modifying data using a strongly typed dataset

... Data Using a Strongly Typed DataSet In Chapter 10 , you saw how to create and use a strongly typed DataSet class named MyDataSet. You can use objects of this class to represent the Customers table ... table and rows from that table. In this section, you'll see how to modify data using a strongly typed object of the MyDataSet class. Note One of the features of a strongly typed DataSet ... and Address columns from the Customers table sqlConnection1.Open(); sqlDataAdapter1.Fill(myDataSet1, "Customers"); // get the Customers DataTable MyDataSet.CustomersDataTable...

Ngày tải lên: 24/12/2013, 01:17

... ds.Categories) [ Team LiB ] Recipe 2.19 Replacing Null Values in a Strongly Typed DataSet Problem When a column in a database has a null value, you want the value in the DataSet to be a ... Create the typed DataSet without null annotation. CategoriesDS_AnnotatedNull ds = new CategoriesDS_AnnotatedNull( ); // Fill the Categories table within DataSet. da.Fill(ds, CATEGORIES_TABLE); ... Create the DataAdapter. SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Categories", ConfigurationSettings.AppSettings["Sql_ConnectString"]); if (annotatedRadioButton.Checked)...

Ngày tải lên: 14/12/2013, 18:16

... name Annotatio n DataTable TableNameDataTable typedPlural DataTable methods NewTableNameRowAddTableNameRowDeleteTableNa meRow typedName DataRowCollect ion TableName typedPlural DataRow TableNameRow ... typed DataSet and the default names and available annotations for each. Table 2-18. Default values and available annotations for elements of strongly typed DataSet objects Element Default name ... TableNameRow typedName DataColumn DataTable.ColumnNameColumnDataRow.ColumnName typedName Property PropertyName typedName Child accessor GetChildTableNameRows typedChildr en Parent accessor TableNameRow...

Ngày tải lên: 24/12/2013, 05:15

... typed DataSet class contains, in addition to a single class extending the DataSet class, three classes for each table in the DataSet extending each of the DataTable, DataRow, and DataRowChangeEvent ... or a command line approach. Discussion A strongly typed DataSet is a collection of classes that inherit from and extend the DataSet, DataTable, and DataRow classes, and provide additional ... data source changes. Applications using these strongly typed DataSet objects will need to be rebuilt with a reference to the new strongly typed DataSet. With an untyped DataSet, as long as...

Ngày tải lên: 21/01/2014, 11:20

... System .Data. SqlClient.SqlDataAdapter mySqlDataAdapter = new System .Data. SqlClient.SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; MyDataSet myDataSet = new MyDataSet(); sqlConnection1.Open(); ... mySqlDataAdapter.Fill(myDataSet, "Customers"); sqlConnection1.Close(); MyDataSet.CustomersDataTable myDataTable = myDataSet.Customers; foreach (MyDataSet.CustomersRow myDataRow ... consider using strongly typed DataSet objects. On the other hand, if your database tables change a lot, you should probably avoid them because you'll need to regenerate the strongly typed DataSet...

Ngày tải lên: 21/01/2014, 07:20

... tables. UpdateOrders( ) Takes a DataSet argument containing the changes made to the DataSet created by the LoadOrders( ) method, creates two DataAdapter objects with CommandBuilder generated ... bool UpdateOrders (DataSet ds) { // Create the DataAdapters for order and order details tables. SqlDataAdapter daOrders = new SqlDataAdapter("SELECT * FROM Orders", ConfigurationSettings.AppSettings["DataConnectString"]); ... Use a DataSet object. The XML web service code contains two methods: LoadOrders( ) Creates and returns a DataSet containing the Orders and Order Details tables from Northwind and a DataRelation...

Ngày tải lên: 24/12/2013, 05:15

Ngày tải lên: 26/01/2014, 10:20

Ngày tải lên: 26/01/2014, 10:20

... Identifying Data- Related Use Cases and Data Requirements Module 3: Using a Conceptual Design for Data Requirements Activity 3.2: Relating Data Requirements to Conceptual Design Module 3: Using a Conceptual ... is directly traceable to an actor and an object within a use case. Nonfunctional data requirements A nonfunctional data requirement more completely describes a functional data requirement. ... solution has no data requirements, it has no need for data storage, let alone a logical data organization. Determining the functional data requirements from the solution’s use cases involves...

Ngày tải lên: 10/12/2013, 17:15

... it again. The DataSet in this case is referred to as a disconnected DataSet as it doesn't maintain an active connection to the database. Disconnected DataSet objects act as a data cache ... time. Instead, a better approach is to connect to the database, fetch the data into a DataSet object, and then disconnect again. The user can browse the data in the DataSet and make any changes ... in applications. You can modify the data in the DataSet, and later reopen the connection and send the changes back to the database. You can manually open a connection to a database by creating...

Ngày tải lên: 15/12/2013, 00:15

... "ORDER BY CustomerID"; SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; DataSet myDataSet = new DataSet( ); mySqlConnection.Open(); ... "ORDER BY CustomerID"; SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; DataSet myDataSet = new DataSet( ); mySqlConnection.Open(); ... Chapter 16 , " ;Using SQL Server's XML Support." Using the WriteXml() Method Let's say you have a DataSet object named myDataSet. Assume that myDataSet has a DataTable that...

Ngày tải lên: 24/12/2013, 01:17

... [ Team LiB ] Recipe 2.1 Retrieving Hierarchical Data into a DataSet Problem You want to fill a DataSet with parent and related child data, even if the DataSet already has a schema that ... parent table, Orders, is bound to a data grid on the form. Load DataSet Button.Click Starts by clearing the data from the DataSet and refreshing the data grid. DataAdapter objects are created ... System.EventArgs e) { // Remove all data from the DataSet and refresh the grid. ds.Clear( ); dataGrid.Refresh( ); // Create parent and child data adapters. SqlDataAdapter daParent = new SqlDataAdapter("SELECT...

Ngày tải lên: 24/12/2013, 05:15

... 3, Using a Conceptual Design for Data Requirements” ! Activity 3.1, “Identifying Data- Related Use Cases and Data Requirements” ! Activity 3.2, “Relating Data Requirements to Conceptual Design” ... 3: Using a Conceptual Design for Data Requirements Activities Activity 3.1: Identifying Data- Related Use Cases and Data Requirements In this activity, students will determine data requirements, ... with a systematic method for beginning the design process by gathering information and then turning that information into use cases and data requirements. Both functional and nonfunctional data...

Ngày tải lên: 17/01/2014, 09:20

Ngày tải lên: 21/01/2014, 11:20

Ngày tải lên: 06/03/2014, 19:20

Ngày tải lên: 17/03/2014, 20:20

Ngày tải lên: 22/03/2014, 18:20

... Prevention of Pleural Adhesions Using a Membrane Containing Polyeth- ylene Glycol in Rats Volkan Karacam 1  , Ahmet Onen 2 , Aydin Sanli 2 , Duygu Gurel 3 , Aydanur Kargi 3 , Sami Karapolat 4 , Nezih ... Thorac Cardio- vasc Surg 2001;121:657-67. 5. Onen A, Sanli A. Surgical treatment of synchronous and meta- chronous lung cancer. Tur Toraks Der 2004;5:201-7. 6. Tanaka A, Abe T, Matsuura A. Prevention ... thoracoto- mies, Tanaka et al. demonstrated that adhesions which develop following thoracotomies may be suc- cessfully eliminated using hyaluronate-based ab- sorbable membran in rats [6]. Getman...

Ngày tải lên: 25/10/2012, 11:00

... They were fed intragastrically (i.g.) daily for 14 and 28 days. Tumor areas were measured every 7 days using a caliper, and the tumor area was calculated according to the formula: tumor volume ... Introduction Natural botanical products have a long history in the world and are featured in using a complex combination of herbs to treat various diseases (e.g. rheumatoid arthritis, menopausal symptoms, ... apoptotic cells were expressed as the number of apoptotic cells per field. Statistical analysis Statistical significance between the treatment groups was analyzed using a two-way statistical...

Ngày tải lên: 03/11/2012, 09:54

... normal then a deviation away from a fractal pattern may be indicative of a shift towards an unhealthy or less desirable control strategy. The analysis of fractal patterns in gait and posture data ... considered appropriate. Recently Parkinsonian patients (PP), spinocerebellar ataxia (SCA) patients, and healthy participants’ COP were analysed using a more traditional fractal dimension analysis ... method recorded COP data and analysed COP traces using an image analyser to calculate the fractal dimension directly from the image, as opposed to a time series data analysis such as in Higuchi’s...

Ngày tải lên: 03/11/2012, 10:09