using the shape language to retrieve hierarchical data
Tài liệu Retrieve Data by Using the DataReader Object docx
... heard that the DataReader object is a fast way to get data. How do you retrieve data using the DataReader object to perform this task? Technique For this How -To, you will be using the ListBox ... loading items into it by using the DataReader object. To get to the DataReader object, you need to look at the Command object. The Command object in .NET works similarly to the ADO Command ... loop, you can test for datareader.Read() to check whether to terminate the loop and also to iterate through the rows that the DataReader object returns. After you have the DataReader populated...
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Tài liệu Using the Data Form Wizard to Create a Windows Form phần 1 pdf
... Choosing the data connection 7. Click the Next button to continue. 8. You now log in to the database by specifying the password for the database user. You used the sa user when creating the database ... shows the completed form up and running. Notice that the top part of the form shows the details for the row from the Customers table where the CustomerID is ALFKI; the bottom part of the form ... ShipCountry Figure 6.19: Entering the name of the new DataSet 5. Click the Next button to go to the next step. 6. You must now choose a data connection to access the database. You can pick an existing...
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Tài liệu Using the Data Form Wizard to Create a Windows Form phần 2 doc
... display the new form, as shown in Figure 6.26. Notice that the top part of the form shows the details for the row from the Customers table where the CustomerID is ALFKI; the bottom part of the ... automatically displayed in the DataGrid. Feel free to try out the other buttons on your form to add, modify, and delete rows in the Customers table. You can also use the DataGrid control to ... editCustomerID is bound to the CustomerID column of the Customers table. This means that when you run the form and load data from the database, the CustomerID column value will be displayed in the...
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Using while- reading techniques to improve reading comprehension for the 11th form students at phan dang luu high school
... and the reading for specific information. In the while- reading stage, to direct students to the general understanding of the text, the teacher may ask them to guess the title, to match the ... and the True/ False questions, the teacher needs to be aware that the students can guess the answer rather than base on the text. To exploit the text efficiently, it is plausible to ask the ... used to draw the students’ attention to the main ideas of the text. The students are given a list of statements about the text and they must decide whether they are true or false according to...
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Certain issues from the perspective of applying the Communicative Language Teaching to the teaching of oral English in HaUI
... review To provide a theoretical background to the study, this chapter is devoted to the reexamination of the concepts most relevant to the thesis’s topic. Firstly, an account of the CLT theory ... obvious. The teacher may try to provide students with a lot of language items which will then be stored in their brain. If there is no demand for using language, those items will be the end in themselves. ... students think the researcher wants to read rather than their real feelings. Moreover, the number of the subjects is small which may influence the implications of the thesis to some extent. The results...
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Using While- Reading Techniques to Improve Reading Comprehension for the 11th Form Students at Phan Dang Luu High School
... and the reading for specific information. In the while- reading stage, to direct students to the general understanding of the text, the teacher may ask them to guess the title, to match the ... clues to ideas of what follows. It is advisable to ask the students to pay attention to the title, the beginning, the end as well as the topic sentence of each paragraph that usually conveys the ... if they work on their own during the reading process, make full use of the class time to read and do the exercises to achieve a full understanding of the text. Its is necessary for them to...
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Module 4: Using ADO to Access XML Data
... XML Data Island Use XML-aware browsers to process XML data on the client. A common technique is to store the data in an XML data island on the Web page, and bind data controls to the XML data ... is to use XML to represent the data. This is a particularly effective way to handle data on a Web site where the presentation of the data may depend on the type of client that is accessing the ... sites. Topic Objective To introduce the topics in this section. Lead-in ADO can be used to retrieve XML data for a Web Site. Module 4: Using ADO to Access XML Data 27 Lab 4.2: Using...
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Module 5: Using HTTP to Access XML Data
... fields to allow users to enter data. The data is then appended as a query string to the URL specified in the Action attribute, and sent to the server when the user clicks a Submit button. The ... from the URL of the virtual directory and the dbobject path returned by the query. When the page is rendered, the dbobject path is used to retrieve the individual images and display them on the ... point to New, and then click Virtual Directory. 4. On the General tab, name the virtual directory “Northwind”, and then set the path to the My Documents folder. 5. Click Security, and then...
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Using a DataGrid Control to Access a Database
... property of your DataGrid to your DataSet object. This sets the source of the data for your DataGrid, allowing the rows from your DataSet to be displayed in your DataGrid. To set the DataSource property, ... Entering the DataSet details in the Generate Dataset dialog box 4. Click the OK button to continue. This adds a new DataSet object named dataSet11 to your form. Next, you'll need to set the DataSource ... the Preview Data link near the bottom of the Properties window. This displays the Data Adapter Preview dialog box. 2. In the Data Adapter Preview dialog box, click the Fill Dataset button to...
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Using a SqlConnection Object to Connect to a SQL Server Database phần 1
... close the database connection using the Close() method // of the SqlConnection object new SqlConnection(connectionString); // open the database connection using the // Open() method of the ... and stored in the pool, ready to be used again. If you then supply the same details in the connection string (same database, username, password, and so on), then the connection from the pool ... using System; using System .Data; using System .Data. SqlClient; class ConnectionPooling { public static void Main() { // create a SqlConnection object to connect to the database,...
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Tài liệu Using a SqlConnection Object to Connect to a SQL Server Database phần 2 doc
... Open to Closed The InfoMessage Event The InfoMessage event fires when the database returns a warning or information message produced by the database. You use the InfoMessage event to monitor these ... illustrates how to use the StateChange event */ using System; using System .Data; using System .Data. SqlClient; class StateChange { // define the StateChangeHandler() method to handle the // ... you can see, the time to open the first connection is relatively long compared with the subsequent ones. This is because the first connection makes the actual connection to the database. When...
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