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In Windows Forms, the ___________ event is commonly used to update the user interface after data changes.

  • DataChanged
  • DataUpdated
  • DataSourceChanged
  • DataBindingComplete
The correct option is DataBindingComplete. This event is commonly used in Windows Forms applications to update the user interface after data changes. It occurs after a data-binding operation has finished, allowing developers to perform additional tasks or updates to the user interface based on changes to the data source.
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Resource management in ADO.NET includes handling of connections, ___________, and other database-related resources.

  • Indexes
  • Queries
  • Transactions
  • Views
In addition to managing connections, ADO.NET also involves handling transactions, which are sets of operations that are treated as a single unit of work. Proper transaction management ensures data integrity and consistency in the database.
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In the context of DropDownList controls, what is the purpose of the DataTextField property?

  • Defines the field that will be used to identify each item in the DropDownList
  • Determines the field that will be used to populate the DropDownList with data
  • Sets the text color of the items in the DropDownList
  • Specifies the connection string to the database
The DataTextField property of a DropDownList control is used to specify the field from the data source that will be used to populate the control with data. This property helps determine which data field will be displayed as the text for each item in the DropDownList. It's crucial for ensuring that the DropDownList accurately reflects the data retrieved from the database or another data source.
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In ADO.NET, what is the role of a DataTable within a dataset?

  • Acts as a connection manager
  • Holds data retrieved from a data source
  • Represents a single table of data in memory
  • Stores metadata about the data structure
A DataTable within a dataset serves as an in-memory representation of a single table retrieved from a data source. It holds the actual data rows along with metadata such as column names, data types, and constraints. This allows for disconnected access to data, enabling offline manipulation and processing.
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ADO.NET Entity Framework is an Object-Relational Mapping (ORM) tool that helps in bridging the gap between ___________ and ___________.

  • Application Layer and Database Layer
  • Business Logic and Presentation Layer
  • C# and SQL
  • Object-Oriented Programming (OOP) and Database Management Systems (DBMS)
ADO.NET Entity Framework bridges the gap between Object-Oriented Programming (OOP) and Database Management Systems (DBMS). It allows developers to work with relational data using domain-specific objects, thus enhancing productivity and reducing development time by abstracting the complexity of database interaction.
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In ADO.NET, how can you handle multiple result sets returned by a SELECT statement?

  • Using the SqlCommand.ExecuteReader() method
  • Using the SqlConnection.Open() method
  • Using the SqlDataAdapter.Fill() method
  • Using the SqlDataReader.NextResult() method
In ADO.NET, you can handle multiple result sets returned by a SELECT statement using the SqlDataReader.NextResult() method. This method advances the SqlDataReader to the next result set if available. It allows you to iterate through multiple result sets returned by the same command execution.
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To add a new row to a DataTable, you can use the ___________ method.

  • AddNewRow()
  • CreateRow()
  • InsertRow()
  • NewRow()
The NewRow() method of the DataTable class is used to create a new DataRow with the same schema as the DataTable. This method creates a new DataRow instance but does not add it to the DataRow collection. It simply returns a reference to the new DataRow, which you can then manipulate and add to the DataTable using the Add() method.
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Which namespace is commonly used for LINQ in C#?

  • System.Collections
  • System.Data
  • System.Linq
  • System.Xml
The System.Linq namespace is commonly used for LINQ in C#. It contains classes and interfaces that support LINQ query operations for various data sources such as collections, arrays, XML, and databases.
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In LINQ to Objects, is it possible to query in-memory collections like arrays and lists?

  • Depends on the Collection Size
  • No
  • Sometimes
  • Yes
Yes, LINQ to Objects enables querying in-memory collections such as arrays and lists. It provides a powerful and convenient way to manipulate data structures within the application's memory, offering functionalities like filtering, sorting, and projecting data from these collections.
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To enable connection pooling, you need to set the "Pooling" attribute in the connection string to ___________.

  • FALSE
  • No
  • TRUE
  • Yes
The "Pooling" attribute in the connection string should be set to "True" to enable connection pooling. This allows the .NET framework to manage connection pooling efficiently.
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Which ADO.NET class is commonly used to execute SELECT statements and retrieve data from a database?

  • SqlCommand
  • SqlConnection
  • SqlDataAdapter
  • SqlDataReader
The SqlDataAdapter class in ADO.NET is commonly used to execute SELECT statements and retrieve data from a database. It acts as a bridge between a dataset and a data source for retrieving and saving data.
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In ADO.NET, what does a Data Filter allow you to do with a DataView?

  • Aggregate rows
  • Filter rows
  • Group rows
  • Sort rows
A Data Filter in ADO.NET allows you to filter rows in a DataView based on specified criteria. This means you can display only the rows that meet certain conditions, such as those with specific values in certain columns or rows that satisfy a particular expression. Data Filters provide a way to customize the view of data and present only relevant information to the user.
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