Asp.net 头像的简单实现

1：创建数据库

Create Table ImageSave
(
    ID int PRIMARY KEY IDENTITY(1,1),
    Name nvarchar(50),
    img image
)

2：上传照片页关键代码

　　前台：

 <div>
        <asp:FileUpload ID="fileUpImage" runat="server" />
        <asp:Button ID="btnSubmit" runat="server" Text="提交" OnClick="btnSubmit_Click" />
        <image src="Image.aspx" class="cs"></image>
    </div>

<style>
        .cs
        {
            border-radius: 25px;
            width: 50px;
            height: 50px;
        }
    </style>

后台：

protected void btnSubmit_Click(object sender, EventArgs e)
        {
            ImageTestDataContext itDataContext = new ImageTestDataContext();
            Web.ImageSave img = new Web.ImageSave();
            byte[] image = new byte[fileUpImage.PostedFile.ContentLength];
            fileUpImage.PostedFile.InputStream.Read(image, 0, fileUpImage.PostedFile.ContentLength);
            img.Name = "测试" + new Random().Next(0,100);

            img.img = image;
            itDataContext.ImageSave.InsertOnSubmit(img);
            itDataContext.SubmitChanges();
        }

3：上面代码中图片链接的代码

　　前台不用写，下面为后台代码：

        protected void Page_Load(object sender, EventArgs e)
        {
            ImageTestDataContext itDataContext = new ImageTestDataContext();
            Web.ImageSave img = itDataContext.ImageSave.OrderByDescending(p => p.ID).FirstOrDefault();
            byte[] buffer = (byte[])img.img.ToArray();
            Response.ContentType = buffer.ToString();  //System.Byte[]
            Response.BinaryWrite(buffer);
        }

4：效果