ASP.NET上传文件代码!!怎么写??比如说:上传图片
发布网友
发布时间：2022-04-27 10:36
共3个回答
热心网友
时间：2022-04-27 12:06
我修改了一天时间.终于找到门路了。呵呵
ACCESS中存放文件内容的字段类型为:OLE对象
SQL中存放文件内容的字段类型为:image
此代码为上传文件代码.梢后整理发布下载文件代码
代码设计实现功能:asp.NET上传文件到指定文件夹,ACCESS数据库,SQL数据库代码
已经测试文件格式 .TXT,JPG..MDB.GIF
*/
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.Data.OleDb;
using System.Data.SqlClient;
namespace WebApplication1.ManageFile
{
/// <summary>
/// ManageUploadFile 的摘要说明。
/// </summary>
public class ManageUploadFile : System.Web.UI.Page
{
protected System.Web.UI.WebControls.DropDownList DropDownList1;
protected System.Web.UI.WebControls.Button Button2;
protected System.Web.UI.HtmlControls.HtmlInputFile file1;
protected System.Web.UI.WebControls.TextBox TextBox1;
protected System.Web.UI.WebControls.CheckBox CheckBox1;
protected System.Web.UI.WebControls.Button Button4;
protected System.Web.UI.WebControls.Button Button5;
protected System.Web.UI.WebControls.Button Button3;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
}
#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.Button2.Click += new System.EventHandler(this.Button2_Click);
this.Button3.Click += new System.EventHandler(this.Button3_Click);
this.Button4.Click += new System.EventHandler(this.Button4_Click);
this.Button5.Click += new System.EventHandler(this.Button5_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void Button1_ServerClick(object sender, System.EventArgs e)
{
if(file1.PostedFile.FileName!="")
{
if(CheckBox1.Checked)
{
}
else
{
//上传文件到数据库中
string sUploadFileName=file1.PostedFile.FileName;
string strUploadFile=Server.MapPath(".")+"\\"+DropDownList1.SelectedItem.Text.ToString()+"\\";
sUploadFileName=sUploadFileName.Substring(sUploadFileName.LastIndexOf("\\")).Replace("\\","");
string sUploadFilePath=strUploadFile+sUploadFileName;
int sUploadFileLength=file1.PostedFile.ContentLength;
string sUploadFileType=file1.PostedFile.ContentType.ToString();
//AppDomain.CurrentDomain.BaseDirectory.ToString()站点跟目录
//file1.PostedFile.SaveAs(sUploadFilePath);
System.Byte[] Docbuffer = new byte[sUploadFileLength];
Stream objStream = file1.PostedFile.InputStream;
objStream.Read(Docbuffer,0,sUploadFileLength);
string DbName=Server.MapPath(".")+"\\DataBase\\HtmlFile.mdb";
string ConnectionString ="PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source=" + DbName;
string AccessSqlString="Insert Into UploadFiles(UploadFileName,UploadFileType,UploadFilePath,UploadFileLength,UploadFileContent) Values('" +sUploadFileName+ "','"+sUploadFileType+ "','" +sUploadFilePath+ "',"+sUploadFileLength+ ","+ Docbuffer + ")";
OleDbConnection myConnection =new OleDbConnection(ConnectionString);
myConnection.Open();
OleDbCommand myCommand =new OleDbCommand(AccessSqlString,myConnection);
myCommand.ExecuteNonQuery();
myConnection.Close();
string strUpfileResult="上传文件到数据库成功\r\n";
strUpfileResult=strUpfileResult+"文件名"+sUploadFileName+"\r\n";
strUpfileResult=strUpfileResult+"文件大小"+sUploadFileLength+"\r\n";
strUpfileResult=strUpfileResult+"文件格式"+sUploadFileType+"\r\n";
TextBox1.Text=strUpfileResult;
}
}
}
private void Button2_Click(object sender, System.EventArgs e)
{
string strCurrentDirectory=Server.MapPath(".");
DirectoryInfo di=new DirectoryInfo(strCurrentDirectory);
int dtotal=0;
if(DropDownList1.Items.Count!=0)
{
for(int j=DropDownList1.Items.Count-1;j>=0;j--)
{
DropDownList1.Items.RemoveAt(j);
}
}
for(int i=0;i<di.GetDirectories().Length;i++)
{
//subd=subd+"<br>"+di.GetDirectories().GetValue(i);
dtotal=dtotal+1;
DropDownList1.Items.Add(di.GetDirectories().GetValue(i).ToString());
}
}
private void Button3_Click(object sender, System.EventArgs e)
{
string sUploadFileName=file1.PostedFile.FileName;
string strUploadFile=Server.MapPath(".")+"\\"+DropDownList1.SelectedItem.Text.ToString()+"\\";
sUploadFileName=sUploadFileName.Substring(sUploadFileName.LastIndexOf("\\")).Replace("\\","");
string sPath=strUploadFile+sUploadFileName;
//AppDomain.CurrentDomain.BaseDirectory.ToString()站点跟目录
file1.PostedFile.SaveAs(sPath);
string sUploadFileLength=file1.PostedFile.ContentLength.ToString();
string sUploadFileType=file1.PostedFile.ContentType.ToString();
string strUpfileResult="上传文件成功\r\n";
strUpfileResult=strUpfileResult+"文件名"+sUploadFileName+"\r\n";
strUpfileResult=strUpfileResult+"文件大小"+sUploadFileLength+"\r\n";
strUpfileResult=strUpfileResult+"文件格式"+sUploadFileType+"\r\n";
TextBox1.Text=strUpfileResult;
}
private void Button4_Click(object sender, System.EventArgs e)
{
//上传文件到数据库中
string sUploadFileName=file1.PostedFile.FileName;
string strUploadFile=Server.MapPath(".")+"\\"+DropDownList1.SelectedItem.Text.ToString()+"\\";
sUploadFileName=sUploadFileName.Substring(sUploadFileName.LastIndexOf("\\")).Replace("\\","");
string sUploadFilePath=strUploadFile+sUploadFileName;
int sUploadFileLength=file1.PostedFile.ContentLength;
string sUploadFileType=file1.PostedFile.ContentType.ToString();
//AppDomain.CurrentDomain.BaseDirectory.ToString()站点跟目录
//file1.PostedFile.SaveAs(sUploadFilePath);
System.Byte[] Docbuffer = new byte[sUploadFileLength];
Stream objStream = file1.PostedFile.InputStream;
objStream.Read(Docbuffer,0,sUploadFileLength);
string DbName=Server.MapPath(".")+"\\DataBase\\HtmlFile.mdb";
string ConnectionString ="PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA Source=" + DbName;
//string AccessSqlString="Insert Into UploadFiles(UploadFileName,UploadFileType,UploadFilePath,UploadFileLength) Values('" +sUploadFileName+ "','"+sUploadFileType+ "','" +sUploadFilePath+ "',"+sUploadFileLength+")";
string AccessSqlString="Insert Into UploadFiles(UploadFileName,UploadFileType,UploadFilePath,UploadFileLength,UploadFileContent) Values('" +sUploadFileName+ "','"+sUploadFileType+ "','" +sUploadFilePath+ "',"+sUploadFileLength+ ",'"+ Docbuffer + "')";
OleDbConnection myConnection =new OleDbConnection(ConnectionString);
myConnection.Open();
OleDbCommand myCommand =new OleDbCommand(AccessSqlString,myConnection);
myCommand.ExecuteNonQuery();
myConnection.Close();
string strUpfileResult="上传文件到数据库成功\r\n";
strUpfileResult=strUpfileResult+"上传文件名"+sUploadFileName+"\r\n";
strUpfileResult=strUpfileResult+"上传文件大小"+sUploadFileLength+"\r\n";
strUpfileResult=strUpfileResult+"上传文件路径"+sUploadFilePath+"\r\n";
strUpfileResult=strUpfileResult+"上传文件格式"+sUploadFileType+"\r\n";
TextBox1.Text=strUpfileResult;
}
private void Button5_Click(object sender, System.EventArgs e)
{
//上传文件到数据库中
string sUploadFileName=file1.PostedFile.FileName;
string strUploadFile=Server.MapPath(".")+"\\"+DropDownList1.SelectedItem.Text.ToString()+"\\";
sUploadFileName=sUploadFileName.Substring(sUploadFileName.LastIndexOf("\\")).Replace("\\","");
string sUploadFilePath=strUploadFile+sUploadFileName;
int sUploadFileLength=file1.PostedFile.ContentLength;
string sUploadFileType=file1.PostedFile.ContentType.ToString();
//AppDomain.CurrentDomain.BaseDirectory.ToString()站点跟目录
//file1.PostedFile.SaveAs(sUploadFilePath);
System.Byte[] Docbuffer = new byte[sUploadFileLength];
Stream objStream = file1.PostedFile.InputStream;
objStream.Read(Docbuffer,0,sUploadFileLength);
//string strCon ="Initial Catalog=Northwind;Data Source=localhost;Integrated Security=SSPI;";
//UID=sa,PWD=hNXQF222,Server=127.0.0.1,Database=Aspnet";
/*
SqlCommand myCommand = new SqlCommand(myExecuteQuery, myConnection);
myCommand.Connection.Open();
myCommand.ExecuteNonQuery();
myConnection.Close();
*/
string strConn ="DATABASE=Aspuser;SERVER=localhost;UID=sa;PWD=hNXQF222;";
SqlConnection Conn = new SqlConnection(strConn);
Conn.Open();
string mySqlCommand = "INSERT INTO UploadFiles (UploadFileName,UploadFileType,UploadFilePath,UploadFileLength,UploadFileContent) VALUES (@UploadFileName,@UploadFileType,@UploadFilePath,@UploadFileLength,@UploadFileContent)";
SqlCommand CmdObj = new SqlCommand(mySqlCommand, Conn);
CmdObj.Parameters.Add("@UploadFileName",SqlDbType.VarChar,50).Value = sUploadFileName;
CmdObj.Parameters.Add("@UploadFileType",SqlDbType.VarChar,50).Value = sUploadFileType;
CmdObj.Parameters.Add("@UploadFilePath",SqlDbType.VarChar,200).Value = sUploadFilePath;
CmdObj.Parameters.Add("@UploadFileLength",SqlDbType.BigInt,8).Value = sUploadFileLength;
CmdObj.Parameters.Add("@UploadFileContent",SqlDbType.Image).Value = Docbuffer;
CmdObj.ExecuteNonQuery();
Conn.Close();
string strUpfileResult="上传文件到数据库成功\r\n";
strUpfileResult=strUpfileResult+"上传文件名"+sUploadFileName+"\r\n";
strUpfileResult=strUpfileResult+"上传文件大小"+sUploadFileLength+"\r\n";
strUpfileResult=strUpfileResult+"上传文件路径"+sUploadFilePath+"\r\n";
strUpfileResult=strUpfileResult+"上传文件格式"+sUploadFileType+"\r\n";
TextBox1.Text=strUpfileResult;
}
}
}
热心网友
时间：2022-04-27 13:24
还有就是程序本身可能由于更换了IIS版本后出现的不可预料的错误而服务器又没有开服务器端调试，看不到错误
你别告诉我你的空间不支持ASP
热心网友
时间：2022-04-27 14:58
里面可以判断文件多少 文件类型
里面有教程和源码
参考资料：http://www.blueidea.com/common/shoutbox/redir.asp?2=n&id=11280
