上传图像和固定/以＆lt Veryfing它的大小;输入类型=＆QUOT;文件＆QUOT;＆GT ;? [英] Uploading Image and Fixing/Veryfing it's size with <input type="file">?
问题描述
我使用ASP .NET 3.5 C＃，我喜欢对子级以获取用户试图从
I Use ASP .NET 3.5 C#, and i whould like to get the picture that the user trying to upload from
＆LT;输入类型=文件名称=uploadPictureID =uploadPicture＆GT; 可我只是用：
Request.Form["uploadPicture"];
和下一步是什么？
决不使用表单文件上传左右出场，
我想保存在我的文件系统文件，并保存在数据库中的路径。
Never played around with uploading files with forms, I wish to save this file on my File System and save the path on the database.
我也需要检查格式，大小和尺寸，如果可能的话甚至可能调整其大小。
I need also to check the format, size and dimensions, and maybe even resize it if possible.
谢谢，
丹
推荐答案
看看下面code
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default7.aspx.cs" Inherits="Default7" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server" enctype="multipart/form-data">
<div>
<input type="file" name="uploadPicture" id="uploadPicture">
</div>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Upload" />
</form>
</body>
</html>
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default7 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
string baseImageLocation = Server.MapPath("Images\\");
HttpFileCollection uploads = HttpContext.Current.Request.Files;
HttpPostedFile file = uploads["uploadPicture"];
string fileExt = Path.GetExtension(file.FileName).ToLower();
string fileName = Path.GetFileName(file.FileName);
if (fileName != "")
{
if (fileExt == ".jpg" || fileExt == ".gif")
file.SaveAs(baseImageLocation + fileName);
}
}
}
修改
您可以从HttpPostedFile得到的图像尺寸如下
you can get image size from HttpPostedFile as below
int size = file.ContentLength;
和图像的高度和宽度可以用下面的函数
and for image height and width you can used the following function
private void GetHeightAndWidht(string image)
{
Bitmap bmp = new Bitmap(image);
int height = bmp.Height;
int width = bmp.Width;
}
这篇关于上传图像和固定/以＆lt Veryfing它的大小;输入类型=＆QUOT;文件＆QUOT;＆GT ;?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！
