C#中如何实现ftp图片上传功能的图文代码分享(必看)

这篇文章主要介绍了C# 中实现ftp 图片上传功能(多快好省),需要的朋友可以参考下

前言

此篇讲到的是图片上传功能，每个网站必定会有这样类似的功能，上传文件、上传图片等等。那么接下来，看看我们EF+uploadfile+ftp如何玩转上传图片吧

效果预览

具体实现

一个简单数据库 只有一个主键Id，一个身份证正面路径和一个身份证背面路径三个字段。

首先呢，我们把实体类新建好如下：

public class ImageModel:BaseEntity {  /// <summary>  /// 用户Id  /// </summary>  public int ID { get; set; }  /// <summary>  ///身份证正面相对路径  /// </summary>  public string IDProofFront { get; set; }  /// <summary>  ///身份证背面相对路径  /// </summary>  public string IDProofBack { get; set; } }

其中 我们将身份信息实体继承自BaseEntity,我们看看BaseEntity里面是什么东东，代码如下：

public abstract partial class BaseEntity {  public override bool Equals(object obj)  {   return Equals(obj as BaseEntity);  }  private Type GetUnproxiedType()  {   return GetType();  }  public virtual bool Equals(BaseEntity other)  {   if (other == null)    return false;   if (ReferenceEquals(this, other))    return true;   return false;  }  public override int GetHashCode()  {   return base.GetHashCode();  }  public static bool operator ==(BaseEntity x, BaseEntity y)  {   return Equals(x, y);  }  public static bool operator !=(BaseEntity x, BaseEntity y)  {   return !(x == y);  } }

这里，我们将BaseEntity定义成一个抽象类，里面包含一些静态方法和重载方法

======================回到HTML=======

我们先回过头来讲页面，上面演示的是一个很简单的单页面，HTML代码如下：

 <form enctype="multipart/form-data" id="form" action="/Home/UpLoadImage" method="post">  <p class="full_w" style="margin-top: 100px; margin-left: 30%; width: 800px;">   <p class="h_title"> <b>用户上传的文件</b></p>   <p class="entry">    步骤： <span class="red" style="color: red">(上传资料必须是bmp,gif,jpg,jpeg,png类型,不能大于2M)</span>    <ol>     <li>先按『选择』键选择上传文件；</li>     <li>按『上传』键上传文件；</li>     <li>按『保存』键保存文件；</li>    </ol>   </p>   <p class="entry">    <p class="sep"></p>   </p>   <p class="entry">    <p id="wrapper" style="text-align: center; position: relative;">     <p class="form-group">      <input id="uploadfile" type="file" value="浏览..." class="file" name="FileName" data-upload-url="#" style="position: absolute; top: 0; right: 0; min-width: 100%; min-height: 100%; text-align: right; opacity: 0; background: none repeat scroll 0 0 transparent; cursor: inherit; display: block;" />     </p>    </p>   </p>   <table>    <tbody>     <tr>      <td class="entry">身份证正面</td>      <td>       @if (Model == null || Model.ID == null || string.IsNullOrEmpty(Model.IDProofFront))       {        <a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" target="_blank" class="winView">         <img style="border: none; width: 150px; height: 100px" src="/img/noupload.png" />        </a>       }       else       {        <a href=&quo<em style="color:transparent">本文来源[email protected]搞@^&代*@码网(</em>t;@(ViewBag.pathSrc + Model.IDProofFront)" rel="external nofollow" target="_blank"class="winView" >         <img style="border: none; width: 150px; height: 100px" src="@(ViewBag.pathSrc + Model.IDProofFront)" />        </a>       }       @Html.HiddenFor(m => m.IDProofFront)       @Html.HiddenFor(m => m.ID)      </td>      <td>       <a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" class="easyui-linkbutton btnFinleUP" data-op="1" data-type="image">上传</a>      </td>     </tr>     <tr>      <td class="entry">身份证背面</td>      <span id="lblinfosi" style="color: Green"></span>      <td>       @if (Model == null || Model.ID == null || string.IsNullOrEmpty(Model.IDProofBack))       {        <a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" target="_blank" class="winView">         <img style="border: none; width: 150px; height: 100px" src="/img/noupload.png" />        </a>       }       else       {        <a href="@(ViewBag.pathSrc + Model.IDProofBack)" rel="external nofollow" target="_blank" class="winView" >         <img style="border: none; width: 150px; height: 100px" src="@(ViewBag.pathSrc + Model.IDProofBack)" />        </a>       }       @Html.HiddenFor(m => m.IDProofBack)      </td>      <td>       <a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" class="easyui-linkbutton btnFinleUP" data-op="2" data-type="image">上传</a>      </td>     </tr>    </tbody>   </table>   <p class="entry">    <button class="button" name="btnSaveAll" value="保存" id="btnSaveAll" style="height: 30px; width: 80px; text-align: center;">保存</button>    <a href="/Home/Index" rel="external nofollow" style="height: 30px; text-align: center; width: 80px; background: #ffffff; border: 1px solid #DCDCDC; border-radius: 2px; color: #444444; cursor: pointer; display: inline-block; font: 700 11px Tahoma, Arial, sans-serif; margin-right: 10px; padding: 7px 12px 7px 12px; position: relative; text-decoration: none; text-shadow: 0px 1px 0px #FFFFFF;">返回</a>   </p>  </p> </form>

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