Following locs throw an Invalid Operation exception.
OdbcDataAdapter theAdapter = new OdbcDataAdapter(DbCommand);
DataTable dtTable = new DataTable();
int nRecords = theAdapter.Fill(dtTable);
dtTable.Rows[0]["Name"] = "Jackie";
theAdapter.Update(dtTable); //Error!
Error: "Update requires a valid UpdateCommand when passed DataRow collection with modified rows."
Resolution is to add a OdbCommandBuilder, see following locs:
OdbcCommandBuilder theCommand = new OdbcCommandBuilder(theAdapter);
theAdapter.UpdateCommand = theCommand.GetUpdateCommand();
So, the udpated code looks like:
OdbcDataAdapter theAdapter = new OdbcDataAdapter(DbCommand);
DataTable dtTable = new DataTable();
int nRecords = theAdapter.Fill(dtTable);
OdbcCommandBuilder theCommand = new OdbcCommandBuilder(theAdapter);
theAdapter.UpdateCommand = theCommand.GetUpdateCommand();
dtTable.Rows[0]["Name"] = "Jackie";
nRecords = theAdapter.Update(dtAccounts);