配置文件：
<system.web>
<httpRuntime executionTimeout="300" maxRequestLength="40960" useFullyQualifiedRedirectUrl="false" />
</system.web>
后台：
if (!IsPostBack)
{
System.Configuration.Configuration config = WebConfigurationManager.OpenWebConfiguration("~");
object o = config.GetSection("system.web/httpRuntime");
HttpRuntimeSection section = o as HttpRuntimeSection;
nhid_MaxRequestLength.Value = section.MaxRequestLength.ToString();
}
前台：
function UpladFile() {
//debugger;
var arr = "";
var files = document.getElementById("descFile").files;
var fd = new FormData();
var sumSize = 0;
for (var i = 0; i < files.length; i++) {
var file = files[i];
sumSize += file.size / 1024;
var fileName = file.name;
fd.append(‘myfile‘ + i, file);
if (arr.indexOf(fileName) == -1) {
arr += fileName + ";";
}
}
if (sumSize > parseInt($get(‘nhid_MaxRequestLength‘).value)) {
alert(‘一次上传文件大小的总和不能超过‘ + $get(‘nhid_MaxRequestLength‘).value + ‘KB！‘);
return;
}
var FileController = "/Service/UploadifyFile.ashx?billType=Task&comType=add&keyValue=" + $get(‘ihid_TaskRecM_Id‘).value;
// XMLHttpRequest 对象
var xhr = new XMLHttpRequest();
//初始化XHLHttpRequest
xhr.open("post", encodeURI(FileController), true);
//发送请求
xhr.send(fd);
//回调函数
xhr.onreadystatechange = function() {
if (xhr.readyState == 4 && xhr.status == 200) {
SaveDTable2(arr);
}
}
}
<asp:HiddenField runat="server" ID="nhid_MaxRequestLength" />
一般处理程序：
public class UploadifyFile : IHttpHandler
{
string AffixPath = System.Configuration.ConfigurationSettings.AppSettings["AffixPath"].ToString();
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
//context.Response.Write("Hello World");
string comType = context.Request["comType"].ToString();
switch (comType)
{
case "add":
UpLoad(context, 1);
break;
case "add2":
UpLoad(context, 2);
break;
case "del":
Del(context);
break;
default:
break;
}
}
/// <summary>
/// 上传
/// </summary>
/// <param name="context"></param>
/// <param name="type">1：任务、项目；2：资料</param>
public void UpLoad(HttpContext context, int type)
{
string strFileFullName = "", strFileName = "", strSaveFileName = "", strSaveFilePath = "", conStr = "";
string billType = context.Request["billType"].ToString();
string keyValue = context.Request["keyValue"].ToString();
switch (type)
{
case 1:
strSaveFilePath = AffixPath + "/temp/" + billType + "/" + keyValue + "/";
break;
case 2:
strSaveFilePath = AffixPath + "/" + keyValue + "/";
break;
}
if (!Directory.Exists(strSaveFilePath))
{
Directory.CreateDirectory(strSaveFilePath);
}
HttpFileCollection files = context.Request.Files;
for (int i = 0; i < files.Count; i++)
{
if (files[i].ContentLength > 0)
{
strFileFullName = files[i].FileName;
int index = strFileFullName.LastIndexOf(@"\");
strFileName = (index < 0) ? strFileFullName : strFileFullName.Substring(index + 1);
strSaveFileName = strSaveFilePath + strFileName;
if (System.IO.File.Exists(strSaveFileName))
{
File.Delete(strSaveFileName);
}
if (!string.IsNullOrEmpty(strFileName))
{
files[i].SaveAs(strSaveFileName);
}
}
}
}
public void Del(HttpContext context)
{
string billType = context.Request["billType"].ToString();
string keyValue = context.Request["keyValue"].ToString();
string file = context.Request["file"].ToString();
string strSaveFilePath = AffixPath + "/temp/" + billType + "/" + keyValue + "/" + file;
if (System.IO.File.Exists(strSaveFilePath))
{
File.Delete(strSaveFilePath);
}
}
public bool IsReusable
{
get
{
return false;
}
}