原文: View Code View Code
文/嶽永鹏
WPF 中读取和写入TxT 是经常性的操作,本篇将从详细演示WPF如何读取和写入TxT文件。
首先,TxT文件希望逐行读取,并将每行读取到的数据作为一个数组的一个元素,因此需要引入List<string> 数据类型。且看代码:
public ListOpenTxt(TextBox tbx) { List txt = new List (); OpenFileDialog openFile = new OpenFileDialog(); openFile.Filter = "文本文件(*.txt)|*.txt|(*.rtf)|*.rtf"; if (openFile.ShowDialog() == true) { tbx.Text = ""; using (StreamReader sr = new StreamReader(openFile.FileName, Encoding.Default)) { int lineCount = 0; while (sr.Peek() > 0) { lineCount++; string temp = sr.ReadLine(); txt.Add(temp); } } } return txt; }
其中
1 using (StreamReader sr = new StreamReader(openFile.FileName, Encoding.Default)) 2 { 3 int lineCount = 0; 4 while (sr.Peek() > 0) 5 { 6 lineCount++; 7 string temp = sr.ReadLine(); 8 txt.Add(temp); 9 }10 }
StreamReader 是以流的方式逐行将TxT内容保存到List<string> txt中。
其次,对TxT文件的写入操作,也是将数组List<string> 中的每个元素逐行写入到TxT中,并保存为.txt文件。且看代码:
1 SaveFileDialog sf = new SaveFileDialog(); 2 sf.Title = "Save text Files"; 3 sf.DefaultExt = "txt"; 4 sf.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*"; 5 sf.FilterIndex = 1; 6 sf.RestoreDirectory = true; 7 if ((bool)sf.ShowDialog()) 8 { 9 using (FileStream fs = new FileStream(sf.FileName, FileMode.Create))10 {11 using (StreamWriter sw = new StreamWriter(fs, Encoding.Default))12 {13 for (int i = 0; i < txt.Count; i++)14 {15 sw.WriteLine(txt[i]);16 }17 }18 }19 20 }
而在这之中,相对于读入TxT文件相比,在写的时候,多用到了 FileStream类。
posted on 2014-07-14 16:58 阅读( ...) 评论( ...)