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POASP.Net MVC File Upload Post Parameters
 

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    <p>I am trying to go to a view with a speicifed batchId parameter wrapped in a ViewModel, pick a file to upload, get the uploaded file back and store the file data w/ the associated BatchId value in a database.</p> <p>When the form is submitted I don't know how to get back the viewmodel and the PostedFileBase so that I can get the BatchId value.</p> <p>I need the batchId value to associate it with the data I am storing in the database.</p> <p>I have the following Action Method in my Controller to allow adding new customers to the specified batch by means of a file upload and import:</p> <pre><code>public ActionResult AddCustomers(int batchId) { var viewModel = new AddCustomersViewModel() { BatchId = batchId, //other view model properties }; return View(viewModel); } </code></pre> <p>My view is strongly typed to that ViewModel:</p> <pre><code>Inherits="System.Web.Mvc.ViewPage&lt;TestExcelImport.Areas.Admin.ViewModels.AddCustomersViewModel&gt; </code></pre> <p>and has the following for the file upload:</p> <pre><code>&lt;asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"&gt; &lt;h2&gt;AddCustomers Batch ID : &lt;%:Model.BatchId %&gt;&lt;/h2&gt; &lt;form action="/Admin/Dashboard/AddCustomers" enctype="multipart/form-data" method="post"&gt; &lt;input type="file" id="SourceFile" name="SourceFile" /&gt; &lt;br /&gt; &lt;input type="submit" value="Send" name="btnUpload" id="Submit1" /&gt; &lt;/form&gt; &lt;/asp:Content&gt; </code></pre> <p>My HttpPost Action Method is defined as:</p> <pre><code> [HttpPost] public ActionResult AddCustomers(HttpPostedFileBase SourceFile) { //int batchId = ??? HOW DO I Get the BatchId int fileLength = SourceFile.ContentLength; //works! // read through SourceFile.InputStream and store it in db //need the associated BatchID though return RedirectToAction("Index"); } </code></pre> <p>I have tried adding a AddCustomersViewModel in the HttpPost return method parameter list but it is always null. I can read/parse the uploaded file just fine, just can't get back which BatchId it was a part of.</p> <p>Anybody see what I'm doing wrong?</p> <p>Thanks</p>
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