need a code for note pad application c# windows application

1) The application is just a simple application with GUI and a TextBox. The TextBox control (in all of the frameworks for example, Windows Presentation Foundation and Windows Forms) allows you to allow users to edit the text. You can allow the users to write more text in the TextBox, they would assume it is just a Notepad!

 

2) The text in the TextBox can be captured by calling the Text property. Like this,

string data = myTextBox.Text; 

Then you can call the functions of string class on the data object to find whether there are those words in the data entered by the user or not.