C # File operations (upload, download, delete, file list ...)

Using System.IO;

1. File Upload

----------

The following points:

HTML section:

<form id= "Form1" runat= "Server" method= "POST" enctype= "Multipart/form-data" >

<input id= "FileUpload" type= "file" runat= "server"/><br/>

Background CS Partial button Event

String strfilefullname = System.IO.Path.GetFileName (this. FileUpLoad.PostedFile.FileName);

This. FileUpLoad.PostedFile.SaveAs (Server.MapPath ("./xmlzip/") + Strfilefullname);

2. File download

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ListBox SelectedIndexChanged Event settings Related download connection

protected void lst_DownLoadFileList_SelectedIndexChanged(object sender, EventArgs e)
　　{
　　　　try
　　　　{
　　　　　　string strJS = "window.open('xmlzip/";
　　　　　　strJS += this.lst_DownLoadFileList.SelectedItem.Text.Trim();
　　　　　　strJS += "'); return false; ";
　　　　　　this.imgbtn_DownLoadFile.Attributes.Add("onclick", strJS);
　　　　}
　　　　catch (Exception ex)
　　　　{
　　　　　　ex.ToString();
　　　　}
　　}

Or you can change the label of the text value to achieve a click to implement the file download super connection

This. Label1.Text = "<a href=\" xmlzip/a.rar\ ">a.rar</a>"

3. File deletion

---------

string strFilePath = Server.MapPath("../CountryFlowMgr/xmlzip/"+this.lst_DownLoadFileList.SelectedItem.Text.Trim());
if (File.Exists(strFilePath))
{
　 File.Delete(strFilePath);
　 if (File.Exists(strFilePath))
　 {
Response.Write("ok");
　 }
　 else
　 {
　　　　Response.Write("ok");
　 }
}