Creating sample Notepad Application using C#

Here we are creating Notepad Application using C# with following functionality.

File: New,Open,Save,Print,Exit

Edit:Undo,Cut,Copy,Paste,Delete,Find,Select All,Date/Time

Format:Font,Color

Help:About Notepad X

First Open New Window Form Application in Visual studio.

In design add MenuStrip on the top and add menu items.You can also define shortcut for menu items by right clicking on item >Go to properties >ShortCutKeys

Add RichTextBox to the form. In our example we named it as txtcontent.

Now add the following dialog from Toolbox.

saveFileDialog

openFileDialog

fontDialog

colorDialog

printDialog

Code :

       

For font and color

private void fontToolStripMenuItem_Click(object sender, EventArgs e)

        {

            fontDialog1.ShowDialog();

            txtcontent.Font = fontDialog1.Font;

        }

        

private void colorToolStripMenuItem_Click(object sender, EventArgs e)

        {

            colorDialog1.ShowDialog();

            txtcontent.ForeColor = colorDialog1.Color;

        }

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For Undo Cut,Copy,Paste,Delete,Select All and Date/Time

private void toolStripMenuItem1_Click(object sender, EventArgs e)

        {

            txtcontent.Undo();

        }

 private void cutToolStripMenuItem_Click(object sender, EventArgs e)

        {

            txtcontent.Cut();

        }

private void copyToolStripMenuItem_Click(object sender, EventArgs e)

        {

            txtcontent.Copy();

        }

private void pasteToolStripMenuItem_Click(object sender, EventArgs e)

        {

            txtcontent.Paste();

        }

private void deleteToolStripMenuItem_Click(object sender, EventArgs e)

        {

            txtcontent.SelectedText="";

        }

private void selectAlllToolStripMenuItem_Click(object sender, EventArgs e)

        {

            txtcontent.SelectAll();

        }

private void dateTimeToolStripMenuItem_Click(object sender, EventArgs e)

        {

           txtcontent.AppendText(DateTime.Now.ToString());

        }

-----------------------------------------------------------------

New

private void newToolStripMenuItem_Click(object sender, EventArgs e)

        {

            txtcontent.Text = "";

        }

Open

        

private void openToolStripMenuItem_Click(object sender, EventArgs e)

        {

            openFileDialog1.ShowDialog();

//Now it show open dialog box.

//Read the filename selected by the user with in open file dialog box.

                string fName = openFileDialog1.FileName;

                //Read the data by using StreamReader class

                if (fName != "")

                {

                    StreamReader sr = new StreamReader(fName);

                    txtcontent.Text = sr.ReadToEnd();

                    sr.Close();

                }

          

        }

Save

private void saveCtrlSToolStripMenuItem_Click(object sender, EventArgs e)

        {

            saveFileDialog1.ShowDialog();

            string fName = saveFileDialog1.FileName;

            if (fName != "")

            {

                StreamWriter sw = new StreamWriter(fName);

                sw.Write(txtcontent.Text);

                sw.Flush();

                sw.Close();

            }

        }

For Printing

private void printToolStripMenuItem_Click(object sender, EventArgs e)

        {

            printDialog1.ShowDialog();

        }

Exit

private void exitToolStripMenuItem_Click(object sender, EventArgs e)

        {

            Application.Exit();

        }

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About Notepad X

Add > New Item > About Box

Now go to properties and open AssemblyInfo.cs

Edit Information here as shown below.

In Main form (here Form1.cs) add following code for clicking action.

private void aboutNotepadXToolStripMenuItem_Click(object sender, EventArgs e)

        {

            About abt = new About();

            abt.Show();

        }

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For find functionality, Click Here
http://futurextech.blogspot.com/2013/12/implementing-find-function-in-sample.html

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