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What is the ExecuteNonQuery method?

September 21st, 2009

The ExecuteNonQuery method of the SqlCommand class is used to execute commands that change a database. These commands include the Transact-SQL INSERT, UPDATE, DELETE, and SET statements. The method acts directly on a database connection and does not require a data set. It returns an integer that indicates the number of rows affected by the execution of a command. This method can also be used to perform catalog operations, such as querying the structure of a database or creating database objects.

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is the GetChildRows method?

September 21st, 2009

The GetChildRows method of the DataRow class is used to get the child rows of a DataRow object. The DataRow class defines four overloaded versions of the method. Their signatures are as follows:

Signature Description
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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is the StrComp function?

September 20th, 2009

The StrComp function is used to compare two strings alphabetically. The function takes three parameters. It is defined as follows:

StrComp(Str1, Str2, CompareMethod)

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is the HelpNamespace property?

September 20th, 2009

The HelpNamespace property of a HelpProvider control is used to specify the name and location of the help file associated with the current HelpProvider control. The HelpNamespace property takes the fully qualified path and name of the help file. The help file can be either a compiled help file (.chm) or an HTML file.

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is the HelpNavigator property?

September 20th, 2009

HelpNavigator is an additional property that a form and all the controls on the form receive when a HelpProvider control is added to it. If the HelpNamespace property of the HelpProvider control on a form is set to a help file, this property determines which elements of the help file to display when the F1 key is pressed. The HelpNavigator property can be set to one of the following enumeration values as shown in the table below:

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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When does the Click event of a menu item occur?

September 20th, 2009

The Click event of a menu item occurs when a user clicks the menu item. This event also occurs when a user selects the menu item by using the keyboard and presses the Enter key. Moreover, this event is also raised if a user accesses the menu item using the access key or the shortcut key defined by the MenuItem control. This event is not raised for parent menu items.

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is Web Setup project?

September 1st, 2009

The Web Setup project is a Setup and Deployment project, which is used to create installation packages for the deployment of Web-based applications such as XML Web services, Web applications etc., to a Web server. It creates an (.msi) installer package. Using the Web Setup project for deployment handles the registration and configuration issues automatically.

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What is a destructor?

September 1st, 2009

A destructor is a special type of method. It is used to destroy instances of a class when they are no longer used by an application. A destructor has the same name as the class in which it resides, preceded by a tilde (~) symbol. The garbage collector determines when the destructor of a class is to be called, and automatically calls it. The destructor implicitly calls the Object.Finalize method on the object’s base class. Following are some restrictions imposed on the usage of destructors:

  • Destructors can be used only with classes.

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is SqlDataAdapter?

September 1st, 2009

SqlDataAdapter is a class used to represent a set of data commands and a database connection that are used to fill a DataSet and update a SQL Server database. It is used to retrieve and save data between a DataSet and a data source. The SqlDataAdapter class is used in conjunction with the SqlConnection and SqlCommand classes to enhance the performance while connecting to a SQL Server database.

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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What is Sn.exe?

August 31st, 2009

Strong Name (Sn.exe) is a tool used to sign assemblies with strong names. It also provides signature generation, signature verification, and key management. Following is the syntax for using Sn.exe:

sn [options [parameters]]

where, the term options specifies the options to be used, and parameters specifies the parameters used with options. Following are the options that are commonly used with Sn.exe:

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Posted in MCAD, MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003

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