using the get methods to read column values
Tài liệu Using the Get* Methods to Read Column Values doc
... Using the Get* Methods to Read Column Values Before I show you the other Get* methods that read column values, you need to know the standard C# types and the values they support. You need to ... "Introduction to Databases." Note The Get* methods are defined in all of the DataReader classes and work for all databases. Next you'll see how to use some of the methods shown ... TYPES, AND GET* METHODS SQL SERVER TYPE COMPATIBLE STANDARD C# TYPE GET* METHOD sql_varient object GetValue() text string GetString() timestamp byte[] GetBytes() tinyint byte GetByte() varbinary...
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Tài liệu An Example of Using the Get* Methods phần 1 pdf
... Column Values In addition to using the Get* methods to read column values as standard C# types, if you are using SQL Server, you can also use the GetSql* methods. The GetSql* methods return values ... STRONGLYTYPEDCOLUMNVALUES.CS /* StronglyTypedColumnValues.cs illustrates how to read column values as C# types using the Get* methods */ using System; using System.Data; using System.Data.SqlClient; ... productsSqlDataReader and that it may be used to read the five columns from the Products table. The following while loop uses the Get* methods and returned C# types shown in Table 9.5 to obtain the column...
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Tài liệu An Example of Using the Get* Methods phần 2 docx
... STRONGLYTYPEDCOLUMNVALUESSQL.CS /* StronglyTypedColumnValuesSql.cs illustrates how to read column values as Sql* types using the GetSql* methods */ using System; using System.Data; using ... Get* methods have to do. Tip If you are using SQL Server, always use the GetSql* methods and Sql* types rather than the Get* methods and the standard C# types. I showed you the Get* methods ... that reads the ProductID, ProductName, UnitPrice, UnitsInStock, and Discontinued columns from the Products table using the GetSql* methods. To figure out which GetSql* method to use to retrieve...
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Tài liệu Using the Shape Language to Retrieve Hierarchical Data doc
... DataReader for the Order Detail from the // IDataReader interface column. OleDbDataReader orderDetailDR = (OleDbDataReader)orderDR.GetValue(colOrder); // Iterate over records in the Order ... in the data reader with a data type of Object that is a DataReader. Hierarchical result sets combine the results for multiple queries into a single structure. They are generated using the ... (orderDR[colOrder] is IDataReader) { // The column is an IDataReader interface. result.Append(Environment.NewLine); result.Append(orderDR.GetName(colOrder).ToUpper( ) + Environment.NewLine);...
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Tài liệu Using the Drawing Methods doc
... instance when the mouse button is pressed. If it is, several things occur. The current x and y positions of the mouse are recorded as the values of the x and y variables, respectively. These values ... all the drawn lines. The last action in this script sets the down state variable to true, indicating that the mouse button is pressed. 4. Add the following onMouseUp event at the end of the ... the canvas. You will use clip events in concert with the hitTest() method to determine whether the mouse button is pressed while the mouse pointer is over the canvas_mc instance; you will then...
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Using while- reading techniques to improve reading comprehension for the 11th form students at phan dang luu high school
... may ask them to guess the title, to match the heading etc. He also may ask students to find out the specific information in the text by answering the questions, to use the information in the text ... the ideas in the text and get closer to the writer’s thinking. 3.3.1.1Technique: Identifying the relationship among sentences. To understand the organization of the text, the students need to ... 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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Using While- Reading Techniques to Improve Reading Comprehension for the 11th Form Students at Phan Dang Luu High School
... may ask them to guess the title, to match the heading etc. He also may ask students to find out the specific information in the text by answering the questions, to use the information in the text ... 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 ... students to read but we can not assume that all students are efficient readers. Much depends on how well they have been taught to read in their mother tongue.1.1.4 Types of reading.We read different...
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UNIT 3: A TRIP TO THE COUNTRYSIDE Lesson 3: Read. P25
... homework?5. How do the Parkers spend their weekend?VI/ HomeworkUNIT 3: A TRIP TO THE COUNTRYSIDEUNIT 3: A TRIP TO THE COUNTRYSIDELesson 3: Read Lesson 3: Read Saturday, October, 16th, 2010I/ ... thịtgrocery store (n): cửa hàng tạp hóaUNIT 3: A TRIP TO THE COUNTRYSIDELesson 3: Read I/ VocabularySaturday, October, 16th, 2010II/ Answers prediction. III/ Reading * Answer key: * The text ... exchange student in the USA. He is now living with the Parker family on a farm.UNIT 3: A TRIP TO THE COUNTRYSIDELesson 3: Read. P25I. Vocabulary1. maize (n): ngô, bắp 2. grocery store (n):cửa...
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Tài liệu The Only Way to get Certified Quickly. docx
... other, they could also collide with each other. If a host had to broadcast, then all other devices had to listen, even though they themselves were trying to transmit. And if a device were to ... many buildings, bridges were used to connect the buildings together. As more users were attached to the hubs used in the Ethernet network, performance of the network became extremely slow. ... reversed on the other end. In other words, pin 1 on one end connects to pin 8 on the other end; pin 2 connects to pin 7; pin 3 connects to pin 6; pin 4 connects to pin 5; pin 5 connects to pin...
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Tài liệu Using the Data Form Wizard to Create a Windows Form phần 1 pdf
... table contains a column named CustomerID that is a foreign key to the CustomerID column of the Customers table (CustomerID is the primary key for the Customers table). The use of the foreign key ... 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 ... displays the rows from the Orders table for that customer. When you move to the next row in the Customers table, the rows from the Orders table for that customer are automatically displayed in the...
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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 ... 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 editCustomerID ... displays the rows from the Orders table for that customer. When you move to the next row in the Customers table, the rows from the Orders table for that customer are automatically displayed in the...
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- using the internet to business and business in marketing
- using expression columns to display aggregate values
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- using the shape language to retrieve hierarchical data
- using the data form wizard to create a windows form phần 1
- using the data form wizard to create a windows form phần 2
- an example of using the get methods phần 2
- an example of using the get methods phần 1
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