WebForm水印照片
水印照片需要的元素
绘制:
1、画布
2、画笔 样式 粗细 颜色
3、画什么东西
4、用什么字体画 大小
5、位置
展示页面
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title></title> <style> #Image1 { width:300px; height:300px; } </style> </head> <body> <form id="form1" runat="server"> <div> <asp:FileUpload ID="FileUpload1" runat="server" /> <asp:Button ID="Button1" runat="server" Text="上传" /> <asp:Image ID="Image1" runat="server" /> </div> </form> </body> </html>
代码面
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Drawing; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { Button1.Click += Button1_Click; } void Button1_Click(object sender, EventArgs e) { //绘制画布:接收FileUpload1选中的图片,图片即画布 System.Drawing.Image img = System.Drawing.Image.FromStream(FileUpload1.FileContent); //创建绘制对象,告诉它在哪张照片进行绘制 Graphics g = Graphics.FromImage(img); //绘制文本内容 string s = "这是一张照片"; //绘制文本画刷和画刷颜色 Brush b = new SolidBrush(System.Drawing.Color.Red); //绘制文本字体和大小 Font f = new Font("宋体", 30); //开始绘制文本 g.DrawString(s,f,b,50,50); //设置水印后的图片的相对路径和名字 image文件夹与Default平级 string path = "image/"+DateTime.Now.ToString("yyyy年MM月dd日hh时mm分ss秒")+FileUpload1.FileName; //保存照片 img.Save(Server.MapPath(path)); //页面显示水印后的照片 Image1.ImageUrl = path; } }
完!!