1using System;
 2using System.Data;
 3using System.Configuration;
 4using System.Collections;
 5using System.Web;
 6using System.Web.Security;
 7using System.Web.UI;
 8using System.Web.UI.WebControls;
 9using System.Web.UI.WebControls.WebParts;
10using System.Web.UI.HtmlControls;
11
12public partial class Upload : System.Web.UI.Page
13...{
14    SQLHelper helper = new SQLHelper();
15    protected void Page_Load(object sender, EventArgs e)
16    ...{
17        if (!IsPostBack)
18        ...{
19            if (Request.Params["ImgID"] != null)
20            ...{
21               btnUploadPic.Enabled = true;
22                ViewState["ImgID"] = Request.Params["ImgID"].ToString();
23            }
24            else
25            ...{
26                btnUploadPic.Enabled = false;
27                ViewState["ImgID"] = "";
28            }
29        }
30
31    }
32    protected void btnUploadPic_Click(object sender, EventArgs e)
33    ...{
34        if (!tbxPicPath.HasFile)
35        ...{
36            Response.Write("<script>window.alert('请指定上传路径！')</script>");
37            return;
38        }
39        else if (tbxPicPath.PostedFile.ContentLength == 0)
40        ...{
41            Response.Write("<script>window.alert('文件的内容不能为空！')</script>");
42            return;
43        }
44
45        // 获取上传图片的文件名
46        String fileName = tbxPicPath.PostedFile.FileName.Substring(tbxPicPath.PostedFile.FileName.LastIndexOf("\\"));
47
48        if (System.IO.File.Exists(Server.MapPath(Request.ApplicationPath) + "\\Pictures" + fileName))
49        ...{
50            Response.Write("<script>window.alert('该文件名在服务器中已存在，请更改文件名！')</script>");
51        }
52        else
53        ...{
54            try
55            ...{
56                // 上传文件
57                tbxPicPath.PostedFile.SaveAs(Server.MapPath(Request.ApplicationPath) + "\\Pictures" + fileName);
58                // 添加数据库信息
59                helper.addNode(tbxPicName.Text.Trim(), Request.ApplicationPath + "\\Pictures" + fileName, "0", ViewState["ImgID"].ToString());
60                // 显示上载成功的信息
61                Response.Write("<script>window.alert('文件上传成功！')</script>");
62            }
63            catch (Exception ex)
64            ...{
65                Response.Write("<script>window.alert('由于网络原因，上载文件错误  " + ex.Message + "')</script>");
66            }
67
68            tbxPicName.Text = "";
69        }
70    }
71    protected void btnReturn_Click(object sender, EventArgs e)
72    ...{
73        Response.Redirect("~/List.aspx");
74    }
75}
76