ado net code in c

Tài liệu XML Features in ADO.NET ppt

Ngày tải lên : 10/12/2013, 14:16

... object for the simple reason that each ADO. NET object can be referenced only by one container object You cannot have the same instance of, say, a DataTable object belonging to two distinct DataSet ... information out of the final document, and you can even resort to the DiffGram format ADO. NET has a lot more to offer when it comes to interacting and integrating with XML In particular, in NET ... you can also choose the actual XML schema and control the structure of the resulting XML document You can mirror the contents of the DataSet, including tables and relations, you can take the schema...

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Tài liệu Using ADO.NET Design-Time Features in Classes Without a GUI pptx

Ngày tải lên : 14/12/2013, 18:16

... important because there is no user interface for a component A control is a component that provides user interface functionality and inherits from the System.Windows.Forms.Control class, which in turn ... the Component A control is a component, but a component is not necessarily a control To create a component, simply right-click on a project or folder in the Solution Explorer window and select ... handler The C# code for the test container is shown in Example 7-34 Example 7-34 File: UsingDesignTimeFeauresWithComponentsForm.cs // Namespaces, variables, and constants using System; using System.Data;...

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Tài liệu Execute Parameterized Stored Procedures in ADO.NET ppt

Ngày tải lên : 14/12/2013, 20:16

... GetString Returns the current record, getting the column specified, and returns it as string DataReader GetInt32 Returns the current record, getting the column specified, and returns it as 32-bit integer ... System.EventArgs) Handles btnView.Click Dim ocnn As New OleDb.OleDbConnection(BuildCnnStr("(local)", "Northwind")) Dim ocmdCustHist As New OleDb.OleDbCommand("CustOrderHist", ocnn) 10 Dim odrCustHist As OleDb.OleDbDataReader ... btnView This code takes the connection and creates the command object The name of the stored procedure is passed, and the command type is specified, which is CommandType.StoredProcedure Next,...

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Tài liệu Objects That Are Found in ADO.NET doc

Ngày tải lên : 24/12/2013, 06:17

... Object Purpose Command Similar to the ADO Command object, this allows you to execute stored procedures in code Unlike the ADO version, however, you can create a DataReader object using the ExecuteReader ... by commands and the data adapters Unlike the recordset from ADO and DAO, the data set actually brings back a hierarchical view of the data Using properties and collections in the DataSet object, ... ExecuteReader method Connection This object opens a connection to the server and database with which you want to work Unlike the ADO Connection object, the way that the connection remains open depends...

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Tài liệu Add and Delete Rows in a Dataset with ADO.NET pdf

Ngày tải lên : 21/01/2014, 12:20

... modaCustIndiv.Update(mdsCustIndiv, "Customers") mdsCustIndiv.Tables("Customers").AcceptChanges() ' Close the connection modaCustIndiv.DeleteCommand.Connection.Close() Catch excData As Exception MessageBox.Show("Error ... mdsCustIndiv.Tables("Customers").AcceptChanges() 90 91 ' Close the connection 92 If mblnAdd Then 93 modaCustIndiv.InsertCommand.Connection.Close() 94 LoadList() 95 Else 96 modaCustIndiv.UpdateCommand.Connection.Close() ... the command builder create an Insert SQL command 81 modaCustIndiv.InsertCommand = ocbCustIndiv.GetInsertCommand 82 Else 83 ' Have the command builder create an update SQL command 84 modaCustIndiv.UpdateCommand...

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A Programmer’s Guide to ADO.NET in C# potx

Ngày tải lên : 22/03/2014, 18:20

... database connections • OdbcConnection creates and manages connections to ODBC data sources • OleDbConnection creates and manages connections to an OLE-DB data sources In VS NET, you can create a connection ... for you In this chapter, we’ll be concentrating on adding a connection through VS NET The easiest way to add a connection to a project in VS NET is to drag a connection component (SqlConnection, ... ﬁnishing this chapter, you’ll have a good understanding of data components and how to work with them in VS NET Creating Your ADO. NET Project Begin your project by launching VS NET and choosing...

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ado.net in a nutshell

Ngày tải lên : 07/04/2014, 15:00

... a Custom Data Provider Chapter Connections Section 3.1 Connection O bject O verview Section 3.2 The Connection String Section 3.3 O pening and Closing Connections Section 3.4 Connection Pooling ... Data Nam espace AcceptRejectRule Com m andBehavior Com m andType ConnectionState Constraint ConstraintCollection ConstraintEx ception DataColum n DataColum nChangeEventArgs DataColum nChangeEventHandler ... string conString2 = "Data Source=localhost;" + "Initial Catalog=pubs;Integrated Security=SSPI"); SqlConnection = new SqlConnection(); con.ConnectionString = conString1; con.Open(); // The initial...

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C# Corner: C# and .NET Developer''''s NetworkAll Source Code ADO.NET ppt

Ngày tải lên : 12/08/2014, 06:20

... PM] C# Corner: C# and NET Developer's Network Exception Handling All Source Code ADO. NET Exception Handling General GDI+ Internet Mobiling Multithreading Networking Printing Security Strings ... 7:20:44 PM] C# Corner: C# and NET Developer's Network All Source Code ADO. NET Exception Handling General GDI+ Internet Mobiling Multithreading Networking Printing Security Strings & Arrays Windows ... Downloads Events Hosting Links Magazines Members News Letter Sponsors Training Tools Jobs Join C# Corner Our Partners Submit Code Win Prizes Mindcracker Above code in C# A C# Code public class PersonAge...

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Tài liệu Microsoft ADO .NET step by step

Ngày tải lên : 17/08/2012, 08:39

... Getting to Know ADO. NET Chapter 1: Introducing ADO. NET Chapter 2: Building Tables of Data Chapter 3: Storing Data in Memory Chapter 4: Accessing the Right Data Values Chapter 5: Bringing ... namespace as the DataTable class, defines a single column in your table’s schema DataColumn objects can be created as independent instances for inclusion in a DataTable object’s Columns collection, ... legacy applications to NET Although ADO and ADO. NET components can appear in the same application, they can interact only indirectly because their object libraries are unrelated When communicating...

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Giới thiệu cơ bản ADO .NET cho người lập trình C

Ngày tải lên : 18/08/2012, 11:53

... OdbcConnection(connString); conn.Open(); OdbcCommand cmd = new OdbcCommand(sql, conn); [ /code] Hix…viết xong thấy mệt Chỉ biết viết thông c m heng C n ADO. NET API nghiên c u thêm Kết th c ADO. NET ... C n ADO. NET cho người lập trình C# Author : Xcross87 [code] using System.Data.Odbc; … String connString = @”dsn=northwindodbc”; … OdbcConnection conn = null; OdbcDataReader reader = null; … conn ... … Conn = new OledbConnection(connString); conn.Open(); Page of 2007 C n ADO. NET cho người lập trình C# Author : Xcross87 2007 OledbCommand cmd = new OleCommand(sql, conn); [ /code] Sử dụng ODBC...

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Các thao tác kết nối ADO.NET sử dụng cấu trúc dòng lệnh với namespace System.Data

Ngày tải lên : 28/08/2012, 11:13

... sửa c p nhật thông tin Hướng dẫn: - Xử lý kiện SelectedIndexChanged Khi th c lưu thông tin h c sinh, c n phải kiểm tra xem h c sinh c n lưu c table HOCSINh chưa? - Nếu chưa c th c INSERT INTO ... dẫn th c hành Nhập môn CNPM C i đặt hàm để load danh sách h c sinh vào ListView - Ta c i đặt hàm Doc_DanhSach_HocSinh() để lấy thông tin h c sinh bảng HOC_SINH từ CSDL sau: - Tiếp theo ta c i đặt ... h c sinh - Th c xóa thông tin h c sinh c n phải biết mã h c sinh c n xóa: Delete From HOCSINH Where MaHS=’???’ Hướng dẫn th c hành Nhập môn CNPM Chúng ta thấy, để chương trình chạy (kết nối CSDL)...

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ASP .NET cơ sở dữ liệu với ADO .NET

Ngày tải lên : 06/09/2012, 16:31

... (ho c OleDbConnection1.Open) nơi muốn mở kết nối Creating Commands in VS .NET • Kéo thả thành phần Command từ Toolbox • X c định Connection M c tiêu • Giới thiệu – ADO. NET C c Công nghệ kh c • C c ... corresponding row in your database Objectives • Introduction – ADO. NET and other technologies • Connected Objects – Objects List – Demonstrations – Using Disconnected Objects in VS .NET • Disconnected ... rowCustomer("ContactName") = "NewContactName“ ‘Can use EndEdit or CancelEdit here End If • Use BeginEdit, EndEdit, CancelEdit to cache changes Demonstrations Disconnected Objects • Checking database...

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Chương 6 ADO.NET I

Ngày tải lên : 30/10/2012, 08:55

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Chương 6: Lập trình web form với ADO.Net

Ngày tải lên : 12/03/2013, 09:26

... SqlConnection cnn = new SqlConnection("Data Source=(local); Initial Ctalog=QLbansach;User ID=sa;Password="); SqlCommand cmd = new SqlCommand("GetchudeByMaCD", cnn); cmd.Connection = cnn; cmd.CommandType ... thủ t c TableDirect: Tên Connectionủa table VD: SqlCommand cmd As SqlCommand = New SqlCommand(); cmd.Connection = cnn; cmd.CommandType = CommandType.Text; cmd.CommandText = "Select * From Khachhang" ... Phết-www.thayphet .net Khoa CNTT, Trường C CNTT TP.HCM Connection String: Khi th c kết nối c n khai báo thông tin cho Connection thông qua thu c tính Connection String Tùy thu c vào Data Provider:...

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asp-net-mvc2-in-action

Ngày tải lên : 07/05/2013, 15:13

... http://www.manning.com/ASP.NETMVC2inAction Author Online The purchase of ASP .NET MVC in Action includes free access to a private web forum run by Manning Publications, where you can make comments about ... your controllers Creating a StructureMap controller factory 194 Creating a Ninject controller factory 197 Creating a Castle Windsor controller factory 200 Summary 202 14 Model binders and value ... Certified Application Developer (MCAD) and is an active member in the NET community, leading open source projects, giving technical presentations, and facilitating technical book clubs Currently,...

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Microsoft press microsoft ADO NET 4 step by step oct 2010

Ngày tải lên : 06/08/2013, 17:44

... Getting to Know ADO. NET Chapter 1: Introducing ADO. NET Chapter 2: Building Tables of Data Chapter 3: Storing Data in Memory Chapter 4: Accessing the Right Data Values Chapter 5: Bringing ... namespace as the DataTable class, defines a single column in your table’s schema DataColumn objects can be created as independent instances for inclusion in a DataTable object’s Columns collection, ... legacy applications to NET Although ADO and ADO. NET components can appear in the same application, they can interact only indirectly because their object libraries are unrelated When communicating...

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Truy cập dữ liệu với ADO.NET

Ngày tải lên : 30/09/2013, 02:20

... SqlDataAdapter(commandString, connectionString); Ví dụ sau minh họa vi c lấy đối tượng DataSet c ch tạo đối tượng Connection Command c ch riêng biệt, ta c n dùng lại chúng hay muốn th c hoàn chỉnh thao t c ... SqlDataAdapter( commandString, connectionString); 148 Truy c p liệu với ADO. NET Gvhd: Nguyễn Tấn Trần Minh Khang Hàm khởi tạo đối tượng gồm hai tham số commandString connectionString commandString chuỗi chứa ... lại cho phương th c kh c T khai báo chuỗi kết nối truy vấn : string connectionString = "server=localhost; uid=sa; pwd=; database=northwind"; string commandString = "Select * from Customers"; C c...

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Điều khiển ADO.NET

Ngày tải lên : 02/10/2013, 08:20

... lớp(nằm thư m c App _Code) IntrodureInfo.cs using System; namespace iTechPro.Modules.Introdure { public class IntrodureInfo { int _pkIntrodureID; public int pkIntrodureID { get { return _pkIntrodureID; ... OleDbConnection(); oleconn.ConnectionString = driver; Thu c tính: ConnectString: chứa đựng chuỗi kết nối tới sở liệu Database: Chứa đựng tên sở liệu chuỗi kết nối ConnectString bạn thay đổi sở liệu l c th c thi ... Code adminIntrodure.aspx.cs using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI;...

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ADO.NET trên .Net compact framework

Ngày tải lên : 02/10/2013, 21:20

... trữ ConstraintCollection thu c tính Constraints Vsi dụ, để truy c p ConstraintCollection bảng DataSet, sử dụng sau: m_phonebookDS.Tables[0].Constraints C c bư c để tạo khởi tạo ràng bu c: Bư c ... UniqueConstraint(String name, DataColumn col) Creates a UniqueConstraint with specified name that enforces uniqueness on a single DataColumn UniqueConstraint(DataColumn col) Creates a UniqueConstraint ... bu c vào tập hợp Constraints bảng th c hợp Bư c 2: Thiết lập c DataSet.EnforceConstraints thành true để bật yêu c u ràng bu c Khi thiết lập c thành true, ràng bu c tập hợp DataTable.Constraints...

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Introducing ADO.NET

Ngày tải lên : 03/10/2013, 00:20

... legacy applications to NET Although ADO and ADO. NET components can appear in the same application, they can interact only indirectly because their object libraries are unrelated When communicating ... After NET arrived on the scene, ADO. NET became the natural successor to ADO Although conceptual parallels exist between ADO. NET and ADO, the technologies are distinct and incompatible Note ADO ... for interacting with tabular data, one of the most useful ways of organizing data, especially in a business setting As you will see in upcoming chapters, the concepts included in this opening chapter...

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