Updating dataset c
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 user updates the excel sheet and I need to update the SQL values.) I am setting the dt.Row State to modified in an effort to invoke the Update. (Previous test show my SQL permissions and connection is good, I can modify the table.) connection To SQL = new Sql Connection(SQLConn String); connection To SQL.For help clarifying this question so that it can be reopened, visit the help center. This is why in my comment I asked for the example sourcecode where you're modifying rows in dt - because I presumed you would have that somewhere, in order to expect that the changes would jump from Excel (which populated I think the auto generated Sql Commands generated by Sql Command Builder are not really going to be suitable in your case (If I have understood the question correctly).In the WHERE clause of the SQL Update statements generated by Sql Command Builder,the values of ALL columns are compared with their original values (as determined by the original data values in the Data Row). NET has a Connection object that we use to manage our connection to our data source. Things start to get different when we look at the ADO. In many ways, the Data Set object looks like a weird amalgam of all of the old DAO objects holding tables, relations, and columns. To do that, the Data Adapter lets us specify the commands that should be carried out to retrieve and update data.
The Fill method retrieves rows from the data source using the SELECT statement specified by an associated Select Command property.
I suspect what you want is "Ad Criteria Key" behaviour.
One possible solution might be to NOT use Sql Command Builder, and simply write the INSERT/UPDATE/DELETE Sql Commands yourself, and attach them to Sql Data Adapter. There's some example code at : EDIT : the Sql Command Builder in versions 2.0 and later have a Conflict Option property.
The Data Adapter is the gatekeeper that sits between our Data Set and the data source.
Instead of using Command objects directly with a Connection, the Data Adapter manages our Command objects as they interact with the data source.