在后台获取upload file 数量的时候发现count一直为0，经检查发现了问题 ，代码如下：
前台：
var data = $("#DetailForm").serialize();
$.ajax({
url: ‘@Url.Action("SaveRequest", "RegistrationRequest")‘,
type: "POST",
dataType: "JSON",
data: data,
cache: false,
processData: false,
success: function (result) {
window.scrollTo(0, 0);
utility.hideMask();
FormSaveSuccess(result);
}
});
后台：
[HttpPost]
public ActionResult SaveRequest(DetailModel model)
{
if (ModelState.IsValid)
{
if (model.Type == Codes.VT.ToString() || model.Type == Codes.NT.ToString())
{
model.DocumentsList = Utility.BuildDocumentModel(Request.Files, model.DocumentSearchCriteria.ModuleCode, "", "", model.DocumentSearchCriteria.FunctionId);
if (model.DocumentsList.Count == 0)
{
return Json(new { HasError = true, ErrorMessage = MessageResources._NoUploadFile });
}
}
}
}
Request.Files 里文件count ==0.
解决这个问题只需要在前台调用action脚本里加上 属性 mimeType: "mutipart/form-data",
$.ajax({
url: ‘@Url.Action("SaveRequest", "RegistrationRequest")‘,
type: "POST",
dataType: "JSON",
data: new FormData(this),
mimeType: "mutipart/form-data",
cache: false,
processData: false,
success: function (result) {
window.scrollTo(0, 0);
utility.hideMask();
FormSaveSuccess(result);
}
});
MVC-前台调用后台action 传递upload file 参数问题
原文：http://www.cnblogs.com/wwzhang/p/4944860.html