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This builds on the previous section, where we displayed the contents of the table in buttons update the database with data edited in any of the three data-aware components.You need to be careful to write the SQL strings correctly otherwise you can edit whole columns in the table inadvertently. We copied the whole folder of our Database Demo project, opened the project and saved it as file in form_database_ Have you tried the second sequence using literal values instead of using all teh variables? Also, FYI, you don't need all of those To String() calls there.Almost on a daily basis we run across posts that ask about using a . Oh it might have a slight variation like “How do I load a value from a database into a textbox?If so, should I reopen it to perform the update and then reclose it? Based on David-W-Fenton's comment, you might want to do your connection and dataadapter initializations in the Form_Load event, and then close the connection on Form_Closing event.First thing to check is the runtime path of the Access file that you're actually updating. NET, that the MDB file is part of your project, and that the "Copy Local" option is set to true on the MDB file, then it could just be that every time you run your program you overwrite the updates from the last execution.At the end we will cover a quick way to make a nice update to the database.
The Microsoft Access page in the Lazarus Wiki explains how to create your own file if ours does not work for you.We will work on reading a simple column (name) from an Access Database table (Employees) and stick those names into a listbox for selection.While there are many ways to do these things, I simply create 3 different ways that you can play with below.If I put it in a button it throws an exception "syntax error in insert into statement". Since you believe you're having issues with special characters, it's probably worthwhile to do it this way.Other question: Should I close the connection variable after loading the Data Grid View? Something like this should help - you'll have to modify the update command based on what your table columns are: This code is a slightly modified version of what MSDN has: How to: Bind Data to the Windows Forms Data Grid View Control Note that they use a Sql Db Command Builder in the example, but the overall principle remains the same.