本文实例为大家分享了asp.net存储和读取数据库图片的具体代码，供大家参考，具体内容如下
1. 创建asp.net web窗体项目
代码如下：
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<body> <form id="form1" runat="server"> <h2>上传图片</h2> <div> <asp:FileUpload ID="ful_image" runat="server" /> <asp:Button ID="btn_submit" runat="server" Text="提交" /> <asp:Label ID="lbl_message" runat="server" Text="Label"></asp:Label> </div> <h2>展示图片</h2> <div> <asp:Button ID="btn_show" runat="server" Text="展示图片" /> <asp:Panel ID="pn_images" runat="server"></asp:Panel> </div> </form></body> |
效果图如下：
2. 创建数据库
数据库脚本如下：
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create database Imagetest go use Imagetest CREATE TABLE [dbo].[imageTable]( [ID] [int] IDENTITY(1,1) NOT NULL, [imageData] [image] NULL, CONSTRAINT [PK_imageTable] PRIMARY KEY CLUSTERED ( [ID] ASC)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY] |
数据库生成结果图：
3.使用EF实现图片存储
实现代码：
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protected void btn_submit_Click(object sender, EventArgs e) { ImagetestEntities ie = new ImagetestEntities(); imageTable it = new imageTable(); it.imageData = ful_image.FileBytes; it= ie.imageTables.Add(it); ie.SaveChanges(); if(it.ID!=0) { lbl_message.Text = "图片上传成功"; } else { lbl_message.Text = "图片上传失败"; } } |
运行结果：
4. 使用EF实现图片的展示
实现代码：
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protected void btn_show_Click(object sender, EventArgs e) { ImagetestEntities ie = new ImagetestEntities(); List<imageTable> list= ie.imageTables.ToList<imageTable>(); foreach (imageTable item in list) { Image img = new Image(); img.ImageUrl ="data:image/png;base64,"+ Convert.ToBase64String(item.imageData); pn_images.Controls.Add(img); } } |
运行结果：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/merciaMA/article/details/102928045
