asp.net圖片上傳樣本

來源:互聯網
上載者:User

.aspx代碼:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<!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>asp.net圖片上傳樣本</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button ID="btnUp" runat="server" Text="上傳圖片" OnClick="btnUp_Click" />
        <asp:FileUpload ID="picupload" runat="server" /></div>
    </form>
</body>
</html>

.cs代碼:

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    /// <summary>
    /// 當沒有選擇圖片時,使用預設圖片。為了儲存在資料庫中。
    /// </summary>
    /// <returns></returns>
    private string getimagepath()
    {
        try
        {
            return this.picupload.HasFile ? picupload.FileName : "nopic.jpg";
        }
        catch
        {
            return "nopic.jpg";
        }
    }
    protected void submitBt_Click(object sender, EventArgs e)
    {

    }
    protected void btnUp_Click(object sender, EventArgs e)
    {
        string savePath = @"images/teachers/";//圖片儲存路徑
        string fileName = Server.HtmlEncode(this.getimagepath());
        string extension = System.IO.Path.GetExtension(fileName);//取得副檔名
        string ImageName = "";
        if (fileName != "nopic.gif")
        {
            if ((extension == ".jpg") | (extension == ".gif"))
            {
                ImageName = DateTime.Now.ToString("yyyyMMddhhmmssfff") + extension;
                savePath += ImageName;
                savePath = Server.MapPath(savePath);
            }
            else
            {
                Response.Write("<script>alert('檔案上傳格式錯誤');history.back(1);</script>");
                Response.End();
            }
        }
        else
        {
            ImageName = fileName;
        }
        string imagepath = ImageName;
        if (fileName != "nopic.gif")
        {
            picupload.SaveAs(savePath);
        }
        Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "alert", "<script>alert('圖片上傳成功!')</script>", false);
    }
}

 

聯繫我們

該頁面正文內容均來源於網絡整理,並不代表阿里雲官方的觀點,該頁面所提到的產品和服務也與阿里云無關,如果該頁面內容對您造成了困擾,歡迎寫郵件給我們,收到郵件我們將在5個工作日內處理。

如果您發現本社區中有涉嫌抄襲的內容,歡迎發送郵件至: info-contact@alibabacloud.com 進行舉報並提供相關證據,工作人員會在 5 個工作天內聯絡您,一經查實,本站將立刻刪除涉嫌侵權內容。

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.