Which of the following is correct way to rewrite the C#.NET code snippet given b

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using System.Windows.Forms;
using CtrlChars = Microsoft.VisualBasic.ControlChars; 
MessageBox.Show("Wait for a" + CrLf + "miracle");

using Microsoft.VisualBasic; 
using System.Windows.Forms; 
CtrlChars = ControlChars;
MessageBox.Show("Wait for a" + CtrlChars.CrLf + "miracle");

using Microsoft.VisualBasic; 
using System.Windows.Forms; 
CtrlChars = ControlChars; 
MessageBox.Show ("Wait for a" + CrLf + "miracle");

using System.Windows.Forms;
using CtrlChars = Microsoft.VisualBasic.ControlChars; 
MessageBox.Show("Wait for a" + CtrlChars.CrLf + "miracle");

Correct Answer

using System.Windows.Forms;
using CtrlChars = Microsoft.VisualBasic.ControlChars; 
MessageBox.Show("Wait for a" + CtrlChars.CrLf + "miracle");

Namespaces problems

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2. Which of the following statements is correct about a namespace in C#.NET?
Options
A. Namespaces help us to control the visibility of the elements present in it.
B. A namespace can contain a class but not another namespace.
C. If not mentioned, then the name 'root' gets assigned to the namespace.
D. It is necessary to use the using statement to be able to use an element of a namespace.
E. We need to organise the classes declared in Framework Class Library into different namespaces.

Discuss

4. Which of the following statements is correct about the using statement used in C#.NET?
Options
A. using statement can be placed anywhere in the C#.NET source code file.
B. It is permitted to define a member at namespace level as a using alias.
C. A C#.NET source code file can contain any number of using statement.
D. By using using statement it is possible to create an alias for the namespace but not for the namespace element.
E. By using using statement it is possible to create an alias for the namespace element but not for the namespace.

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5. If a class called Point is present in namespace n1 as well as in namespace n2, then which of the following is the correct way to use the Point class?
Options

namespace CuriousTabConsoleApplication
{ 
    class MyProgram
    { 
        static void Main(string[] args)
        { 
            import n1; 
            Point x = new Point();
            x.fun();
            import n2;
            Point y = new Point(); 
            y.fun();
        }
    }
}

import n1; 
import n2;
namespace CuriousTabConsoleApplication
{ 
    class MyProgram
    { 
        static void Main(string[] args)
        {
            n1.Point x = new n1.Point(); 
            x.fun();
            n2.Point y = new n2.Point(); 
            y.fun();
        }
    }
}

namespace CuriousTabConsoleApplication
{ 
    class MyProgram
    {
        static void Main(string[] args)
        {
            using n1;
            Point x = new Point();
            x.fun();
            using n2;
            Point y = new Point();
            y.fun();
        }
    }
}

using n1;
using n2; 
namespace CuriousTabConsoleApplication
{ 
    class MyProgram
    { 
        static void Main(string[] args)
        { 
            n1.Point x = new n1.Point(); 
            x.fun();
            n2.Point y = new n2.Point(); 
            y.fun(); 
        } 
    } 
}

Discuss

Correct Answer:

using n1;
using n2; 
namespace CuriousTabConsoleApplication
{ 
    class MyProgram
    { 
        static void Main(string[] args)
        { 
            n1.Point x = new n1.Point(); 
            x.fun();
            n2.Point y = new n2.Point(); 
            y.fun(); 
        } 
    } 
}

6. Which of the following C#.NET code snippets will correctly print "Hello C#.NET"?
Options

import System; 
namespace CuriousTabConsoleApplication
{ 
    class MyProgram
    { 
        static void Main(string[] args)
        { 
            Console.WriteLine("Hello C#.NET");
        } 
    } 
}

using System;
namespace CuriousTabConsoleApplication
{ 
    class MyProgram
    { 
        static void Main(string[ ] args)
        { 
            WriteLine("Hello C#.NET");
        } 
    } 
}

using System.Console; 
namespace CuriousTabConsoleApplication
{ 
    class MyProgram
    { 
        static void Main (string[ ] args)
        { 
            WriteLine("Hello C#.NET");
        } 
    } 
}

using System;
namespace CuriousTabConsoleApplication
{ 
    class MyProgram
    { 
        static void Main(string[] args)
        { 
            Console.WriteLine("Hello C#.NET");
        }
    }
}

Discuss

Correct Answer:

using System;
namespace CuriousTabConsoleApplication
{ 
    class MyProgram
    { 
        static void Main(string[] args)
        { 
            Console.WriteLine("Hello C#.NET");
        }
    }
}

7. If ListBox is class present in System.Windows.Forms namespace, then which of the following statements are the correct way to create an object of ListBox Class?

using System.Windows.Forms; 
ListBox lb = new ListBox();

using LBControl = System.Windows.Forms;
LBControl lb = new LBControl();

System.Windows.Forms.ListBox lb = new System.Windows.Forms.ListBox();

using LBControl lb = new System.Windows.Forms.ListBox;

using LBControl = System.Windows.Forms.ListBox; 
LBControl lb = new LBControl();

Options
A. 1, 3
B. 2, 4, 5
C. 1, 3, 5
D. 5 only

Discuss

9. If a namespace is present in a library then which of the following is the correct way to use the elements of the namespace?
Options
A. Add Reference of the namespace.
Use the elements of the namespace.
B. Add Reference of the namespace.
Import the namespace.
Use the elements of the namespace.
C. Import the namespace.
Use the elements of the namespace.
D. Copy the library in the same directory as the project that is trying to use it.
Use the elements of the namespace.
E. Install the namespace in Global Assembly Cache.
Use the elements of the namespace.

Discuss

10. Which of the following statements is correct about a namespace used in C#.NET?
Options
A. Nested namespaces are not allowed.
B. Importing outer namespace imports inner namespace.
C. Nested namespaces are allowed.
D. If nested, the namespaces cannot be split across files.

Discuss

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CuriousTab

CuriousTab

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Which of the following is correct way to rewrite the C#.NET code snippet given below?
using Microsoft.VisualBasic; using System.Windows.Forms; MessageBox.Show("Wait for a" + ControlChars.CrLf + "miracle");

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Which of the following is correct way to rewrite the C#.NET code snippet given below? using Microsoft.VisualBasic; using System.Windows.Forms; MessageBox.Show("Wait for a" + ControlChars.CrLf + "miracle");

Namespaces problems

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More in C# Programming:

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Which of the following is correct way to rewrite the C#.NET code snippet given below?
using Microsoft.VisualBasic; using System.Windows.Forms; MessageBox.Show("Wait for a" + ControlChars.CrLf + "miracle");