filestreamreadtext.aspx.cs

C#实现的文件流操作,很适合初学者对于基本方法的理解和学习,程序虽简单,却也说明问题.

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Text;
namespace AspFileOp
{
	/// <summary>
	/// FileStreamReadText 的摘要说明。
	/// </summary>
	public class FileStreamReadText : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Button btnRead;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.HtmlControls.HtmlInputFile FileSelect;
		protected System.Web.UI.WebControls.Label lblFile;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.btnRead.Click += new System.EventHandler(this.btnRead_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void btnRead_Click(object sender, System.EventArgs e)
		{
			//打开文本文件
			string strFileName = FileSelect.PostedFile.FileName;
			if(Path.GetFileName(strFileName)=="")
				return;
			FileStream fs = new FileStream(strFileName,FileMode.Open,FileAccess.Read);
			StreamReader sr = new StreamReader(fs,Encoding.Default);
			StringBuilder output = new StringBuilder();
			string rl;
			while((rl=sr.ReadLine())!=null)
			{
				output.Append(rl+"<br>");
			}
			sr.Close();
			fs.Close();
			lblFile.Text = output.ToString();
		}
	}
}