Question

我正在asp.net mvc中开发一个应用程序，我想在其中上传文件，在视图中我使用rendercontrol来渲染文件上传器。在视图中我使用以下代码

<%: Html.RenderControl(new ControlInfo ()
                                                                {
                                                                    ControlID = item.ProjAttID,
                                                                    DefaultValue = item.DefaultValue,
                                                                    CanNull = item.CanNull, 
                                                                    // This field can be null. So, if field is null then don't pick the value of expression
                                                                    // from Regular Expression table. 
                                                                    RegularExpression = (item.RegularExpression != null)?  item.RegularExpression1.Value: null,
                                                                    ErrorMessage = (item.RegularExpression != null) ? item.RegularExpression1.Error : "",
                                                                    Type = (ControlType)item.FieldType,
                                                                    Value = (TempData["__" + item.ProjAttID] != null)? TempData["__" + item.ProjAttID].ToString() : null,
                                                                    ControlAttName = item.ProjAttName,
                                                                    RegExpressionID = (item.RegularExpression != null) ? item.RegularExpression1.ExpressionID : -1
                                                                }, true
                                                             )
                                    %>

在我的控制器中，我使用以下代码保存文件

int i = new Random().Next();
            string fileName = i + Path.GetFileName(data[3]);

            fileName = fileName.Replace(" ", "-");

            string trailingPath = Path.GetFileName(fileName);
            string fullPath = Path.Combine(Server.MapPath("~/UploadedImages/"), trailingPath);
            ____.SaveAs(fullPath);

我正在获取文件名，但现在我无法理解如何保存此文件。我可以在这个空间“ _ ”中编写“ _ .SaveAs（fullPath）”的代码，以便保存我的文件。请帮帮我

此致

我的控制者

using System; using System.Collections.Generic; using System.Linq; using System.Web; using UserInterface.Models; using System.Web.Mvc; using System.Text; namespace UserInterface.HtmlHelpers { // This enum defines the control types. public enum ControlType { TextField = 1, Password = 2, TextArea = 3, List = 4, CheckBox = 5, //06-03-2012 UploadField = 6 // } public static class ControlRenderHelper { public static MvcHtmlString RenderControl(this HtmlHelper html, ControlInfo pControlInfo, bool pSaveInfo, int pListSetID = 1) { string scriptString = ""; MvcHtmlString controlString = MvcHtmlString.Create(""); Dictionary<string, string> attributes = new Dictionary<string, string>(); TagBuilder tag; if (pControlInfo.RegExpressionID == 6) { // Adding jquery code to show datepicker widget scriptString = "<script>$(function() { $('#_" + pControlInfo.ControlID + "').datepicker({ dateFormat: 'dd MM yy' });});</script>"; } switch (pControlInfo.Type) { case ControlType.TextField: tag = new TagBuilder("input"); // Tag attributes. attributes.Add("type", "text"); attributes.Add("id", "_" + pControlInfo.ControlID); attributes.Add("name", "_" + pControlInfo.ControlID); // For client side validation (using Jquery). if (!pControlInfo.CanNull) { attributes.Add("class", "required"); } if (pControlInfo.Value != null) { attributes.Add("value", pControlInfo.Value); } else { attributes.Add("value", pControlInfo.DefaultValue); } tag.MergeAttributes(attributes); // For client side validation. scriptString += GetValidationScript(pControlInfo.ControlID, pControlInfo.RegularExpression, pControlInfo.ErrorMessage); controlString = MvcHtmlString.Create(tag.ToString() + scriptString); break; case ControlType.CheckBox: tag = new TagBuilder("input"); // Tag attributes. attributes.Add("type", "checkbox"); attributes.Add("id", "_" + pControlInfo.ControlID); attributes.Add("name", "_" + pControlInfo.ControlID); attributes.Add("value", "Yes"); if (pControlInfo.Value == "Yes") { attributes.Add("checked", "yes"); } tag.MergeAttributes(attributes); tag.InnerHtml = " " + pControlInfo.ControlAttName; controlString = MvcHtmlString.Create(tag.ToString()); break; case ControlType.TextArea: tag = new TagBuilder("textarea"); // Tag attributes. attributes.Add("rows", "4"); attributes.Add("cols", "40"); attributes.Add("id", "_" + pControlInfo.ControlID); attributes.Add("name", "_" + pControlInfo.ControlID); // For client side validation (using Jquery). if (!pControlInfo.CanNull) { attributes.Add("class", "required"); } tag.MergeAttributes(attributes); if (pControlInfo.Value != null) { tag.InnerHtml = pControlInfo.Value; } else { tag.InnerHtml = pControlInfo.DefaultValue; } scriptString += GetValidationScript(pControlInfo.ControlID, pControlInfo.RegularExpression, pControlInfo.ErrorMessage); controlString = MvcHtmlString.Create(tag.ToString() + scriptString); break; case ControlType.List: tag = new TagBuilder("select"); string[] options = pControlInfo.DefaultValue.Split(';'); string selectedValue = pControlInfo.Value; StringBuilder temp = new StringBuilder(); // Tag attributes. attributes.Add("id", "_" + pControlInfo.ControlID); attributes.Add("name", "_" + pControlInfo.ControlID); attributes.Add("class", "selectSize"); tag.MergeAttributes(attributes); foreach (string val in options) { TagBuilder optionTag = new TagBuilder("option"); optionTag.InnerHtml = val; if (val == selectedValue) { optionTag.MergeAttribute("selected", "selected"); } temp.Append(optionTag.ToString()); } tag.InnerHtml = temp.ToString(); controlString = MvcHtmlString.Create(tag.ToString()); break; case ControlType.Password: tag = new TagBuilder("input"); // Tag attributes. attributes.Add("type", "password"); attributes.Add("id", "_" + pControlInfo.ControlID); attributes.Add("name", "_" + pControlInfo.ControlID); // For client side validation (using Jquery). if (!pControlInfo.CanNull) { attributes.Add("class", "required"); } tag.MergeAttributes(attributes); // For client side validation. scriptString = GetValidationScript(pControlInfo.ControlID, pControlInfo.RegularExpression, pControlInfo.ErrorMessage); controlString = MvcHtmlString.Create(tag.ToString() + scriptString); break; case ControlType.UploadField: tag = new TagBuilder("input"); // Tag attributes. attributes.Add("type", "file"); attributes.Add("id", "_" + pControlInfo.ControlID); attributes.Add("name", "_" + pControlInfo.ControlID); // For client side validation (using Jquery). if (!pControlInfo.CanNull) { attributes.Add("class", "required"); } if (pControlInfo.Value != null) { attributes.Add("value", pControlInfo.Value); } else { attributes.Add("value", pControlInfo.DefaultValue); } tag.MergeAttributes(attributes); // For client side validation. scriptString += GetValidationScript(pControlInfo.ControlID, pControlInfo.RegularExpression, pControlInfo.ErrorMessage); controlString = MvcHtmlString.Create(tag.ToString() + scriptString); break; } if (pSaveInfo) { if (pListSetID == 1) { // Please see the RenderedControlsInfo class to understand the purpose of following code snippet. RenderedControlsInfo.L1ControlsID.Add(pControlInfo.ControlID); RenderedControlsInfo.L1ControlsRegExpression.Add(pControlInfo.RegularExpression); RenderedControlsInfo.L1ControlsCanNullProperty.Add(pControlInfo.CanNull); RenderedControlsInfo.L1ControlsErrorMessage.Add(pControlInfo.ErrorMessage); } else { RenderedControlsInfo.L2ControlsID.Add(pControlInfo.ControlID); RenderedControlsInfo.L2ControlsRegExpression.Add(pControlInfo.RegularExpression); RenderedControlsInfo.L2ControlsCanNullProperty.Add(pControlInfo.CanNull); RenderedControlsInfo.L2ControlsErrorMessage.Add(pControlInfo.ErrorMessage); } } return controlString; } static string GetValidationScript(long pControlID, string pRegExp, string pErrorMessage) { string validationScript = null; if (pRegExp != null) { pRegExp = pRegExp.Replace("/", @"\/"); // For client side validation. validationScript = "<script> $(function() {$.validator.addMethod('_" + pControlID + "', function(value, element) {" + "return this.optional(element) || /" + pRegExp + "/i.test(value); }, '" + pErrorMessage + "');$('#_" + pControlID + "').rules('add', '_" + pControlID + "');});</script>"; } return validationScript; } } }

Answer 1

以此为基础，它适用于我：

[查看]

<% using (Html.BeginForm("Upload", "Home", FormMethod.Post, new { enctype = "multipart/form-data" }))
   { %>
   <input type="file" name="file" />
   <input type="submit" value="upload" />
<% } %>

[动作]

public ActionResult Upload()
{
    return View();
}

[HttpPost]
public ActionResult Upload(HttpPostedFileBase file)
{
    if (file != null)
    {
        file.SaveAs(Server.MapPath("~/App_Data/Uploads/" + file.FileName));
    }
    return View();
}

该视图的重要之处在于表单需要将enctype设置为multipart / form-data。在操作中，参数需要与表单中的名称相同。

Answer 2

您需要在行动中添加HttpPostedFileBase。

在asp.net MVC 2.0中上传文件

2 个答案: