Updating dataset in c


10-May-2018 11:17

If you aren't using data-bound controls, then you have to manually call the Update method of the same Table Adapter (or data adapter) that you used to populate the dataset.

However, you can also use different adapters, for example, to move data from one data source to another or to update multiple data sources.

Those methods perform the change tracking that's needed for updating the data source.

If you call the Remove At collection on the Rows property, the deletion won't be communicated back to the database. When you merge datasets, new records in the source dataset are added to the target dataset.

(A concurrency violation occurs when another user modifies a record in the data source after the dataset has been filled.)To make changes to an existing data row, add or update data in the individual columns.

If the dataset contains constraints (such as foreign keys or non-nullable constraints), it's possible that the record can temporarily be in an error state as you update it.

For the latest documentation on Visual Studio 2017, see Save data back to the database on docs. If you modify that data, it's a good practice to save those changes back to the database.

You do this in one of three ways: When you data bind dataset tables to controls on a Windows Form or XAML page, the data binding architecture does all the work for you.

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If you do send the changes back to the database, then a second step is required.Microsoft is conducting an online survey to understand your opinion of the Msdn Web site.If you choose to participate, the online survey will be presented to you when you leave the Msdn Web site. If you aren't using data binding, and are saving changes for related tables, you have to manually instantiate a variable of the auto-generated Table Adapter Manager class, and then call its Udpate All method.

Two-stage update process and the role of the Data Row Version in a successful update A dataset contains collections of tables, which contain a collections of rows.

If you intend to update an underlying data source later, you must use the methods on the Data Table.



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