create strongly typed dataset in code

... 2.19 Replacing Null Values in a Strongly Typed DataSet Problem When a column in a database has a null value, you want the value in the DataSet to be a string indicating that no value is available. ... The sample code creates a strongly typed DataSet based on the Categories table in Northwind. The user specifies whether the one based on the default or annotated schema file is used. In either ... C# code is shown in Example 2-26 . Example 2-26. File: TypedDataSetNullsForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Text; using...

Ngày tải lên: 14/12/2013, 18:16

... The sample code creates a strongly typed DataSet based on the Categories table in Northwind. The user specifies whether the one based on the default or annotated schema file is used. In either ... different objects in a strongly typed DataSet and the default names and available annotations for each. Table 2-18. Default values and available annotations for elements of strongly typed DataSet objects ... Example 2-24. File: TypedDataSetNamesForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Text; using System.Data; using System.Data.SqlClient;...

Ngày tải lên: 24/12/2013, 05:15

... the example form. Modifying Data Using a Strongly Typed DataSet In Chapter 10 , you saw how to create and use a strongly typed DataSet class named MyDataSet. You can use objects of ... find a completed VS .NET example project for this section in the StronglyTypedDataSet2 directory. You can open this project in VS .NET by selecting File ➣ Open ➣ Project and opening the WindowsApplication4.csproj ... from that table. In this section, you'll see how to modify data using a strongly typed object of the MyDataSet class. Note One of the features of a strongly typed DataSet object allows...

Ngày tải lên: 24/12/2013, 01:17

... value using methods such as I sContactNameNull(), and you can set a column to null using methods such as Reading a Column Value Using Strongly Typed DataSet Classes A strongly typed DataSet ... Creating a Strongly Typed DataSet Class In this section, you'll create a strongly typed DataSet class that is used to access the Customers table. If you're following along with these instructions, ... Northwind database. You can also follow along with the instructions in this section by copying the DataReader directory to another directory and using that project as your starting point. Creating...

Ngày tải lên: 21/01/2014, 07:20

... functionality in classes from which the strongly typed classes inherit in the same way as with untyped classes. A strongly typed DataSet class contains, in addition to a single class extending the DataSet ... Generate (DataSet dataSet, CodeNamespace codeNamespace, ICodeGenerator codeGenerator); The arguments of the method are: DataSet The DataSet used to specify the schema for the typed DataSet. codeNamespace ... the typed DataSet. codeGenerator A class capable of dynamically rendering source code in a specific language and used to create the typed DataSet. Using an XSD schema file to generate a typed...

Ngày tải lên: 21/01/2014, 11:20

... public String getCode( ) { return m _code; } public void setCode(String code) { m _code = code; } public String getName( ) { return m_name; } public void setName(String name) ... oracle.jdbc.driver.OracleDriver. -encoding= encoding_character_set Controls the character set encoding used when writing the class files. The default is the value in the system property file.encoding. -input= input_filename ... appropriate INSERT statement will contain one placeholder in the INSERT statement's VALUES clause: insert into person_ot values ( ? ) Here, we've formulated an INSERT statement to insert...

Ngày tải lên: 29/09/2013, 09:20

... unitsInStock); Console.WriteLine("discontinued = " + discontinued); } This code results in the same output as Listing 9.1 . All I did in Listing 9.1 is to explicitly show that a DataReader ... Console.WriteLine("productName = " + productName); Console.WriteLine("unitPrice = " + unitPrice); Console.WriteLine("unitsInStock = " + unitsInStock); Console.WriteLine("discontinued ... productsSqlDataReader[unitPriceColPos]; object unitsInStock = productsSqlDataReader[unitsInStockColPos]; object discontinued = productsSqlDataReader[discontinuedColPos]; Console.WriteLine("productID = "...

Ngày tải lên: 21/01/2014, 07:20

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... launching the code. Good practices include making certain that administrative accounts are kept to a minimum, that administrators use a regular account as much as possible instead of logging in ... registry key of interest. The resulting .reg file can be merged into the registry on another machine by simply double-clicking it in Windows Explorer or calling it from a .bat file. Running regedit.exe ... it has already infected a machine. It does this by looking in the download directory for WIN-BUGFIX.exe. If this file can be found, the malicious code sets a Run key to invoke WIN-BUGFIX.exe...

Ngày tải lên: 22/10/2013, 16:15

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... containing Val favours reduction in tonic dopamine but increases in phasic dopamine, giving rise to decreased cognitive stability but increased cognitive flexibility. For the enzyme containing ... gene–environment interaction are useful in designing studies of the person-environment interactions that may cause continuous variation on the psychosis continuum. REFERENCES Bebbington, P., Wilkins, S., ... stress in psychosis is dopamine sensitisation resulting in alterations in dopamine transmission. That is, prolonged or severe stress may lead to hyper-reactivity of dopamine (DA) neurons in response...

Ngày tải lên: 01/11/2013, 09:20

... alkaline balance is really a reflection of your life and your inner world. The life giving balance of acid and alkalinity in your body is determined by two things: • Your Diet o Alkaline In- Take ... underneath in your life; getting rid of the symptoms will not fix your life If you are truly interested in building an incredible life, I highly recommend Tony Robbins’ life changing 7 day ... pleasant… i.e.: strong churning pressure in your stomach. That’s part of the acid which is building up in your blood as you indulge in these emotions. In fact most aches and pains are simply part...

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