edit.aspx.cs

这个源代码是我在没有参考任何现成的代码的情况下一个字母一个字母敲进去的.目前实现了创建文件,读写文件的操作,暂时不支持子目录、长文件名、文件删除、重命名等操作。

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;

namespace FTP
{
	public class edit : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Header;
		protected System.Web.UI.WebControls.Button CancelBtn;
		protected System.Web.UI.WebControls.Button SaveBtn;
		protected System.Web.UI.WebControls.HyperLink homeLink;
		protected System.Web.UI.WebControls.TextBox SaveAsTxt;
		protected System.Web.UI.WebControls.Button SaveAs;
		protected System.Web.UI.WebControls.TextBox CodeText;
	
		private void Page_Load(object sender, System.EventArgs e)
		{			
			// page requires a querystring like: File=somePath
			if(!Page.IsPostBack)
			{				
				// check for the File querystring parameter
				if(Request.QueryString["File"] != null)
				{
					try
					{
						// read the text from the file
						FileStream fs=new FileStream(Server.MapPath(Server.UrlDecode(Request.QueryString["File"].ToString())),FileMode.Open,FileAccess.Read);
						StreamReader sr = new StreamReader(fs,System.Text.Encoding.Default);
						// fill the CodeText text field with the file text
						CodeText.Text = sr.ReadToEnd().ToString();
						sr.Close();
						// set the header appropriately
						Header.Text = "Editing file: <b>" + Request.QueryString["File"].ToString() + "</b>";
					}
					catch(Exception ex)
					{
						FTP.ReportError("Could not open file for editing", ex.ToString(), "If the file has just been created, wait a few seconds for Windows to release the file lock");
					}
				}
				else
					Response.Write("No file parameter passed to page");
			}
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.SaveBtn.Click += new System.EventHandler(this.SaveBtn_Click);
			this.CancelBtn.Click += new System.EventHandler(this.CancelBtn_Click);
			this.SaveAs.Click += new System.EventHandler(this.SaveAs_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void SaveBtn_Click(object sender, System.EventArgs e)
		{			
			try
			{
				FileInfo file = new FileInfo(Server.MapPath(Server.UrlDecode(Request.QueryString["File"].ToString())));				
				StreamWriter sw = file.CreateText();
				// write the contents of the text field to the file
				sw.Write(CodeText.Text);
				sw.Close();	
				// notify user of success
				Response.Write("<script>alert('File saved successfully\\nName: " + Request.QueryString["File"].ToString() + "\\nTime: " + DateTime.Now.ToString() + "'); document.location=\"edit.aspx?File=" + Request.QueryString["File"].ToString() + "\";</script>");
			}
			catch(Exception ex)
			{
				FTP.ReportError("Could not save file.", ex.ToString(), "Press back and try again");
			}
		}

		private void CancelBtn_Click(object sender, System.EventArgs e)
		{
			// back to default.aspx, no save performed
			Response.Redirect("default.aspx");	
		}

		private void SaveAs_Click(object sender, System.EventArgs e)
		{
			if(this.SaveAsTxt.Text == "")	// user gave no filename to save as
				Response.Write("<script>alert('No filename to Save As!'); </script>");
			else
			{
				try
				{
					FileInfo file = new FileInfo(Server.MapPath(Session["Path"].ToString() + this.SaveAsTxt.Text));				
					StreamWriter sw = file.CreateText();
					// write the contents of the text field to the file
					sw.Write(CodeText.Text);
					sw.Close();																
					// notify user of success
					Response.Write("<script>alert('File saved successfully\\nName: " + SaveAsTxt.Text + "\\nTime: " + DateTime.Now.ToString() + "'); document.location=\"edit.aspx?File=" + Server.UrlEncode(Session["Path"].ToString() + SaveAsTxt.Text) + "\";</script>");
				}
				catch(Exception ex)
				{
					FTP.ReportError("Could not save file.", ex.ToString(), "It is sufficient to enter a file name (not the complete path) when using Save As, the file is saved in the current directory.");
				}
			}
		}
	}
}