如何在asp.net mvc3中使用部分页面上传文件 [英] How to use file upload from a partial page in asp.net mvc3

问题描述

我有一个局部视图页面，其中我有文件上传标记。我的部分视图页面下方有一个剃刀视图



@using（ Html.BeginForm（上传，提供者，FormMethod.Post，新{id =form，enctype =multipart / form-data}））

{

选择图片

< input type =filename =file/>   

< input type =submitvalue =上传图片name =Command/>

}



我的控制器方法为

 [HttpPost] 
  public  ActionResult Upload（HttpPostedFileBase file）
 {
  //  仅提取fielname  
  var  fileName = Path.GetFileName （file.FileName）; 
  //  将文件存储在〜/ images / User-Image文件夹 
  var  path = Path.Combine（Server.MapPath（  〜/ images /），fileName）; 
  //  这是您必须在数据库中保存的字符串 
 < span class =code-keyword> string  filepathToSave =   images / + fileName ; 
 file.SaveAs（path）; 
  //   -------------------- ------------------------  
 
  //  通过传递文件路径在DB中保存文件的代码 
 
  //   --------------------------------------- -------  
  return  View（）; 
} 

我总是在控制器方法的变量file中得到一个空值。我做了一点研究this.Concluded，正常情况下，如果我们从普通视图而不是部分视图使用文件上传它工作正常。但是从部分视图页面意外地上传文件。它像往常一样点击控制器方法，但每次我得到null我在前面提到的变量文件中的值。我搜索了谷歌以获得此问题的解决方案。但是失败了。请帮帮我。

解决方案

< pre lang =cs> // 上传图片并保存图片上传文件夹

使用 System.IO;
{
OpenFileDialog op1 = new OpenFileDialog（）;
op1.Multiselect = true ;
op1.ShowDialog（）;
op1.Filter = allfiles | * .xls;
textBox1.Text = op1.FileName;
pictureBox1.ImageLocation = op1.FileName;
int count = 0 ;
string [] FName;
foreach （ string s in op1.FileNames）
{
FName = s.Split（' \\' ）;
File.Copy（s， Path + FName [FName.Length - 1 ]）;
count ++;
}
MessageBox.Show（Convert.ToString（count）+ Image Uploaded）;
}

它可以帮助你.. !!

I have a partial view page,in which i have markup for file upload.I have a razor view as below inside my partial view page

@using (Html.BeginForm("Upload", "Provider", FormMethod.Post, new { id = "form", enctype = "multipart/form-data" }))
{

Select Image
<input type="file" name="file" />   
<input type="submit" value="Upload Image" name="Command" />

}

My controller method goes as

[HttpPost]
        public ActionResult Upload(HttpPostedFileBase file)
        {
            // extract only the fielname
            var fileName = Path.GetFileName(file.FileName);
            // store the file inside ~/images/User-Image folder
            var path = Path.Combine(Server.MapPath("~/images/"), fileName);
            // this is the string you have to save in your DB
            string filepathToSave = "images/" + fileName;
            file.SaveAs(path);
            //--------------------------------------------

            // Code to save file in DB by passing the file path

            //----------------------------------------------
            return View();
        }

I always get a null value in variable "file" of controller method.I did a little bit research over this.Concluded that, in normal way if we are using file upload from a normal view instead of partial view it work's fine.But file upload work unexpectedly from a partial view page.It hits controller method as usual,but every time i get null value in variable "file" as i have mentioned earlier.I searched over google to get a solution of this issue.But failed.Please help me out.

解决方案

// Upload image And save Image At Upload Folder

using System.IO;
{
            OpenFileDialog op1 = new OpenFileDialog();
            op1.Multiselect = true;
            op1.ShowDialog();
            op1.Filter = "allfiles|*.xls";
            textBox1.Text = op1.FileName;
            pictureBox1.ImageLocation = op1.FileName;
            int count = 0;
            string[] FName;
            foreach (string s in op1.FileNames)
            {
                FName = s.Split('\\');
                File.Copy(s, "Path" + FName[FName.Length - 1]);
                count++;
            }
            MessageBox.Show(Convert.ToString(count) + " Image Uploaded");
        }

it may help u ..!!

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