c copy table from one dataset to another

... W2Sïit Just one of the m0st accomplished advertisers of all time Trang 3 & & | started as a salesman, a door to door salesman for kitchen stoves, on commission If | sold | got a commission ... anything to anyone? Trang 26 Enter to win and earn a part-time fellowship at OgilvyOne The top finalists are flown to Cannes, France, for the final competition at the Cannes Lions International Advertising ... pitch is merely part of it Sales begins well before your first contact and continues long after It’s a relationship business, so be in it for the long-term Sales people and customers should be creating

Ngày tải lên: 18/06/2014, 15:05

... the following command, which runs sqlcmd and connects to the SQLEXPRESS instance (see Figure 1- 6): sqlcmd -S \sqlexpress Figure 1- 6 Connecting to SQLEXPRESS with sqlcmd 7 9004ch01final.qxd ... database concepts, from the basics to the new T-SQL features of SQL Server 2005. This book will also help you to build your code competency in a gradual manner because I begin with the easy topics ... Introduction B ecause most real-world applications interact with data stored in relational databases, every C# programmer needs to know... this file to a location on your host PC (such as

Ngày tải lên: 08/08/2014, 18:21

... indicates a one- to- many r elation- ship, as many orders can belong to one customer. Here, Customers is referred to as the parent table, and Orders is the child table in the relationship. CHAPTER ... and click Execute You should see the results shown in Figure 4-7 select CustomerID, TerritoryID , Row_Number() over (Partition by TerritoryID order by CustomerID) as [RowCount] from Sales.Customer ... the complete process from conception to implementa- tion. The entire development and implementation process of this cycle can be divided into small phases; only after the completion of each phase

Ngày tải lên: 08/08/2014, 18:21

... SELECT INTO statement is used to create a new table containing or not containing the result set returned by a SELECT query. SELECT INTO copies the exact table structure and data into another table ... restrictions: it will not copy any constraints, indexes, or triggers from the source table. Try It Out: Creating a New Table In this exercise, you’ll see how to create a table using a SELECT INTO ... 5-3. Table 5-3. Wildcard Characters Wildcard Description % Any combination of characters. Where FirstName LIKE 'Mc%' selects all rows where the FirstName column equals McDonald, McBadden,

Ngày tải lên: 08/08/2014, 18:21

... Insert the code in Listing 8-2 into the code editor Listing 8-2 button1_Click()... transaction to both add a customer to and delete one from the Northwind Customers table The Customers table ... savings account. This involves two operations: deducting money from the checking account and adding it to the savings account. Both must succeed together and be committed to the accounts, or ... directive to Transaction.cs using System.Data.SqlClient; 6 Next you want to add a click event for the button Double-click button1, and it will open the code editor with the button1_click event

Ngày tải lên: 08/08/2014, 18:21

... command to a connection... connection to the command’s Connection property that they become associated // connect command to connection cmd.Connection = conn; Console.WriteLine("Connected command ... cmd.Connection = conn; Console.WriteLine("Connnected command to this connection."); } 2 Run the code by pressing Ctrl+F5 You should see the results in Figure 11-2 Figure 11-2 Connecting a command ... variables OdbcConnection conn = null; OdbcDataReader reader = null; try { // open connection conn = new OdbcConnection(connString); conn.Open(); CHAPTER 9 ■ GETTING TO KNOW ADO.NET184 9004ch09final.qxd

Ngày tải lên: 08/08/2014, 18:21

... = @" select companyname, contactname from customers where contactname like 'M%' "; // create connection SqlConnection conn = new SqlConnection(connString); CHAPTER 12 ■ USING ... Customers table for the columns CompanyName and ContactName, where contact names begin with the letter “M.” // query string sql = @" select companyname, contactname from customers where contactname ... integrated security = true; database = northwind "; // query string sql = @" select contactname from customers "; // create connection SqlConnection conn = new SqlConnection(connString);

Ngày tải lên: 08/08/2014, 18:21

... Add a new C# Console Application project named PersistChanges to your Chapter13 solution. Rename Program.cs to PersistChanges.cs. 2. Replace the code in PersistChanges.cs with the code in Listing ... employees set city = @city where employeeid = @employeeid "; // create connection SqlConnection conn = new SqlConnection(connString); CHAPTER 13 ■ USING DATASETS AND DATA ADAPTERS 291 9004ch13final.qxd ... would come here // } catch(Exception e) { Console.WriteLine("Error: " + e); } finally { // close connection conn.Close(); } } } } CHAPTER 13 ■ USING DATASETS AND DATA ADAPTERS 287 9004ch13final.qxd

Ngày tải lên: 08/08/2014, 18:21

... bring it back toward the left, the controls wouldn’t readjust themselves according to the width of the resized form. Developers were bound to write code to shift controls accord- ingly to account ... [...]... source view, so to see your change in effect, you need to switch back to Design view When you have a lot of changes, it can be a tedious process to see how each change made to the ... property to Incorrect ADO.NET code will... property to blank (i.e., no text is assigned) 7 To attach the code behind the Button control, double-click the Button control 9004ch15final.qxd

Ngày tải lên: 08/08/2014, 18:21

... SqlCommand cmd = conn.CreateCommand(); // specify stored procedure to be executed cmd.CommandType = CommandType.StoredProcedure; cmd.CommandText = "sp_DbException_2"; try { // open connection ... released and a control has the focus. MouseClick Occurs only when a control is being clicked by the mouse. MouseDoubleClick Occurs when a control gets double-clicked by the mouse. MouseDown Occurs when ... button5_Click() // create connection SqlConnection conn = new SqlConnection(@" data source = .\sqlexpress; integrated security = true; database = northwnd "); // create command SqlCommand

Ngày tải lên: 08/08/2014, 18:21

... [Table( Name="Customers")] public class Customer and then you’d have to change the typed table definition to Table& lt;Customer> customers = db.GetTable<Customer>(); to be consistent. The [Column] ... [Column] public string customerId; [Column] public string companyName; [Column] public string city; [Column] public string country; } Entity classes provide objects in which LINQ stores data from data ... SQL to the database server, and creates objects from the result set. You create a typed table: // create typed table Table<Customers> customers = db.GetTable<Customers>(); A typed table

Ngày tải lên: 08/08/2014, 18:21

... Page 3 CHAPTER 1 s GETTING OUR TOOLS Figure 1- 2 VCSE Welcome 4 The End-User License Agreement window appears (see Figure 1- 3) Check the check box to accept the license, then click Next ... Dominic Shakeshaft, Jim Sumser, Keir Thomas, Matt Wade Project Manager: Elizabeth Seymour Copy Edit Manager: Nicole Flores Copy Editors: Nicole Abramowitz, Liz Welch Assistant Production Director: ... deeply into relational database concepts and techniques, from designing and creating tables, to more advanced queries and data manipulation, to a full chapter on writing stored procedures

Ngày tải lên: 09/08/2014, 14:20

... You can’t restore the Northwind database, because the kind of restore you’re doing requires exclusive access, and SSMSE is currently connected to Northwind through the query. Click OK to close ... Server, to be covered in Chapter 4). The connection will use W indo ws A uthentication, meaning any user who can log in to the server machine can connect to the N or thwind database . CHAPTER ... please refer to its documentation for specifics In addition to these operators, the LIKE operator (see Table 3 -2) allows you to match patterns in character data As with all SQL character data,

Ngày tải lên: 09/08/2014, 14:20

... Odbc namespace. Table 4-5. Commonly Used Odbc Classes Class Description OdbcCommand Executes SQL queries, statements, or stored procedures OdbcConnection Represents a connection to an ODBC data ... application uses ODBC functions to submit database requests. ODBC converts the function calls to the protocol ( call-level interface) of a driver specific to a given data source. The driver communicates ... Application project, named ConnectionOleDb, and rename Program.cs to ConnectionOleDb.cs 2 Replace the code in ConnectionOleDb.cs with that in Listing 5 -3 This is basically the same code as Connection.cs,

Ngày tải lên: 09/08/2014, 14:20

... create a command • How to associate a command with a connection • How to set command text • How to use ExecuteScalar() for queries that return single values • How to use ExecuteReader() to process ... Parameters collection property of the command you want to parameterize: // create commands SqlCommand cmdqry = new SqlCommand(sqlqry, conn); SqlCommand cmdnon = new SqlCommand(sqlins, conn); // ... employees {0}\n" , cmdqry.ExecuteScalar() ); } catch (SqlException ex) { Console.WriteLine(ex.ToString()); } finally { conn.Close(); Console.WriteLine("Connection Closed."); } } }

Ngày tải lên: 09/08/2014, 14:20

... // create connection SqlConnection conn = new SqlConnection(connString); You create a data adapter, assigning to its SelectCommand property a command that encapsulates the query and connection ... original data source changes made to a dataset. ■Note Changes you make to a dataset aren’t automatically propagated to a database. To save the changes in a database, you need to connect to the database ... either connected or disconnected operations. You left the standard conn.Close(); in the finally block. Since you can call Close() without error on a closed connection, it presents no problems if called

Ngày tải lên: 09/08/2014, 14:20

... write any code to access Customers, not even to perform navigation... to the right of Customers node (if there’s no check, click the Customers node to make it appear), and then click DataGridView ... ControlBindingsCollection object, which is a collection of Binding objects, each of which you can add to the collection with its Add method. A data- bound control can have a collection of bindings, each associated ... project to prove this 9 Put Customers back the way it was by changing WOLZA’s city back to Warszawa and deleting customer zzz Click Save Data to propagate the changes to the database Once again,

Ngày tải lên: 09/08/2014, 14:20

... and click Execute Stored Procedure… A prompt window will... customer ID with the customer name To get it, you have to access the Customers table Enter the following query into SSMSE and execute ... PROCEDURES 5 To execute the stored procedure, expand the Stored Procedures node, right-click it, and click Refresh, to display the new stored procedure node Then right-click dbo.sp_Select_All_Employees ... = c. customerid The result of the first join, which matches orders to employees, is matched against the Customers table from which the appropriate customer name is retrieved for each matching

Ngày tải lên: 09/08/2014, 14:20

... specific catch clause, the generic catch clause would have handled the exception. (Try commenting out this catch clause and reexecuting the code to see which catch clause handles the exception.) ... "); // Create command SqlCommand cmd = conn.CreateCommand(); // Specify that a stored procedure to be executed cmd.CommandType = CommandType.StoredProcedure; cmd.CommandText = "sp_DbException_1"; ... the code in Listing 13-4 to the button3_Click method. Listing 13-4. button3_Click() // Create connection SqlConnection conn = new SqlConnection(@" data source = .\sqlexpress; integrated security

Ngày tải lên: 09/08/2014, 14:20

... SqlCommand cmd = new SqlCommand(); cmd.CommandText = "SELECT TOP 1 CustomerId, CompanyName FROM Customers"; cmd.Connection = conn; try { listBox1.Items.Clear(); // open connection conn.Open(); ... the click event handler for the fourth button. Listing 15-9. button4_Click() // create connection SqlConnection conn = new SqlConnection(@" data source = .\sqlexpress; integrated security ... StateChange event to two handlers conn.StateChange += new StateChangeEventHandler(ConnStateChange); conn.StateChange += new StateChangeEventHandler(ConnStateChange2); // create command SqlCommand

Ngày tải lên: 09/08/2014, 14:20