Dataadapter update not updating database
Note: Keep in mind that this Update is different than a SQL UPDATE statement.To insert, update, and delete data using a Data Adapter, you create an Ole Db Command object with INSERT, UPDATE, and DELETE statements and set the Insert Command, Update Command, and Delete Command properties of the data adapter to Ole Db Command.
The Sql Data Adapter uses the Connection object of the .So Here I am trying to show you some of the easiest way to accomplish this.Here I want to let you know that every changes that we have done with dataset, Dataset retains the Row State value for each row and then according to this Row State value. NET, Part 2 Pages: 1, 2, 3, 4 Because Data Sets are always disconnected from their data sources, making changes in a Data Set never has any effect on the data source.To propagate changes, additions, and deletions back to a data source, call the Sql Data Adapter class's Update method, passing the Data Set and the name of the table that is to be updated. Update(ds, "Categories") ' Close the database connection. Close( ) Step 5 forces the Sql Command Builder object to generate SQL statements for performing the database update, insert, and delete operations. Select("Category Name = 'Dairy Products'")(0) ' Change the value in the Description column.For example, the following call to Update writes changes from the Data Table named Categories back to the SQL Server table of the same name: statement that was provided to the Sql Data Adapter object or can be explicitly provided to the Sql Data Adapter object. When the Update method is called, the Sql Data Adapter object notes that no values have been set for its Update Command, Insert Command, and Delete Command prperties, and therefore queries the Sql Command Builder object for these commands. row("Description") = "Milk and stuff" ' Perform the update. Update(ds, "Categories") ' Close the database connection.
Example 8-2 shows an example of allowing an Sql Data Adapter object to infer the SQL ' Open a database connection. If any of these properties had been set on the Sql Data Adapter object, those values would have been used instead.
If you spot a rule that is out of date, please email or if you are cool tweet me,or one of the people in above acknowledgements.
SSW Consulting has over 25 years of experience developing awesome Microsoft solutions that today build on top of Angular JS, Azure, TFS, Share Point, . With 40 consultants in 5 countries, we have delivered the best in the business to more than 1,000 clients in 15 countries.
Generally we used Data Set for having the collection of Data.
Now we use this Data Set as a Data Source of any of the Data Control like; Grid View, List View etc for showing this Data to User.
SSW will look at your Website Design and Development needs and help you design and implement an effective Website.