自定义一个upload.ascx用户自定义控件
C#代码为:
using System;using System.Collections;using System.Configuration;using System.Data;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Xml.Linq;using System.IO;using System.Collections.Generic;
public partial class upload : System.Web.UI.UserControl{ protected void Page_Load(object sender, EventArgs e) {
FileUploadAdd();
}
/// <summary> /// 控制上传对象的属性如width，height，size上传的文件大小，filecount上传的总数量 /// </summary> private static string width = "500px", height = "300px", size = "0", type = "", filecount = "0", path = "";
/// <summary> /// 设置上传后返回的文件名称 /// </summary> private static ArrayList FileNameList = new ArrayList();
/// <summary> /// 获取上传文件后的文件名称 /// </summary> public ArrayList GetFileNameList { get { return FileNameList; } }
/// <summary> /// 保存上传文件的本地路径 /// </summary> protected static ArrayList arr = new ArrayList(); /// <summary> /// 保存上传文件的HttpPostedFile上传基础对象 /// </summary> protected static List<HttpPostedFile> list = new List<HttpPostedFile>();
/// <summary> /// 获取或设置空间的宽度，默认500px /// </summary> public string Width { get { return width; } set { width = value; } }
/// <summary> /// 获取或设置空间的高度，默认300px /// </summary> public string Height { get { return height; } set { height = value; } }
/// <summary> /// 获取或设置限定文件上传大小，默认为0 未限定 /// </summary> public int FileSize { get { return int.Parse(size); } set { size = value.ToString(); } }
/// <summary> /// 获取或设置限定上传文件的类型，默认无限定 /// </summary> public string FileType { get { return type; } set { type = value; } } /// <summary> /// 获取或设置上传文件的总数量，默认为0无限定 /// </summary> public int FileCount { get { return int.Parse(filecount); } set { filecount = value.ToString(); } }
/// <summary> /// 获取或设置上传文件的路径 /// </summary> public string FilePath { get { return path; } set { path = value; } }
/// <summary> /// 判断选择上传的文件大小跟类型 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void bntIfFileUplaod_Click(object sender, EventArgs e) { if (FileUpload1.HasFile) { string fileName = FileUpload1.PostedFile.FileName; string typefile = fileName.Split('.')[fileName.Split('.').Length - 1].ToString(); if (FileType != "") { string[] ty = FileType.Split('|'); int or = 0; foreach (string tys in ty) { if (tys == typefile || tys.ToUpper() == typefile.ToUpper()) { or++; } } if (or == 0) { FileUploadAdd(); alert(bntIfFileUplaod, "请上传限定的文件" + FileType + "!"); return; } } if (FileSize != 0) { if (FileUpload1.PostedFile.ContentLength / 1024 > FileSize) { FileUploadAdd(); alert(bntIfFileUplaod, "文件超出限定大小,当前文件为" + FileUpload1.PostedFile.ContentLength / 1024 + "KB!"); return; } } list.Add(FileUpload1.PostedFile); AddTextFile(fileName); } else { FileUploadAdd(); alert(bntIfFileUplaod, "请选择文件!"); } }
/// <summary> /// 添加文本，显示路径 /// </summary> /// <param name="value">完整的路径值</param> private void AddTextFile(string value) { int or = 0; for (int z = 0; z < arr.Count; z++) { if (arr[z].ToString() == value) { or++; } }
if (or == 0) { arr.Add(value); if (FileCount != 0) { if (arr.Count - FileCount != 1) { FileUploadAdd(); } else {
FileUploadAdd(); alert(bntIfFileUplaod, "最多可上传文件数量 " + FileCount + " 条!"); } } else { FileUploadAdd(); } } else { FileUploadAdd(); alert(bntIfFileUplaod, "已有相同的文件存在,请重新选择!"); } }
/// <summary> /// 绑定上传文件 /// </summary> protected void FileUploadAdd() { DataTable table = new DataTable("files"); DataColumn c1 = new DataColumn("filepath", typeof(String)); DataColumn c2 = new DataColumn("id", typeof(Int32)); table.Columns.Add(c2); table.Columns.Add(c1); for (int i = 1; i <= arr.Count; i++) { table.Rows.Add(table.NewRow()); table.Rows[i - 1]["filepath"] = arr[i - 1].ToString(); table.Rows[i - 1]["id"] = i.ToString(); } ReptAddFile.DataSource = table; ReptAddFile.DataBind(); }
/// <summary> /// 对话框文本信息 /// </summary> /// <param name="UpdatePanel">刷新控件ID</param> /// <param name="strMsg">要弹出的信息</param> /// <returns></returns> private void alert(Control UpdatePanel, string strMsg) {
ScriptManager.RegisterStartupScript(UpdatePanel, typeof(UpdatePanel), "alert", "alert('" + strMsg + "');", true);
}
/// <summary> /// 开始上传 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void bntUploadFile_Click(object sender, EventArgs e) { for (int i = 0; i < ReptAddFile.Items.Count; i++) { string pathName = ((Label)ReptAddFile.Items[i].FindControl("lblFilePath")).Text; string[] pathN = Path.GetFileName(pathName).Split('.'); string files = GetDateTimeString() + "." + pathN[1].ToString(); pathName = Server.MapPath(FilePath + files); HttpPostedFile postFile = list[i]; postFile.SaveAs(pathName); FileNameList.Add(files); System.Threading.Thread.Sleep(20); } list.Clear(); arr.Clear(); alert(bntUploadFile, "上传成功!"); FileUploadAdd();
}
/// <summary> /// 删除上传文件 /// </summary> /// <param name="source"></param> /// <param name="e"></param> protected void ReptAddFile_ItemCommand(object source, RepeaterCommandEventArgs e) { if (e.CommandName.Equals("delete")) { string name = ((Label)e.Item.FindControl("lblFilePath")).Text; for (int i = 0; i < arr.Count; i++) { if (arr[i].ToString() == name) { arr.RemoveAt(i); list.RemoveAt(i); } } FileUploadAdd(); } }
/// <summary> /// 获取上传时显示的进度条 /// </summary> /// <param name="path">限定的文件类型</param> /// <returns></returns> protected string GetFileTypePath(string path) { string[] sp = path.Split('|'); string name = ""; foreach (string paths in sp) { name += "<font style='color:Red; font-size:13px;'>" + paths + "</font> ,"; } return name.Substring(0, name.LastIndexOf(',')).ToString(); }
/// <summary> /// 获取一个带毫秒的时间字符串 /// </summary> /// <returns></returns> private string GetDateTimeString() { string date = string.Empty; string[] imgpt = DateTime.Now.ToString().Split(' '); string[] imgpt1 = imgpt[0].ToString().Split('-'); string[] imgpt2 = imgpt[1].ToString().Split(':'); string mill = DateTime.Now.Millisecond.ToString(); date = imgpt1[0] + imgpt1[1] + imgpt1[2] + imgpt2[0] + imgpt2[1] + imgpt2[2] + mill; return date; }}
