如何在asp.net上传图片 [英] how to upload images in asp.net

问题描述

我不知道如何在asp.net上传图像

解决方案

在页面中添加FileUpload控件和按钮。给按钮文本上传（并给出两个明智的名字）

处理按钮的Click事件：

  ///   <  摘要 >  
   ///  将文件上传到数据库。 
   ///   <   / summary  >  
   ///   <   param  < span class =code-summarycomment>   name =sender >  <   / param  >  
   ///   <   param     name =e >  <   / param  >  
   protected   void  butUpload_Click（ object  sender，EventArgs e）
 {
 StatusLabel.Text = SaveUpload（FileUpload1）; 
} 
  ///   <  摘要 >  
   ///  将上传保存到数据库中。 
   ///   <   / summary  >  
   ///   <   param  < span class =code-summarycomment>   name =fl > 包含控件下载。<   / param  >  
   ///   <  返回 > 状态为字符串<   / returns  >  
   private   string  SaveUpload（FileUpload fl）
 {
  if （fl。 HasFile）
 {
 尝试 
 {
  string  filename = Path.GetFileName（fl.FileName）; 
  byte  [] filedata = fl.FileBytes; 
 ... 
  return   string  .Format（  {0}已上传，filename）; 
} 
  catch （例外情况）
 {
  return   无法上传文件。出现以下错误： + ex.Message; 
} 
} 
  return   请选择一个文件。; 
} 
 

在例程的中间，你可以将文件保存到磁盘，也可以保存到数据库，或者你需要做什么。

使用fileUpload控件。请参见此处 [ ^ ]。

如何以 [ ^ ]前两个结果来自Code Project。请参阅以下内容：



如何使用ASP.NET上传图像 [ ^ ]

.NET图像上传 [ ^ ]

i didn''t know how to upload images in asp.net

解决方案

Add an FileUpload control and a button to your page. Give the button the Text "Upload" (and give both sensible names)
Handle the Click event for the button:

/// <summary>
/// Upload the file to the database.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void butUpload_Click(object sender, EventArgs e)
    {
    StatusLabel.Text = SaveUpload(FileUpload1);
    }
/// <summary>
/// Save an upload into the database.
/// </summary>
/// <param name="fl">Control containing the download.</param>
/// <returns>Status as a string</returns>
private string SaveUpload(FileUpload fl)
    {
    if (fl.HasFile)
        {
        try
            {
            string filename = Path.GetFileName(fl.FileName);
            byte[] filedata = fl.FileBytes;
            ...
            return string.Format("{0} uploaded", filename);
            }
        catch (Exception ex)
            {
            return "The file could not be uploaded. The following error occured: " + ex.Message;
            }
        }
    return "Please select a file.";
    }

In the middle of the routine, you can either save the file to disk, or to a database, or whatever you need to do with it.

use the fileUpload control. See here[^].

How bout starting with Google[^]? The first 2 results are from Code Project. See the following:

How to upload an image using ASP.NET[^]
.NET Image Uploading[^]

这篇关于如何在asp.net上传图片的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！