I want to write a scanning function?

Question

Hello! I would like to write a file search application, so anyone got this experience? The requirement is listed as following: Function 1: Seach Known Filename 1) A textbox to input filename, e.g. mydoc.doc 2) A button which is named as "Search" 3) A label will display the searching result, e.g. File not found/File is located at d:/sample 4) A progressBar is used for displaying the searching progress Function 2: Search Know extension 1) A textbox to file extension, e.g. *.doc 2) A button which is named as "Search" 3) A richTextBox will display the searching result, e.g. File not found/File is located at d:/sample 4) A progressBar is used for displaying the searching progress Any body got the sample coding or write the sample coding for me? Thanks!