" (i.e., with very little coding changes) "upsize" that same application to use Oracle or SQL Server.

On other versions of Windows, some steps may vary slightly. MDB sample database should reside in the folder C:\Program Files\Microsoft Visual Studio\VB98. In that case, copy the file to the folder of your choice, and navigate to that folder to select the database for this step.

A number that identifies the real estate agent selling the property.

The settings for the other controls are given below. Connection object represents an open connection to a data source and a specific database on that data source, or an allocated but as yet unconnected object, which can be used to subsequently establish a connection.3. Here, the connection object variable mobj ADOConn is made available for use by setting it to a new instance of ADODB. Then, the Connection String property and the Open method of the ADODB. The Connection String property takes a string with various arguments delimited by semicolons.

When using a DSN as we are in this sample application, you typically need just the DSN name, the user id, and the password.

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All three connect to an ODBC Data Source, which must be set up through the Windows Control Panel. Follow the steps below to set up an ODBC Data Source (this process is also called "setting up a DSN", where "DSN" stands for "Data Source Name").

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