WinForm Learning----Open a File dialog box and place the contents of the file in a text box

            OpenFileDialog Ofg = new OpenFileDialog ();            Ofg. title = "DDD";//Set Dialog Caption            Ofg. MultiSelect = true;//The Settings dialog box allows you to select multiple            ofg. InitialDirectory =;//Set the initial directory Ofg of the dialog box            . Filter =//Set file type            Ofg. ShowDialog ();                                   String path = Ofg. FileName;            if (Path = = "")            {                return;            }            using (FileStream isread = new FileStream (path,filemode.openorcreate,fileaccess.read))            {                             byte[] buffer = new BYTE[1024*1024*5];                Sets the number of bytes read to              int r = isread. Read (Buffer,0,buffer. Length);              TextBox1.Text = Encoding.Default.GetString (buffer,0,r);            }

Small knowledge Point:  combobox. Items.clear ()  name: CBO ....  SelectedIndexChanged  combobox.selectitem.tostring ()  comboBox1.SelectedItem.ToString (). Split (new char[] {' Month '}, stringsplitoptions.removeemptyentries);  ListBox: Direct Item or code Add Item  listbox.selectedindex  listbox_doubleclick  path. GetFileName  Double-click to play Music:  SoundPlayer sp = new SoundPlayer ();  Sp. Soundlocation = ...  Sp. Play ();

WinForm Learning----Open a File dialog box and place the contents of the file in a text box