c# .net visual studio, help and thanks

For this assignment, you will be creating a simple search program. Your Windows Forms program will allow a user to browse for a text file located on disk. Once a file is selected, the user will enter a keyword or a sentence as input to search for inside the selected file. The program will display all of the lines of text in the file that contain that keyword/sentence in a ListBox control. Your interface should contain the following controls: A browse Button for selecting a text file to search in A Label and TextBox for entering the keyword/sentence A search Button A result ListBox to display the lines where the keyword/sentence was found