发布文件在控制器中始终为null [英] Posted file getting always null in controller

问题描述

我的模特是

 [RegularExpression（@（[a-zA-Z0-9 \ s_\\。 \  - ：]）+（。png | .jpg | .gif）$，ErrorMessage =只允许图像文件。）] 
 public HttpPostedFileBase Logo {get;组; } 

我的部分视图是

 @ Html.ValidationSummary（true）
 @using SocialMediaAnalytics.Web.Models; 
 @model SocialMediaAnalytics.Web.Models.Account.RegistrationModel 
 @using（Html.BeginForm（CreateDatabase，Settings，FormMethod.Post，new {id =formAddDatabaseandWorkSpace，encType =multipart / form-data}））
 {
< div class =col-sm-12> 
< div class =form-group> 
< label>徽标< / label> 
 @ Html.TextBoxFor（m => m.Logo，new {type =file}）
< / div> 
< / div> 
< / div> 
< / div> 
< div class =modal-footer> 
< button type =buttonclass =btn btn-defaultdata-dismiss =modal>关闭< / button> 
< button type =submitclass =btn btn-primaryid =btnAddDB> Save< / button> 
 
< / div> 
} 

和控制器是

 [HttpPost] 
 public JsonResult CreateDatabase（RegistrationModel model）
 {
 try 
 {
 else if（model.Logo！= null）
 {
 LogoUpload（model）; 
返回Json（新{title =上传徽标，
 message =徽标上传成功，类型=成功}）; 
 
} 
} 
< / pre 
 
但是模型中Logo的值即使在浏览图像后也始终为null。 
 
 我尝试了什么： 
 
我尝试使用类型而不是@Html.TextBoxFor（），但它每次都变为空。

解决方案

，ErrorMessage =只允许图像文件。）]
public HttpPostedFileBase Logo {get; set;}

我的部分视图是

 @ Html.ValidationSummary （true）
 @using SocialMediaAnalytics.Web.Models; 
 @model SocialMediaAnalytics.Web.Models.Account.RegistrationModel 
 @using（Html.BeginForm（CreateDatabase，Settings，FormMethod .Post，new {id =formAddDatabaseandWorkSpace，encType =multipart / form-data}））
 {
< div class =col-sm-12> 
 < div class =form-group> 
< label>徽标< / label> 
 @ Html.TextBoxFor（m => m.Logo，new {type =file} ）
< / div> 
< / div> 
< / div> 
< / div> 
< div class =modal-footer > 
<按钮类型e =buttonclass =btn btn-defaultdata-dismiss =modal>关闭< / button> 
< button type =submitclass =btn btn-primaryid =btnAddDB> Save< / button> 
 
< / div> 
} 

和控制器是

 [HttpPost] 
 public JsonResult CreateDatabase（RegistrationModel model）
 {
 try 
 {
 else if（model.Logo！= null）
 {
 LogoUpload（model）; 
返回Json（新{title =上传徽标，
 message =徽标上传成功，类型=成功}）; 
 
} 
} 
< / pre 
 
但是模型中Logo的值即使在浏览图像后也始终为null。 
 
 我尝试了什么： 
 
我尝试使用类型而不是@Html.TextBoxFor（），但它每次都变为空。

My model is

[RegularExpression(@"([a-zA-Z0-9\s_\\.\-:])+(.png|.jpg|.gif)$", ErrorMessage = "Only Image files allowed.")]
		public HttpPostedFileBase Logo { get; set; }

my partial view is

@Html.ValidationSummary(true)
@using SocialMediaAnalytics.Web.Models;
@model SocialMediaAnalytics.Web.Models.Account.RegistrationModel
@using (Html.BeginForm("CreateDatabase", "Settings", FormMethod.Post, new { id = "formAddDatabaseandWorkSpace", encType = "multipart/form-data" }))
{
<div class="col-sm-12">
				<div class="form-group">
					<label>Logo</label>
					@Html.TextBoxFor(m => m.Logo, new { type = "file" })
				</div>
			</div>
		</div>
	</div>
	<div class="modal-footer">
		<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
		<button type="submit" class="btn btn-primary" id="btnAddDB">Save</button>

	</div>
}

and the controller is

[HttpPost]
		public JsonResult CreateDatabase(RegistrationModel model)
		{
			try
			{
                          else if(model.Logo!=null)
					{
					LogoUpload(model);
					return Json(new { title = "Upload Logo", 
                         message = "Logo uploaded successfully", type = "Success" });
						
					}
}
</pre

but the value for "Logo" in model is always null even after browsing the image.

What I have tried:

I have tried with  type instead of @Html.TextBoxFor() but its getting null everytime.

解决方案

", ErrorMessage = "Only Image files allowed.")] public HttpPostedFileBase Logo { get; set; }

my partial view is

@Html.ValidationSummary(true)
@using SocialMediaAnalytics.Web.Models;
@model SocialMediaAnalytics.Web.Models.Account.RegistrationModel
@using (Html.BeginForm("CreateDatabase", "Settings", FormMethod.Post, new { id = "formAddDatabaseandWorkSpace", encType = "multipart/form-data" }))
{
<div class="col-sm-12">
				<div class="form-group">
					<label>Logo</label>
					@Html.TextBoxFor(m => m.Logo, new { type = "file" })
				</div>
			</div>
		</div>
	</div>
	<div class="modal-footer">
		<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
		<button type="submit" class="btn btn-primary" id="btnAddDB">Save</button>

	</div>
}

and the controller is

[HttpPost]
		public JsonResult CreateDatabase(RegistrationModel model)
		{
			try
			{
                          else if(model.Logo!=null)
					{
					LogoUpload(model);
					return Json(new { title = "Upload Logo", 
                         message = "Logo uploaded successfully", type = "Success" });
						
					}
}
</pre

but the value for "Logo" in model is always null even after browsing the image.

What I have tried:

I have tried with  type instead of @Html.TextBoxFor() but its getting null everytime.

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