写入文档的例子
class WriteTextFile { static void Main() { //如果文件不存在，则创建；存在则覆盖 //该方法写入字符数组换行显示 string[] lines = { "first line", "second line", "third line","第四行" }; System.IO.File.WriteAllLines(@"C:\testDir\test.txt", lines, Encoding.UTF8); //如果文件不存在，则创建；存在则覆盖 string strTest = "该例子测试一个字符串写入文本文件。"; System.IO.File.WriteAllText(@"C:\testDir\test1.txt", strTest, Encoding.UTF8); //在将文本写入文件前，处理文本行 //StreamWriter一个参数默认覆盖 //StreamWriter第二个参数为false覆盖现有文件，为true则把文本追加到文件末尾 using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"C:\testDir\test2.txt",true)) { foreach (string line in lines) { if (!line.Contains("second")) { file.Write(line);//直接追加文件末尾，不换行 file.WriteLine(line);// 直接追加文件末尾，换行 } } } } }自己写的在 windows mobile 6.1里面测试
#region 插入txt\ string filename = "test.txt"; private void writetxt(EPC txtepc) { using (StreamWriter sw = new StreamWriter(filename, true))//为false替换文本里的内容 true另起一行 { sw.WriteLine(txtepc.id, txtepc.count); } } #endregion读取txt文本文档里的内同
class ReadTextFile { static void Main() { //直接读取出字符串 string text = System.IO.File.ReadAllText(@"C:\testDir\test1.txt"); Console.WriteLine(text); //按行读取为字符串数组 string[] lines = System.IO.File.ReadAllLines(@"C:\testDir\test.txt"); foreach (string line in lines) { Console.WriteLine(line); } //从头到尾以流的方式读出文本文件 //该方法会一行一行读出文本 using (System.IO.StreamReader sr = new System.IO.StreamReader(@"C:\testDir\test.txt")) { string str; while ((str = sr.ReadLine()) != null) { Console.WriteLine(str); } } Console.Read(); } }吧文本文档里的提交交到数据库里面
private void tj_Click(object sender, EventArgs e) { using (StreamReader reader = new StreamReader(filename)) { using (SqlConnection con = new SqlConnection("server=192.168.1.247;user id=sa;pwd=guanke2802;database=seuic"))//建立连接实例 { con.Open(); SqlCommand cmd = new SqlCommand(); string str; while ((str = reader.ReadLine()) != null) { StringBuilder strsql = new StringBuilder();//定义对象实例 strsql.Append("insert into biaoqian(id)"); //定义插入语句 strsql.Append("values("); strsql.Append("'" + str + "'"); //strsql.Append("'" + count.ToString() + "'"); strsql.Append(")"); //string sql = string.Format("Select top 1 * from biaoqian where id='{0}'", id); cmd.CommandText = strsql.ToString(); cmd.Connection = con; cmd.ExecuteNonQuery();//执行sql语句 } } } }
转载于:https://www.cnblogs.com/luckystar2013/archive/2013/04/22/3036755.html
相关资源：c# 读取txt文件中特定内容后的文字