页面代码：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD><title>Upload</title><meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.0"><meta name="CODE_LANGUAGE" content="Visual Basic 7.0"><meta name="vs_defaultClientScript" content="JavaScript"><meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"><script language="javascript"> function addFiles(oContainer) { var sLineHTML="<div><input type='file' name='files' style='width:300'><input type='button' οnclick='javascript:delFileInput(this)' value='删除'></div>"; oContainer.insertAdjacentHTML('beforeEnd',sLineHTML); } function delFileInput(oInputButton) { var divToDel=oInputButton.parentNode; divToDel.parentNode.removeChild(divToDel); }</script></HEAD><body MS_POSITIONING="GridLayout"><form id="Form1" method="post" runat="server" encType="multipart/form-data"><table align="center"><tr><td align="center"><h1><asp:label id="Title" Runat="server"></asp:label></h1></td></tr><tr><td id="TD"><INPUT style="WIDTH: 300px" type="file" name="Files"></td></tr><tr><td><asp:label id="strStatus" runat="server" BorderColor="White" BorderStyle="None" Font-Size="9pt"Font-Bold="True" Font-Names="宋体" Width="500px"></asp:label></td></tr><tr><td align="center"><BUTTON style="WIDTH: 79px; HEIGHT: 20px" οnclick="javascript:addFiles(TD);" type="button">继续添加</BUTTON><asp:Button ID="btnUpLoad" Runat="server" Text=" 上 传 " EnableViewState="False" CausesValidation="true"></asp:Button><asp:Button id="Button1" Runat="server" CausesValidation="true" EnableViewState="False" Text="上传保存到数据库"></asp:Button></td></tr><TR><TD align="center"><asp:DataGrid id="DataGrid1" runat="server" Width="100%" AutoGenerateColumns="False" ShowHeader="False"GridLines="None"><Columns><asp:HyperLinkColumn DataNavigateUrlField="url" DataTextField="file_name"></asp:HyperLinkColumn><asp:ButtonColumn Text="删除" CommandName="Delete"><ItemStyle Wrap="False"></ItemStyle></asp:ButtonColumn></Columns></asp:DataGrid></TD></TR></table> </form></body></HTML>
后台代码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 pmsx.WebPrint{/// <summary>/// file 的摘要说明。/// </summary>public class file : System.Web.UI.Page{protected System.Web.UI.WebControls.Label strStatus;protected System.Web.UI.WebControls.Label Title;protected System.Web.UI.WebControls.Button Button1;protected System.Web.UI.WebControls.Button btnUpLoad;protected System.Web.UI.WebControls.DataGrid DataGrid1;public string pid;private void Page_Load(object sender, System.EventArgs e){// 在此处放置用户代码以初始化页面Title.Text = "<h3>多文件上传</h3>";pid="DJS2007001";if(!IsPostBack)GridBind(pid);
}public void GridBind(string id){string sql="select *,'../aspx/xmfjxz.aspx?file=../upfile/'+phy_file_name as url from t_add_file where pro_id='"+ id +"'";DataSet ds=csqlcon.getdataset(sql);this.DataGrid1.DataSource=ds.Tables[0];DataGrid1.DataKeyField="id";DataGrid1.DataBind();}#region Web 窗体设计器生成的代码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.btnUpLoad.Click += new System.EventHandler(this.btnUpLoad_Click);this.Button1.Click += new System.EventHandler(this.Button1_Click);this.DataGrid1.ItemCreated += new System.Web.UI.WebControls.DataGridItemEventHandler(this.DataGrid1_ItemCreated);this.DataGrid1.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_DeleteCommand);this.Load += new System.EventHandler(this.Page_Load);
}#endregion/// <summary>/// 上传附件/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnUpLoad_Click(object sender, System.EventArgs e){
System.Web.HttpFileCollection files = System.Web.HttpContext.Current.Request.Files;System.Text.StringBuilder strMsg = new System.Text.StringBuilder("上传的文件信息分别为：<hr color=red>");int fileCount;int filecount = files.Count;try{for(fileCount = 0;fileCount<files.Count;fileCount++){//定义访问客户端上传文件的对象System.Web.HttpPostedFile postedFile = files[fileCount];string fileName, fileExtension;//取得上传得文件名,文件名加入时分秒//fileName = System.IO.Path.GetFileName(postedFile.FileName);fileName=Path.GetFileNameWithoutExtension(postedFile.FileName)+DateTime.Now.ToString("yyyyMMddssffmm")+Path.GetExtension(postedFile.FileName);if(fileName != String.Empty){//取得文件的扩展名fileExtension = System.IO.Path.GetExtension(fileName);//上传的文件信息strMsg.Append("上传的文件类型：" + postedFile.ContentType.ToString() + "<br/>");strMsg.Append("客户端文件地址：" + postedFile.FileName + "<br/>");strMsg.Append("上传文件的文件名：" + fileName + "<br/>");strMsg.Append("上传文件的扩展名：" + fileExtension + "<br/><hr color=red>");//保存到指定的文件夹postedFile.SaveAs(Server.MapPath("../upfile/") + fileName);}
}strStatus.Text = strMsg.ToString();GridBind(pid);
}catch(System.Exception error){strStatus.Text = error.Message;
}}/// <summary>/// 上传附件并保存数据库/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void Button1_Click(object sender, System.EventArgs e){System.Web.HttpFileCollection files = System.Web.HttpContext.Current.Request.Files;System.Text.StringBuilder strMsg = new System.Text.StringBuilder("上传的文件信息分别为：<hr color=red>");int fileCount;int filecount = files.Count;try{for(fileCount = 0;fileCount<files.Count;fileCount++){//定义访问客户端上传文件的对象System.Web.HttpPostedFile postedFile = files[fileCount];string fileName, fileExtension;//取得上传得文件名,文件名加入时分秒string fileNameExc = System.IO.Path.GetFileName(postedFile.FileName);fileName=Path.GetFileNameWithoutExtension(postedFile.FileName)+DateTime.Now.ToString("yyyyMMddssffmm")+Path.GetExtension(postedFile.FileName);if(fileName != String.Empty){//取得文件的扩展名fileExtension = System.IO.Path.GetExtension(fileName);//上传的文件信息strMsg.Append("上传的文件类型：" + postedFile.ContentType.ToString() + "<br/>");strMsg.Append("客户端文件地址：" + postedFile.FileName + "<br/>");strMsg.Append("上传文件的文件名：" + fileName + "<br/>");strMsg.Append("上传文件的扩展名：" + fileExtension + "<br/><hr color=red>");//保存到指定的文件夹postedFile.SaveAs(Server.MapPath("../upfile/") + fileName);}string sql="insert into t_add_file (PRO_ID,FILE_NAME,PHY_FILE_NAME)VALUES('"+pid+"','"+fileNameExc+"','"+fileName+"')";csqlcon.executesql(sql);}strStatus.Text = strMsg.ToString();GridBind(pid);
}catch(System.Exception error){strStatus.Text = error.Message;
}}
private void DataGrid1_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e){stringsql = "Delete From t_add_file Where id="+this.DataGrid1.DataKeys[e.Item.ItemIndex].ToString();
try{//删除数据DataSet ds=csqlcon.getdataset("select * from t_add_file where id="+this.DataGrid1.DataKeys[e.Item.ItemIndex].ToString());string pfname=ds.Tables[0].Rows[0]["phy_file_name"].ToString();string url=Server.MapPath("../upfile/")+ pfname;if (System.IO.File.Exists(url) ){System.IO.File.Delete(Server.MapPath("../upfile/") + pfname);}csqlcon.executesql(sql);
}catch{strStatus.Text="删除失败!";}GridBind(pid);}
private void DataGrid1_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e){if(e.Item.ItemType==ListItemType.Item || e.Item.ItemType==ListItemType.AlternatingItem){LinkButton link = (LinkButton)e.Item.Cells[1].Controls[0];link.Attributes.Add("onclick","javascript:return window.confirm('是否要删除此附件？');");}}
}}
