已經調試通過
pic.aspx
<%@ Page language="c#" Codebehind="pic.aspx.cs" AutoEventWireup="false" Inherits="TestWeb.pic" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>pic</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<h5>給圖片加上水印效果(調試通過)</h5>
加在圖片上的文字：<input type="text" name="AddText" id="AddText" runat="server">
<br>
<input type="file" id="UploadFile" name="UploadFile" runat="server">
<br>
<asp:Button ID="_save" Runat="server" Text="Save"></asp:Button>
</form>
</body>
</HTML>
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pic.aspx.cs
using System;
using System.IO;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Text;
using System.Drawing.Design;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace TestWeb
{
/// <summary>
/// pic 的摘要說明。
/// </summary>
public class pic : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Button _save;
protected System.Web.UI.HtmlControls.HtmlInputText AddText;
protected System.Web.UI.WebControls.Label _dd;
protected System.Web.UI.HtmlControls.HtmlInputFile UploadFile;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此處放置用戶代碼以初始化頁面
}
#region Web 窗體設計器生成的代碼
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 該調用是 ASP.NET Web 窗體設計器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
/// 此方法的內容。
/// </summary>
private void InitializeComponent()
{
this._save.Click += new System.EventHandler(this._save_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void _save_Click(object sender, System.EventArgs e)
{
if(UploadFile.PostedFile.FileName.Trim()!="")
{
//上傳文件
string extension = Path.GetExtension(UploadFile.PostedFile.FileName).ToUpper();
string fileName = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString();
string path = Server.MapPath(".") + "/UploadFile/" + fileName + extension;
UploadFile.PostedFile.SaveAs(path);
//加文字水印，注意，這裏的代碼和以下加圖片水印的代碼不能共存
System.Drawing.Image image = System.Drawing.Image.FromFile(path);
Graphics g = Graphics.FromImage(image);
g.DrawImage(image, 0, 0, image.Width, image.Height);
Font f = new Font("Verdana", 9);
Brush b = new SolidBrush(Color.White);
string addText = this.AddText.Value.Trim();
//g.DrawString(addText, f, b, 10, 10);
g.DrawString(addText, f, b, 0, 0);
g.Dispose();
// //加圖片水印,aa.gif是加蓋的圖
// System.Drawing.Image image = System.Drawing.Image.FromFile(path);
// System.Drawing.Image copyImage = System.Drawing.Image.FromFile( Server.MapPath(".") + "/aa.gif");
// Graphics g = Graphics.FromImage(image);
// g.DrawImage(copyImage, new Rectangle(image.Width-copyImage.Width, image.Height-copyImage.Height, copyImage.Width, copyImage.Height), 0, 0, copyImage.Width, copyImage.Height, GraphicsUnit.Pixel);
// g.Dispose();
//保存加水印過後的圖片,刪除原始圖片
string newPath = Server.MapPath(".") + "/UploadFile/" + fileName + "_new" + extension;
image.Save(newPath);
image.Dispose();
if(File.Exists(path))
{
File.Delete(path);
}
Response.Redirect(newPath);
}
}
}
}
