.CS中的JavaScript

using System;
using System.Web;
using System.Web.UI;
using System.Text;
using System.IO;
using System.Net;
using System.Collections.Generic;
using System.Configuration;
using System.Xml;

/**//// <summary>
/// Cs里JAVASCRIPT控制
/// </summary>
/// Author: 姜辉
/// History: 
///      2007-02-08   姜辉 [创建]

namespace UpFile
...{
    public class Utility : Page
    ...{
        /**//// <summary>
        /// 弹出提示
        /// </summary>
        /// <param name="message"></param>
        protected void MsgBox(string message)
        ...{
            // Get a ClientScriptManager reference from the Page class.
            ClientScriptManager cs = this.Page.ClientScript;

            // Define the name and type of the client scripts on the page.
            String csname = "PopupScript";
            Type cstype = this.GetType();

            // Check to see if the startup script is already registered.
            if (!cs.IsStartupScriptRegistered(cstype, csname))
            ...{
                String cstext = "alert('" + Server.HtmlEncode(message) + "');";
                cs.RegisterStartupScript(cstype, csname, cstext, true);
            }
        }

        /**//// <summary>
        /// 弹出提示并转向url
        /// </summary>
        /// <param name="message"></param>
        /// <param name="url"></param>
        protected void MsgBox(string message, string url)
        ...{
            // Get a ClientScriptManager reference from the Page class.
            ClientScriptManager cs = this.Page.ClientScript;

            // Define the name and type of the client scripts on the page.
            String csname = "PopupScript";
            Type cstype = this.GetType();

            // Check to see if the startup script is already registered.
            if (!cs.IsStartupScriptRegistered(cstype, csname1))
            ...{
                String cstext = "alert('" + Server.HtmlEncode(message) + "');window.location='" + url + "';";
                cs.RegisterStartupScript(cstype, csname, cstext, true);
            }
        }
        /**//// <summary>
        /// 最大化打开窗口
        /// </summary>
        /// <param name="pageName"></param>
        public static void COpenMax(string pageName)
        ...{
            //Get a ClientScriptManager reference from the Page class
            ClientScriptManager cs = this.Page.ClientScript;

            //Define the name and type of the client scripts on the page
            String csname = "open";
            Type cstype = this.GetType();

            //builder the script text
            StringBuilder cstext = new StringBuilder();
            cstext.Append("<script language='javascript'>");
            cstext.Append("{window.open('" + pageName + "','aa','width='+screen.width+' height='+screen.height+' top=0 left=0 toolbar=no menubar=no resizable=yes status=yes');}");
            cstext.Append("</script>");

            // Check to see if the startup script is already registered.
            if (!cs.IsStartupScriptRegistered(cstype, csname))
            ...{
                cs.RegisterStartupScript(cstype, csname, cstext.ToString(), true);
            }
        }
        /**//// <summary>
        /// 全屏窗口
        /// </summary>
        /// <param name="pageName"></param>
        public static void COpenFullScreen(string pageName)
        ...{
            //Get a ClientScriptManager reference from the Page class
            ClientScriptManager cs = this.Page.ClientScript;

            //Define the name and Type of the client scripts on the page
            String csname = "open";
            Type cstype = this.GetType();

            //builder the script text
            StringBuilder cstext = new StringBuilder();
            cstext.Append("<script language='javascript'>");
            cstext.Append("{window.open('" + pageName + "','aa','fullscreen');}");
            cstext.Append("</script>");
            // Check to see if the startup script is already registered
            if (!cs.IsClientScriptBlockRegistered(cstype, csname))
            ...{
                cs.RegisterStartupScript(cstype, csname, cstext.ToString(), true);
            }
        }
        /**//// <summary>
        /// 打开最大化模式窗口
        /// </summary>
        /// <param name="pageName"></param>
        public static void COpenModalDialog(string pageName)
        ...{
            //Get a ClientScriptManager reference from the Page class
            ClientScriptManager cs = this.Page.ClientScript;

            //Define the name and Type of the client script on the page
            String csname = "showModalDialog";
            Type cstype = this.GetType();

            //builder the script text
            StringBuilder cstext = new StringBuilder();
            cstext.Append("<script language='javascript'>");
            cstext.Append("{showModalDialog('" + pageName + "','aa','dialogWidth:'+screen.width+'; dialogHeight:'+screen.height+'; dialogTop:0; dialogLeft:0; center:yes; help:no; resizable:yes; status=yes');}");
            cstext.Append("</script>");

            //Check to see if the startup script is already registered
            if (!cs.IsClientScriptBlockRegistered(cstype, csname))
            ...{
                cs.RegisterStartupScript(cstype, csname, cstext.ToString(), true);
            }
        }
        /**//// <summary>
        /// 打开规定大小的模式窗口
        /// </summary>
        /// <param name="MyPage"></param>
        /// <param name="pageName"></param>
        /// <param name="width"></param>
        /// <param name="height"></param>
        public static void COpenModalDialogSelf(string pageName, int width, int height)
        ...{
            //Get a ClientScriptManager reference from the Page class
            ClientScriptManager cs = this.Page.ClientScript;

            //Define the name and Type of the client script on the page
            String csname = "showModalDialog";
            Type cstype = this.GetType();

            //builder the script
            StringBuilder cstext = new StringBuilder();
            cstext.Append("<script language='javascript'>");
            cstext.Append("{showModalDialog('" + pageName + "','aa','dialogWidth:'" + width.ToString() + "'; dialogHeight:'" + height.ToString() + "'; dialogTop:0; dialogLeft:0; center:yes; help:no; resizable:yes; status=yes');}");
            cstext.Append("</script>");

            //Check to see if the startup script is already registered
            if (!cs.IsClientScriptBlockRegistered(cstype, csname))
            ...{
                cs.RegisterStartupScript(cstype, csname, cstext.ToString(), true);
            }
        }
        /**//// <summary>
        /// 关闭窗口
        /// </summary>
        public static void CClose()
        ...{
            //Get a ClientScriptManager reference from the Page class
            ClientScriptManager cs = this.Page.ClientScript;

            //Define the name and Type of the client script on the page
            String csname = "close";
            Type cstype = this.GetType();

            // builder the script text
            StringBuilder cstext = new StringBuilder();
            cstext.Append("<script language='javascript'>");
            cstext.Append("{window.opener='anyone';window.close();}");
            cstext.Append("</script>");

            //Check to see if the startup script is already registered
            if (!cs.IsClientScriptBlockRegistered(cstype, csname))
            ...{
                cs.RegisterStartupScript(cstype, csname, cstext.ToString(), true);
            }

        }
        /**//// <summary>
        /// 下载文件
        /// </summary>
        /// <param name="DstrFileName"></param>
        /// <param name="YstrUrl"></param>
        /// <returns></returns>
        public static bool DownLoadFile(string DstrFileName, string YstrUrl)
        ...{
            //打开上次下载的文件或新建文件
            long lStartPos = 0;
            System.IO.FileStream fs;
            if (System.IO.File.Exists(DstrFileName))
            ...{
                fs = System.IO.File.OpenWrite(DstrFileName);
                lStartPos = fs.Length;
                fs.Seek(lStartPos, System.IO.SeekOrigin.Current);   //移动文件流中的当前指针
            }
            else
            ...{
                fs = new System.IO.FileStream(DstrFileName, System.IO.FileMode.Create);
                lStartPos = 0;
            }
            //打开网络连接
            try
            ...{
                System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(YstrUrl);
                if (lStartPos > 0)
                    request.AddRange((int)lStartPos);    //设置Range值
                //向服务器请求，获得服务器回应数据流
                System.IO.Stream ns = request.GetResponse().GetResponseStream();
                byte[] nbytes = new byte[512];
                int nReadSize = 0;
                nReadSize = ns.Read(nbytes, 0, 512);
                while (nReadSize > 0)
                ...{
                    fs.Write(nbytes, 0, nReadSize);
                    nReadSize = ns.Read(nbytes, 0, 512);
                }
                fs.Close();
                ns.Close();
                //("下载完成");
                return true;
            }
            catch
            ...{
                fs.Close();
                return false;
            }
        }
    }
}