Updating dataset c

The connection object associated with the SELECT statement must be valid, but it does not need to be open.If the connection is closed before Fill is called, it is opened to retrieve data, and then closed.This would free up the connection so that it could be used by other applications, improving our application's scalability.Disconnected Recordsets also made applications more scalable in other ways.If the data adapter encounters duplicate columns while populating a Data Table, it generates names for the subsequent columns, using the pattern "columnname1", "columnname2", "columnname3", and so on.If the incoming data contains unnamed columns, they are placed in the Data Set according to the pattern "Column1", "Column2", and so on.

However, if the Missing Schema Action property is set to Add With Key, appropriate primary keys, and constraints are also created.Open(); var cmd = new Sql Command("SELECT * FROM TAGS$",connection To SQL); var da = new Sql Data Adapter(cmd); var b = new Sql Command Builder(da); foreach (Data Row r in dt. Update(dt); It's difficult to tell what is being asked here.This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form.The four properties are set to Command objects that are used when data is manipulated.For instance, when we call the Data Adapter's Fill method to retrieve data from a data source and pour it into a Data Set, the Command object in the Select Command property is used.

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