When you call the Update method, the Ms Db2Data Adapter analyzes the changes that have been made and executes the appropriate command (INSERT, UPDATE, or DELETE).
When the Ms Db2Data Adapter encounters a change to a Data Row, it uses Insert Command, Update Command, or Delete Command to process the change.
Fill(ds Production,"Companies"); String str Development SQL = "SELECT * FROM [Global].[dbo].[Companies] WHERE Company ID ='" str SQLDest Database "'"; Sql Data Adapter da Development = new Sql Data Adapter(str Development SQL, cn Development SQL); Data Set ds Development = new Data Set(); da Development. If you call the Get Changes method on the second Data Set, I bet you'll find you get an empty Data Table in it.
Fill(ds Development,"Companies"); if (ds Production. Peter -- Co-founder, developer portal: Blog: wrote: Hi, I have a situation in where i have two instances of SQL server, the first is our Production Environment, the second is our Development environment.
For more information see Generating Commands with Command Builders. After a row updates successfully, the changes to that row are accepted.
Update is called to resolve changes from a Data Set back to the data source.
However, you can create a Sql Command Builder or Ole Db Command Builder object to automatically generate SQL statements for single-table updates if you set the Select Command property of a . Then, any additional SQL statements that you do not set are generated by the Command Builder.
This generation logic requires key column information to be present in the Data Set. After any data is loaded back into the Data Set, the On Row Updated event is raised, allowing the user to inspect the reconciled Data Set row and any output parameters returned by the command. I don't want to update records one by one because I have millions of records and it will take time alot That sounds painful. For that much data manipulation it seems like you should keep it all in SQL instead of pulling it all out, massaging it, and then updating. Read the article at Practices/61537/ for best practices on asking questions. I m going to update many records at a that I collect all the data in datatable and then I want to dump it in sql table. Update, like Fill, takes as arguments an instance of a Data Set, and an optional Data Table object or Data Table name.The Data Set instance is the Data Set that contains the changes that have been made, and the Data Table identifies the table from which to retrieve the changes.You must explicitly set the commands before calling Update.