C # utility File Store

The example here is C # writing Notepad

First: Solve file read and write problems

1. READ: File-Open Click Time is a new OpenFileDialog prompt box to select a file, read by using the FileStream file stream way

click Method

<span style= "White-space:pre" ></span>openfiledialog dlg = new OpenFileDialog ();             if (dlg. ShowDialog () = = DialogResult.OK)//Determine whether to click on the OK button                 textbox1.text=tools. Filerw.readtext (dlg. Filename,encodinguse);             FName = dlg. safefilename;//Global file name             FilePath = dlg. Filename.substring (0, Dlg. Filename.indexof (FName));//Global file path

FileStream reading method

        <summary>//        //c# file stream read File///</summary>//        <param name= "FilePath" ></param> //        <param name= "readencoding" >{"Default", "UTF-8", "ANSI", "Unicode", "Unicode big Encode"}--0,1, 2, 3,4< /param>        //<returns></returns> public static string ReadText (String filepath,int readencoding)        {            using (FileStream fsread = new FileStream (@FilePath, FileMode.Open))            {                int fslen = ( int) fsread.length;                byte[] Hebyte = new Byte[fslen];                int r = fsread.read (hebyte, 0, hebyte.length);                String Mystr= "";                MyStr = System.Text.Encoding.Default.GetString (hebyte);                                return mystr;            }        }

2. Save: Write directly to the file

<span style= "White-space:pre" ></span>///<summary>//        C # File stream write file, default append Filemode.append, But there's no additional append//</summary>//        <param name= "text" > string to write </param>//        <param Name= "FilePath" > File path + file name </param> public        static void WriteText (String text,string FilePath)        {            byte[] MyByte = System.Text.Encoding.Default.GetBytes (Text);            using (FileStream fswrite = new FileStream (@FilePath, FileMode.Create, FileAccess.Write))            {                Fswrite.write ( MyByte, 0, mybyte.length);}            ;        }

3, Save: Operation with SaveFileDialog and FileStream

SaveFileDialog method

<span style= "White-space:pre" ></span> savefiledialog sfd = new SaveFileDialog (); SfD. Title = "Save as what?"; /SFD. InitialDirectory =filepath;//set Open path SFD. Filter = "txt files (*.txt) |*.txt|xls files (*.xls) |*.xls| All Files (*. *) |*.* ";//Set Optional file Save type SFD. FileName = fname;//set value file name sfd. DEFAULTEXT = "txt";//set value file suffix sfd. AddExtension = True;//<span style= "Font-family:verdana, Geneva, Arial, Helvetica, Sans-serif; font-size:13px; line-height:19.5px; " > Gets or sets a value that indicates whether the file dialog box automatically adds an extension </span> sfd to the filename if the user omits the extension. Restoredirectory = True;//set y or n remenber last file open path if (SFD). ShowDialog () = = DialogResult.OK) {string localfilepath = sfd. Filename.tostring ();//get the dialog save file path string savename= localfilepath.substring (LOCALFILEPATH.L Astindexof ("\ \") + 1);//get file save name tools. Filerw.writetext(TextBox1.Text, FilePath, savename);//write out} 

File Save method

<span style= "White-space:pre" ></span>///<summary>//File Other write//        </summary >//        <param name= "text" > file contents to be written </param>//        <param name= "FilePath" > File path </param >        //<param name= "filename" > file name </param> public        static void WriteText (string text, string FilePath, String FileName)        {            byte[] MyByte = System.Text.Encoding.Default.GetBytes (Text);            string Buffername=filepath+filename;            using (FileStream fswrite = new FileStream (@bufferName, FileMode.Create, FileAccess.Write))            {                Fswrite.write (MyByte, 0, mybyte.length);}            ;        }

C # utility File Store