Assignment3 CAP406

8/8/2019 Assignment3 CAP406

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Modern Programming Tools and Tech.-II (CAP406)

Homework#3

Based On:Namespaces, collections, Windows controls dialog boxes

and file handling in binary mode only

Date of Submission: November 7, 2010

Submitted By

Gagandeep Sethi

Roll Number: RE37D1B45

BCA-MCA (Term-VII)

Registration# 3010070017

Submitted To

Mr. Akash Bhardwaj

Lecturer in CAP406

Department of Computer

Applications

Lovely Professional University


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COURSE CODE: CAP406

COURSE NAME: Modern Programming Tools & Techniques II

Homework No. 3

PART A

Question#1 Write a Program to print all prime numbers in the range 99 to

9999 in a list box.

Code:using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;

using System.Linq;using System.Text;using System.Windows.Forms;

namespace prime_series1{ publicpartialclassForm1 : Form

{ public Form1()

{

InitializeComponent();}

private void Form1_Load(object sender,EventArgs e)

{

}

privatevoid button1_Click(object sender,EventArgs e){

int range; int k = 2, num; Console.WriteLine("Enter the range ofseries:");


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num = int.Parse(textBox2.Text);range = int.Parse(textBox1.Text);

if (range < num){

MessageBox.Show("Ending Range Mustbe greater than Starting Range","Input Error");

} else

{ do

{ while (k


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Question#2 Write a program to implement function overloading.

Code:

Function Overloading:

When you have multiple methods in a class having the same name but different

signatures (parameters), they are known as overloaded methods.

Following program illustrates function overloading:

using System;using System.Collections.Generic;using System.Linq;using System.Text;

namespace func_overloading


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{ classMy_Class

{

publicvoid Method(Boolean b){

Console.WriteLine("Number in BaseClass is " +b);

} publicvoid Method(string st)

{ Console.WriteLine("String in BaseClass is " +st);

}

} classMy_Derived: My_Class{publicvoid Method(char ch){

Console.WriteLine("Character in DerivedClass is" + ch);

} publicvoid Method(double dob)

{

Console.WriteLine("Double in DerivedClass

is " + dob);}

}

classProgram: My_Derived{

staticvoid Main(string[] args){

My_Derived drive_obj = newMy_Derived();

drive_obj.Method(true);drive_obj.Method("Gagandeep Sethi");drive_obj.Method('C');


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drive_obj.Method(55.567); Console.ReadLine();

}}

}

Explanation:

Here, base class My_Class contains two overloaded methods of named as

Method having arguments of Boolean and String type respectively and

Derived class My_Derived has inherited base class My_Class and it also

contains two methods of same name as the base class contains i.e. Method

having argument of type Char and double and when the object of derived class

is created in main class like:

My_Derived drive_obj = newMy_Derived();drive_obj.Method(true);drive_obj.Method("Gagandeep Sethi");drive_obj.Method('C');drive_obj.Method(55.567);

Then corresponding methods will be called according to their signatures and the

output will be as follows:


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Question#3 Write a Program to copy content of a list box to another list box.

Code:using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;

namespace copy_list{ publicpartialclassForm1 : Form

{ public Form1()

{InitializeComponent();

}

privatevoid button2_Click(object sender,EventArgs e)

{


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listBox1.Items.Add(textBox1.Text);}

privatevoid button1_Click(object sender,EventArgs e)

{

string []a=newstring[100];listBox1.Items.CopyTo(a, 0);listBox2.Items.Add(a[0]);

}

}}

Output:


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Question#4 Write a program to implement namespaces.

Code:

using System;using System.Collections.Generic;using System.Linq;using System.Text;

namespace My_Namespaces{ namespace Inner

{ classProgram

{ publicstaticvoid myMessage()

{ Console.ReadLine("Message from InnerNamespace");

}}


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} classNamespaceCall

{ publicstaticvoid main(string[] args)

{Inner.Program.myMessage();Console.ReadLine();

}

}}

Output:

Question#5 According to you how the System Namespace and System .dll

Answer:

Namespaces are collections of objects, with every Namescape containing different

sets of objects grouped according to functionality. For example, the System.Data


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namespace contains all the classes you will need to interact with data sources.

Without System.Data, it'd be impossible for ASP.NET to function hand-in-hand

with ADO.NET. It contains methods you can use to connect to databases and a few

methods you can use to handle XML files. However if you want ASP.NET to

manipulate XML data, the System.XML Namespace would come in handy.

System.Drawing, another namespace, contain classes you can use to manipulate

images. There are so many Namespaces, it'd be impossible to describe them all in

one tutorial, and it is important that you learn what a Namespace is.

Namespaces are contained in files called assemblies. These files have DLL

extensions. The System Namespace is in System.DLL, but not all namespaces have

DLLs matching their names. For example, System.Web.UI is in System.Web.DLL.

However these DLL files are compiled into the Microsoft Intermediate Language

(MSIL) which is understood by the Common Language Routine (CLR). Therefore

they are different than normal DLLs. These files can be found in the directorywhere the .NET Framework was installed. With the dissambler Ildasm.exe, you

can actually see the classes, functions, etc that these Namespaces contain.

System --> in System.dll

System.Data --> in System.Data.dll

System.Deployment --> System.Deployment.dll

System.Drawing --> System.Drawing.dll

System.Windows.Forms --> System.Windows.Forms.dll

PART B

Question#6 Compare and Contrast the Name and Text Property of textbox

control.

Answer:

Name Property Text Property

Name property represents a unique name

of a Text Box control

Text property of a Text Box represents

the current text of a Text Box control.

It is used to access the control in the code. It is used as value or content of the

text box.

Example code Snippet: Example code Snippet:


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U_Name.Text = "Gagandeep Sethi";

U_Name.Enabled=False;

U_Name.ForeColor="Red";

U_Name.Multiline=True

Where U_Name is the name of TextBox1

and through that name we can access

other properties and methods for the

textBox1

textBox1.Text = "Gagandeep Sethi";

Question#7 Do you feel that a default unnamed global namespace is always

there in a C# program?

Answer:

Whether or not you explicitly declare a namespace in a C# source file, the compiler

adds a default namespace. This unnamed namespace, sometimes called the global

namespace, is present in every file. Any identifier in the global namespace is

available for use in a named namespace.

Question#8 Using rich Text box, create an editor and Open an existing file

using OpenFileDialog box then write some text on that file and save same file

using SaveFileDialog box

Answer:using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;

using System.Text;using System.Windows.Forms;using System.IO;

namespace Gagan_s_Note_Pad{ publicpartialclassForm1 : Form


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{ publicstring file1; public Form1()


}


{

}

private void

openToolStripMenuItem_Click_1(object sender, EventArgse){

int size = -1;

DialogResult result =openFileDialog1.ShowDialog(); // Show the dialog. if (result == DialogResult.OK) // Testresult.

{

string file;file = openFileDialog1.FileName;

try{

richTextBox1.Text =File.ReadAllText(file);

size = richTextBox1.Text.Length;}

catch (IOException){}

} Console.WriteLine(size); //


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Console.WriteLine(result); //


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} publicvoid save()

{

if (file1 == null){

saveAs();}

file1 = openFileDialog1.FileName;

File.WriteAllText(file1,richTextBox1.Text); MessageBox.Show("file saved");

}

privatevoid newToolStripMenuItem_Click(objectsender, EventArgs e)

{ newForm1();

}

private voidexitToolStripMenuItem_Click_1(object sender, EventArgs

e){

Close();}

}}

Output:


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When clicked Open Menu:


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The contents will be fetched from the selected file into the rich text box as:

Edit this content and the same file will be modified by clicking on the save menu

and to create new file with the edited content we have to click to save as option and

give the new name to that file with extension.


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Question#9 Write a program to explore files from disk drives using drive,

directory and file list box controls.

Answer:using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;

using System.IO;

namespace fso_cs{

/// /// Summary description for Form1. /// publicclassForm1 : System.Windows.Forms.Form

{ private System.Windows.Forms.Button button1; private System.Windows.Forms.Button button2; private System.Windows.Forms.Button button3; private System.Windows.Forms.Button button4; private System.Windows.Forms.Button button5; private System.Windows.Forms.Button button6;


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string winDir =System.Environment.GetEnvironmentVariable("windir"); private System.Windows.Forms.ListBox listbox1; /// /// Required designer variable. /// private System.ComponentModel.Containercomponents = null;

public Form1(){

//// Required for Windows Form Designer

support.

//InitializeComponent();

//// TO DO: Add any constructor code after

InitializeComponent call. //

}

///

/// Clean up any resources being used. /// protectedoverridevoid Dispose(bool disposing)

{ if (disposing)

{ if (components != null)

{components.Dispose();

}}

base.Dispose(disposing);}

#region Windows Form Designer generated code ///


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/// Required method for Designer support - donot modify /// the contents of this method with the codeeditor. /// privatevoid InitializeComponent()

{ this.button1 = newSystem.Windows.Forms.Button(); this.button2 = newSystem.Windows.Forms.Button(); this.button3 = newSystem.Windows.Forms.Button(); this.listbox1 = new

System.Windows.Forms.ListBox(); this.button4 = newSystem.Windows.Forms.Button(); this.button5 = newSystem.Windows.Forms.Button(); this.button6 = newSystem.Windows.Forms.Button(); this.SuspendLayout(); //

// button1

//this.button1.Location = new

System.Drawing.Point(216, 32);

this.button1.Name = "button1"; this.button1.Size = newSystem.Drawing.Size(112, 23); this.button1.TabIndex = 1; this.button1.Text = "button1"; this.button1.Click += newSystem.EventHandler(this.button1_Click); //

// button2 //

this.button2.Location = newSystem.Drawing.Point(216, 64);


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this.button2.Name = "button2"; this.button2.Size = newSystem.Drawing.Size(112, 23); this.button2.TabIndex = 2; this.button2.Text = "button2"; this.button2.Click += newSystem.EventHandler(this.button2_Click); //

// button3 //

this.button3.Location = newSystem.Drawing.Point(216, 96); this.button3.Name = "button3"; this.button3.Size = new

System.Drawing.Size(112, 23); this.button3.TabIndex = 3; this.button3.Text = "button3"; this.button3.Click += newSystem.EventHandler(this.button3_Click); //

// listbox1 //

this.listbox1.Location = newSystem.Drawing.Point(24, 24);

this.listbox1.Name = "listbox1"; this.listbox1.Size = newSystem.Drawing.Size(176, 199); this.listbox1.TabIndex = 0; //

// button4 //

this.button4.Location = newSystem.Drawing.Point(216, 128); this.button4.Name = "button4"; this.button4.Size = newSystem.Drawing.Size(112, 23); this.button4.TabIndex = 4; this.button4.Text = "button4"; this.button4.Click += newSystem.EventHandler(this.button4_Click);


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//// button5

//this.button5.Location = new

System.Drawing.Point(216, 160); this.button5.Name = "button5"; this.button5.Size = newSystem.Drawing.Size(112, 23); this.button5.TabIndex = 5; this.button5.Text = "button5"; this.button5.Click += newSystem.EventHandler(this.button5_Click); //

// button6

// this.button6.Location = newSystem.Drawing.Point(216, 192); this.button6.Name = "button6"; this.button6.Size = newSystem.Drawing.Size(112, 23); this.button6.TabIndex = 6; this.button6.Text = "button6"; this.button6.Click += newSystem.EventHandler(this.button6_Click);

//// Form1

//this.AutoScaleBaseSize = new

System.Drawing.Size(5, 13); this.ClientSize = newSystem.Drawing.Size(360, 273); this.Controls.AddRange(newSystem.Windows.Forms.Control[] {this.button6,this.button5,this.button4,this.button3,


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this.button2,this.button1,

this.listbox1}); this.Name = "Form1"; this.Text = "Form1"; this.Load += newSystem.EventHandler(this.Form1_Load); this.ResumeLayout(false);

}#endregion

/// /// The main entry point for the application. ///

[STAThread] staticvoid Main()

{

Application.Run(newForm1());}

private void button6_Click(object sender,System.EventArgs e)

{ //How to obtain list of files (example usesWindows folder). this.listbox1.Items.Clear(); string[] files =Directory.GetFiles(winDir); foreach (string i in files)

{addListItem(i);

}}



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{ //How to read a text file. //try...catch is to deal with a 0 bytefile. this.listbox1.Items.Clear(); StreamReader reader = newStreamReader(winDir + "\\system.ini"); try

{ do

{addListItem(reader.ReadLine());

} while (reader.Peek() != -1);

}

catch{

addListItem("File is empty");}

finally{

reader.Close();

}

}

private void Form1_Load(object sender,System.EventArgs e)

{ this.button1.Text = "Read Text File"; this.button2.Text = "Write Text File"; this.button3.Text = "View FileInformation"; this.button4.Text = "List Drives"; this.button5.Text = "List Subfolders"; this.button6.Text = "List Files";

}


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{ //How to get a list of folders (exampleuses Windows folder).

this.listbox1.Items.Clear(); string[] dirs =Directory.GetDirectories(winDir); foreach (string dir in dirs)

{addListItem(dir);

}

}


{ //Demonstrates how to obtain a list of diskdrives. this.listbox1.Items.Clear(); string[] drives =Directory.GetLogicalDrives();

foreach (string drive in drives){

addListItem(drive);}

}


{ //How to retrieve file properties (exampleuses Notepad.exe). this.listbox1.Items.Clear(); FileInfo FileProps = newFileInfo(winDir +"\\notepad.exe");

addListItem("File Name = " +FileProps.FullName);


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addListItem("Creation Time = " +FileProps.CreationTime);

addListItem("Last Access Time = " +FileProps.LastAccessTime);

addListItem("Last Write TIme = " +FileProps.LastWriteTime);

addListItem("Size = " + FileProps.Length);FileProps = null;

}

privatevoid addListItem(string value){

this.listbox1.Items.Add(value);}


{ //Demonstrates how to create and write to atext file. StreamWriter writer = newStreamWriter("c:\\KBTest.txt");

writer.WriteLine("File created usingStreamWriter class.");

writer.Close(); this.listbox1.Items.Clear();

addListItem("File Written toC:\\KBTest.txt");

}}

}

Question#10 Using rich Text box, create an editor and perform font and color

setting of text using font and color dialog boxes.Code:using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;


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using System.Linq;using System.Text;using System.Windows.Forms;using System.IO;

namespace Gagan_s_Note_Pad{ publicpartialclassForm1 : Form

{ publicstring file1; public Form1()


}


{

}

private voidopenToolStripMenuItem_Click_1(object sender, EventArgse)

{

int size = -1; DialogResult result =openFileDialog1.ShowDialog(); // Show the dialog. if (result == DialogResult.OK) // Testresult.

{ string file;

file = openFileDialog1.FileName; try

{richTextBox1.Text =

File.ReadAllText(file);

size = richTextBox1.Text.Length;


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} catch (IOException)

{}

} Console.WriteLine(size); //


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} private voidsaveToolStripMenuItem_Click_1(object sender, EventArgse)

{save();

} publicvoid save()

{

if (file1 == null){

saveAs();

}

file1 = openFileDialog1.FileName;

File.WriteAllText(file1,richTextBox1.Text); MessageBox.Show("file1 saved");

}

privatevoid newToolStripMenuItem_Click(object

sender, EventArgs e){

newForm1();}

private voidexitToolStripMenuItem_Click_1(object sender, EventArgse)

{Close();

}

privatevoidfontToolStripMenuItem_Click(objectsender, EventArgs e)

{


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if (fontDialog1.ShowDialog() ==DialogResult.OK)

{richTextBox1.Font = fontDialog1.Font;

}}

private voidcolorToolStripMenuItem_Click(object sender, EventArgse)

{ if (colorDialog1.ShowDialog() ==DialogResult.OK)

{

richTextBox1.ForeColor =colorDialog1.Color;

}}

}}

Output:


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-------------------Assignment 3 Ends Here----------------------------------

Assignment3 CAP406

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