• 设为首页
  • 点击收藏
  • 手机版
    手机扫一扫访问
    迪恩网络手机版
  • 关注官方公众号
    微信扫一扫关注
    公众号
登陆 注册

asp.net图片上传实例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

第一、图片上传，代码如下：
xxx.aspx

复制代码 代码如下:

 <td class="style1">
                <asp:FileUpload ID="FileUpload1" runat="server"  />
                <asp:Button ID="Button1" runat="server" Text="上传一般图片" onclick="Button1_Click" />
            </td>
            <td class="style3">
                <asp:Image ID="Image1" runat="server" Height="200px" Width="200px" />
            </td>


xxx.aspx.cs
复制代码 代码如下:

 protected void Button1_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < Request.Files.Count; i++)
            {
                HttpPostedFile file = Request.Files[i];
                if (file.ContentLength > 0)
                {
                    if (file.ContentType.Contains("image/"))
                    {
                        using (System.Drawing.Image img = System.Drawing.Image.FromStream(file.InputStream))
                        {
                            string FileName = System.IO.Path.GetFileName(file.FileName);
                            string[] SplitFileName = FileName.Split('.');
                            string AtterFileName = DateTime.Now.ToString("yyyMMddHHmmss")+"." + SplitFileName[1];
                            img.Save(Server.MapPath("/upload/" + AtterFileName));

                            this.Image1.ImageUrl = "upload/" + AtterFileName;
                        }
                    }
                    else
                    {
                        Response.Write("<script>alert('该文件不是图片格式！');</script>");
                    }
                }
                else
                {
                    Response.Write("<script>alert('请选择要上传的图片');</script>");
                }

            }
        }

第二、添加文字水印的图片上传，代码如下：
xxx.aspx

复制代码 代码如下:

 <td class="style1">
                <asp:FileUpload ID="FileUpload2" runat="server" />
                <asp:Button ID="Button2" runat="server" Text="上传文字图片" onclick="Button2_Click" />
            </td>
            <td>
                <asp:Image ID="Image2" runat="server" Height="200px" Width="200px" />
            </td>


xxx.aspx.cs
复制代码 代码如下:

 protected void Button2_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < Request.Files.Count; i++)
            {
                HttpPostedFile file = Request.Files[i];
                if (file.ContentLength > 0)
                {
                    if (file.ContentType.Contains("image/"))
                    {
                        using (System.Drawing.Image img = System.Drawing.Image.FromStream(file.InputStream))
                        {
                            using (Graphics g = Graphics.FromImage(img))
                            {
                                g.DrawString("我的图片", new Font("宋体", 14), Brushes.Red, 0, 0);
                            }
                            string FileName = System.IO.Path.GetFileName(file.FileName);
                            string[] SplitFileName = FileName.Split('.');
                            string AtterFileName = DateTime.Now.ToString("yyyMMddHHmmss") + "." + SplitFileName[1];
                            img.Save(Server.MapPath("/upload/" + AtterFileName));
                            this.Image2.ImageUrl = "upload/" + AtterFileName;
                        }
                    }
                    else
                    {
                        Response.Write("<script>alert('该文件不是图片格式！');</script>");
                    }
                }
                else
                {
                    Response.Write("<script>alert('请选择要上传的图片');</script>");
                }

            }
        }

第三、添加图片水印的图片上传，代码如下：
xxx.aspx

复制代码 代码如下:

 <td class="style1">
                <asp:FileUpload ID="FileUpload3" runat="server" />
                <asp:Button ID="Button3" runat="server" Text="上传水印图片" onclick="Button3_Click" />
            </td>
            <td>
                <asp:Image ID="Image3" runat="server" Height="200px" Width="200px" />
            </td>


xxx.aspx.cs
复制代码 代码如下:

protected void Button3_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < Request.Files.Count; i++)
            {
                HttpPostedFile file = Request.Files[i];
                if (file.ContentLength > 0)
                {
                    if (file.ContentType.Contains("image/"))
                    {
                        string fileName = file.FileName;
                        using (System.Drawing.Image img = System.Drawing.Image.FromStream(file.InputStream))
                        {
                            using (System.Drawing.Image imgWater = System.Drawing.Image.FromFile(Server.MapPath("/img/czlogo.jpg")))
                            {
                                using (Graphics g = Graphics.FromImage(img))
                                {
                                    g.DrawImage(imgWater, 0, 0);
                                }
                                string[] SplitFileName = fileName.Split('.');
                                string AtterFileName = DateTime.Now.ToString("yyyMMddHHmmss") + "." + SplitFileName[1];
                                img.Save(Server.MapPath("/upload/" + AtterFileName));
                                this.Image3.ImageUrl = "upload/" + AtterFileName;
                            }
                        }
                    }
                    else
                    {
                        Response.Write("<script>alert('该文件不是图片格式！');</script>");
                    }
                }
                else
                {
                    Response.Write("<script>alert('请选择要上传的图片');</script>");
                }
            }
        }

第四、上传图片浓缩图，代码如下：
xxx.aspx
复制代码 代码如下:

 <td class="style1">
                <asp:FileUpload ID="FileUpload4" runat="server" />
                <asp:Button ID="Button4" runat="server" Text="上传浓缩图片" onclick="Button4_Click" />
            </td>
            <td>
                <asp:Image ID="Image4" runat="server" Height="200px" Width="200px" />
            </td>


xxx.aspx.cs
复制代码 代码如下:

 protected void Button4_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < Request.Files.Count; i++)
            {
                HttpPostedFile file = Request.Files[i];
                if (file.ContentLength > 0)
                {
                    if (file.ContentType.Contains("image/"))
                    {
                        using (System.Drawing.Image img = System.Drawing.Image.FromStream(file.InputStream))
                        {
                            using (System.Drawing.Image imgThumb = new Bitmap(200, 100))
                            {
                                using (Graphics g = Graphics.FromImage(imgThumb))
                                {
                                    g.DrawImage(img, new Rectangle(0, 0, imgThumb.Width, imgThumb.Height), new Rectangle(0, 0, img.Width, img.Height), GraphicsUnit.Pixel);
                                }
                                string fileName = file.FileName;
                                string[] SplitFileName = fileName.Split('.');
                                string AtterFileName = DateTime.Now.ToString("yyyMMddHHmmss") + "." + SplitFileName[1];
                                img.Save(Server.MapPath("/upload/" + AtterFileName));
                                this.Image4.ImageUrl = "upload/" + AtterFileName;
                            }
                        }
                    }
                    else
                    {
                        Response.Write("<script>alert('该文件不是图片格式！');</script>");
                    }
                }
                else
                {
                    Response.Write("<script>alert('请选择要上传的图片');</script>");
                }
            }

        }

鲜花
握手
雷人
路过
鸡蛋
该文章已有0人参与评论

请发表评论

全部评论

专题导读
More+
上一篇：
asp.net微软图表控件使用示例代码分享发布时间：2022-02-05
下一篇：
.NET 日志系统设计思路及实现代码发布时间：2022-02-05
热门推荐
More+
热门话题
More+
阅读排行榜

扫描微信二维码

查看手机版网站

随时了解更新最新资讯

139-2527-9053

在线客服（服务时间 9:00～18:00）

在线QQ客服
地址：深圳市南山区西丽大学城创智工业园
电邮：jeky_zhao#qq.com
移动电话：139-2527-9053

Powered by 互联科技 X3.4© 2001-2213 极客世界.|Sitemap