從TextBox控件中寫入到txt文本
Code
//從testbox中寫入到txt文本
????????protected?void?Button5_Click(object?sender,?EventArgs?e)
????????{
????????????string?text?=?txtContent.Text;
????????????if?(!string.IsNullOrEmpty(text))
????????????{
????????????????//指定文件的完整路徑
????????????????string?fileName?=?Server.MapPath("~/txt/test.txt");
????????????????//判斷該文件是否存在
????????????????if?(File.Exists(fileName))
????????????????{
????????????????????//如果存在，就先刪掉
????????????????????File.Delete(fileName);
????????????????}
????????????????else
????????????????{
????????????????????//創建一個文件操作的流
????????????????????FileStream?stream?=?new?FileStream(fileName,?FileMode.Create);
????????????????????//創建一個寫操作流
????????????????????StreamWriter?writer?=?new?StreamWriter(stream,?Encoding.UTF8);
????????????????????//進行寫操作
????????????????????writer.Write(text);
????????????????????//清空控件中的文字
????????????????????txtContent.Text?=?string.Empty;
????????????????????//關閉流，不然出現異常
????????????????????writer.Close();
????????????????????stream.Close();
????????????????}
????????????}
????????????else
????????????{
????????????????Response.Write("<script>alert(\"空的列！\")</script>");
????????????}
????????}
然后再從生成的test.txt中讀取數據，顯示到TextBox控件中（方法同理）
Code
//讀取文本到textbox中顯示
????????protected?void?Button6_Click(object?sender,?EventArgs?e)
????????{
????????????string?fileName?=?Server.MapPath("~/txt/test.txt");
????????????if?(File.Exists(fileName))
????????????{
????????????????FileStream?stream?=?new?FileStream(fileName,?FileMode.Open);
????????????????StreamReader?reader?=?new?StreamReader(stream,?Encoding.UTF8);
????????????????txtContent.Text?=?reader.ReadToEnd();
????????????????reader.Close();
????????????????stream.Close();
????????????}
????????????else
????????????{
????????????????Response.Write("<script>alert(\"沒有test.txt文件！\")</script>");
????????????}
????????}

轉載于:https://www.cnblogs.com/kingfly/archive/2009/09/16/1567503.html

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