connecting to a text file using ado net
Module 3: Using ADO.NET to Access Data
... how to retrieve data from a database by using a DataReader. Lead-in You can also use a DataReader object to read data from a database. 20 Module 3: Using ADO. NET to Access Data BETA MATERIALS ... Accessing Data with DataReaders 37 Binding to XML Data 44 Lab 3: Using ADO. NET to Access Data 49 Review 50 Module 3: Using ADO. NET to Access Data 22 Module 3: Using ADO. NET to Access Data ... DataSets ! Using DataSets to Read Data!Storing Multiple Tables in a DataSet! Using DataViews!Displaying Data in the DataGrid Control!Demonstration: Displaying Data in a DataGrid!Practice:...
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Tài liệu Using ADO.NET Design-Time Features in Classes Without a GUI pptx
... to its design surface: • Drop a SqlDataAdapter onto the design surface and use the Data Adapter Configuration Wizard to connect to the Northwind sample database on the local SQL Server. Accept ... controls and wizards to facilitate creation of and management of properties of ADO. NET objects. You want to use that design-time functionality when creating classes that do not have a GUI. Solution ... rename the SqlDataAdapter control to da. • A SqlConnection control is automatically added to the design surface when the • A component is a class that implements the IComponent interface...
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Building a Sample Application Using ASP.NET AJAX
... 10:47 AM Page 239226 CHAPTER 10 ■BUILDING A SAMPLE APPLICATION USING ASP .NET AJAXFigure 10-1. An ASP .NET AJAX-based stock applicationUnderstanding the Application ArchitectureThe application ... service to get the DataTableback. The DataTablethen loads thegraph with the appropriate data.CHAPTER 10 ■BUILDING A SAMPLE APPLICATION USING ASP .NET AJAX244828-8 CH10.qxd 10/11/07 10:47 AM ... ■BUILDING A SAMPLE APPLICATION USING ASP .NET AJAX232828-8 CH10.qxd 10/11/07 10:47 AM Page 232As such, ZedGraph makes an excellent choice for use in an ASP .NET AJAX-based proj-ect and is easy to implement...
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Create and Execute On-the-Fly Batch Updates by Using ADO.NET
... Create and Execute On-the-Fly Batch Updates by Using ADO. NET Sometimes in database applications, you want to create and execute stored procedures that don't currently exist. When you have ... How -To shows you how to create and execute these stored procedures. It's great that you can execute stored procedures that are already created, but what if you need to generate one at ... caption How -To 4.4. When the form loads, you will see an example update statement in a text box. Click on the Execute button to execute the update statement. A TextBox control is then displayed...
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Tài liệu Connecting to a Microsoft Excel Workbook ppt
... Create a SQL SELECT statement referencing a worksheet or a range in an Excel workbook and execute the statement to fill a DataSet using a DataAdapter or to create a DataReader. For example: ... 1-2. Example 1-2. File: ExcelForm.cs // Namespaces, Variables, and Constants using System; using System.Configuration; using System.Data; private OleDbDataAdapter da; private DataTable ... INSERT INTO [MySheet$] (Field1, Field2, Field3) VALUES ('testdata', 1.234, '09/28/1979'); Retrieve data Use either a DataAdapter or a DataReader to retrieve data from an Excel...
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Tài liệu Connecting to a Named Instance of SQL Server or Microsoft Data Engine (MSDE) docx
... ConfigurationSettings.AppSettings["Sql_Msde_ConnectString"]); Manager and Query Analyzer are also shared. The System.Data.SqlClient class cannot automatically discover the port number of a named instance of SQL Server listening on a port other than ... need to understand what a SQL Server or MSDE named instance is and how to connect to one. The sample code contains a single event handler: Connect Button.Click Creates and opens a connection to ... File: ConnectNamedInstanceForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Windows.Forms; using System .Text; using System.Data.SqlClient;...
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Tài liệu Connecting to a Password-Protected Access Database ppt
... resultTextBox .Text = result.ToString( ); } Discussion A Microsoft Access database password requires that users enter a password to obtain access to the database and database objects. This is also ... addition to those defined by ADO. NET. To open a database secured by a Microsoft Access database password, use the Jet OLEDB:Database Password attribute in the connection string to specify the password. ... known as share-level security. A password does not allow groups or users to have distinct levels of access or permissions. Anyone with the password has unrestricted access to the database. The...
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How to create a Raid Device using Madadm
... parity and data are distributed in all. If one hard disk fails, data on that can be regenerated by the data and parity information in the other two hard disks.###RAID###Raid 5 :need 3 disksRaid ... pointhttp://helpinlinux.blogspot.com/search/label/storageHow to create a Raid Device using madadm in linux rhel5 with level 5, 0 and 1The following article explains what is Raid, what are important levels and how to install and configure a raid device ... is mainly used for data protection. It protects our data storage from failures and data loss. All storage units now use raid technology. It has following uses.1. Data protection2. Increasing...
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Automatic text extraction using DWT and Neural Network
... extracted according to these special texture features of characters. Paul et al [3] segmented and classified texts in a newspaper by generic texture analysis. Small masks are applied to obtain ... obtain local textural characteristics. All the text extraction methods described above are applied on uncompressed images. Today, most of digital videos and static images are usually stored in ... to extract features of candidate text regions. A neural network based on back propagation algorithm (BP) is trained according to these features. The final network output of real text regions...
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Text extraction from name cards using neural network
... 2) Local contour characteristics analysis; 3) Relative contours alignment analysis; 4) Contours classification using neural network; 5) Text area binarization. Details of the above ... Besides the features extracted from the color histogram analysis, two additional basic spatial features i.e. width and height are used. C. Relative contours alignment analysis Local characteristics ... this contour is considered as a text contour. Figure4 shows a classification result, where only the contour areas that are classified as text areas are shown. Figure 4. Classification result...
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