c updating database - Updating an access database

In fact when I do a single table Access database, the queries are all parameterized like: UPDATE [table] Set [item1][email protected], [item2][email protected] WHERE [ID][email protected]ID would be the primary key in the above.You can see how this comes about in the following tutorial: Tutorials/Basic Gridvew The process used there automatically generated parameterized queries.You can take a look at the complete code by following this link.

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(For an example of this scenario, see Walkthrough: Using a Data Grid Web Control to Read and Write Data.) Alternatively, you can update the database directly, using SQL statements or stored procedures, which is what this walkthrough illustrates.

This walkthrough illustrates how to create a Web Forms page that reads and writes data to a database using SQL statements. Close() End Sub // C# private void ddl Category ID_Selected Index Changed(object sender, System.

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For the walkthrough, you will work with the Categories table of the SQL Server Northwind database. Event Args e) Finally, you want to add code that will update the database with changes from the record displayed in the page.

In the page, you can select a record, edit it, and then save it to the database. As with fetching a single record, the update requires that you set some parameters and then execute a statement (in this case, an Update statement).

I am guessing your update query is over-specified -- perhaps all you need in the WHERE clause is the seleted ID of the record. I think your update query should be of the form: UPDATE [Table] SET [item1] = ? Only the ID of the record is needed for the update query. the example from the link below for displaying results from an access database.

there an easy way to have a name of a file in one of the fields in the database which is a photo, (e.g.

Is the primary key properly represented in the update query?

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