Tài liệu Writing and Reading XML Using a DataSet Object ppt

... Using the WriteXml() Method Let's say you have a DataSet object named myDataSet. Assume that myDataSet has a DataTable that contains the CustomerID, CompanyName, ContactName, and Address columns ... "ORDER BY CustomerID"; SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; DataSet myDataSet = new DataSet( );...

Ngày tải lên: 24/12/2013, 01:17

... data adapter, data table, and data view are declared at the form level. The data adapter is created and the DataTable is filled when the form is loaded with all customers. Using a DataColumn object, ... DataView object to present your data in different ways? Technique This How-To displays a set of command buttons that display a letter and an extra command button that di...

Ngày tải lên: 21/01/2014, 12:20

... 4.2 Add and Delete Rows in a Dataset with ADO.NET Again using the OleDbDataAdapter and OleDbCommandBuilder objects, this How-To shows you how to use unbound controls with the dataset to add and ... will notice that the fields have now taken on a sunken look and that they are cleared. Fill in the Customer ID and Company Name text boxes with AAA1 and Another Example. N...

Ngày tải lên: 21/01/2014, 12:20

... networks have transmission parameters [][][] [] AAA A n 123 ,, , , , then the equivalent two-port parameter will have a transmission parameter given as [] [] [] [] [] AAAA A eq n = 123 * ... z V I I 22 2 2 0 1 = = (7.7) The z-parameters are also called open-circuit impedance parameters since they are obtained as a ratio of voltage and current and the parameters are o...

Ngày tải lên: 13/12/2013, 01:15