无插件的图片批量上传，前端借鉴了网上大牛的，控制器自己弄的

//前台
<script type="text/javascript">

//下面用于多图片上传预览功能

function setImagePreviews(avalue) {

var docObj = document.getElementById("doc");

var dd = document.getElementById("dd");

dd.innerHTML = "";

var fileList = docObj.files;

for (var i = 0; i < fileList.length; i++) {

dd.innerHTML += "<div style='float:left' > <img id='img" + i + "' /> </div>";

var imgObjPreview = document.getElementById("img" + i);

if (docObj.files && docObj.files[i]) {

//火狐下，直接设img属性

imgObjPreview.style.display = 'block';

imgObjPreview.style.width = '150px';

imgObjPreview.style.height = '180px';

//imgObjPreview.src = docObj.files[0].getAsDataURL();

//火狐7以上版本不能用上面的getAsDataURL()方式获取，需要一下方式

imgObjPreview.src = window.URL.createObjectURL(docObj.files[i]);

}

else {

//IE下，使用滤镜

docObj.select();

var imgSrc = document.selection.createRange().text;

alert(imgSrc)

var localImagId = document.getElementById("img" + i);

//必须设置初始大小

localImagId.style.width = "150px";

localImagId.style.height = "180px";

//图片异常的捕捉，防止用户修改后缀来伪造图片

try {

localImagId.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)";

localImagId.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgSrc;

}

catch (e) {

alert("您上传的图片格式不正确，请重新选择!");

return false;

}

imgObjPreview.style.display = 'none';

document.selection.empty();

}

return true;

}

</script>
</head>
<body>
<div>

</div>
</body>
</html>

//控制器

//上传
[HttpPost]
public ActionResult csscff(string txt1,HttpPostedFileBase[] file)
{

if (new List<HttpPostedFileBase>(file).Contains(null))
{
return Content("<script>alert('请完整输入');location.href='BackstageIndex'</script>");
}
else {
var counts = "";

for (int i = 0; i < file.Length; i++)
{
// Qccords m = new Qccords();

string savePath = Server.MapPath("~/img/" + DateTime.Now.ToString("yyyyMMdd") + "/");

//文件大小 MB
// double FileSize = file[i].ContentLength / 1024000;

if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}

var fileName = file[i].FileName;

var ExtensionName = Path.GetExtension(fileName);

var fileSavePath = savePath + DateTime.Now.ToString("yyyyMMddHHmmsssfff") + ExtensionName;

file[i].SaveAs(fileSavePath);

var file_Name = "/" + fileSavePath.Substring(Server.MapPath("~/").Length).Replace("\\", "/");

// m.PhotoAlbum_State = 0;
// m.PhotoAlbum_Address = file_Name;
// m.User_Id = Convert.ToInt32(Session["User_Id"]);
// m.PhotoAlbum_Size = FileSize.ToString();
// m.PhotoAlbum_Name = fileName;
var txt1s = txt1;
counts = Convert.ToString(b.Qradd(file_Name, fileName,txt1));

}
if (Convert.ToInt32(counts) > 0)
{
return Content("<script>alert('上传成功');location.href='BackstageIndex'</script>");

}
else
{
return Content("<script>alert('上传失败');location.href='BackstageIndex'</script>");
}

}
// return View();
}

无插件的图片批量上传，前端借鉴了网上大牛的，控制器自己弄的

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