/// 得到站點用戶IP
/// </summary>
/// <returns></returns>
public static string getUserIP()
{
return HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"].ToString();
}
/// <summary>
/// 去除字符串最后一個','號
/// </summary>
/// <param name="chr">:要做處理的字符串</param>
/// <returns>返回已處理的字符串</returns>
public static string Lost(string chr)
{
if (chr == null || chr == string.Empty)
{
return "";
}
else
{
chr = chr.Remove(chr.LastIndexOf(","));
return chr;
}
}
/// <summary>
/// 去除字符串第一個'/'號
/// </summary>
/// <param name="chr">要做處理的字符串</param>
/// <returns>返回已處理的字符串</returns>
public static string lostfirst(string chr)
{
string flg = "";
if (chr != string.Empty || chr != null)
{
if (chr.Substring(0, 1) == "/")
flg = chr.Replace(chr.Substring(0, 1), "");
else
flg = chr;
}
return flg;
}
/// <summary>
/// 替換html中的特殊字符
/// </summary>
/// <param name="theString">需要進行替換的文本。</param>
/// <returns>替換完的文本。</returns>
public static string HtmlEncode(string theString)
{
theString = theString.Replace(">", ">");
theString = theString.Replace("<", "<");
theString = theString.Replace(" ", " ");
theString = theString.Replace(" ", " ");
theString = theString.Replace("/"", """);
theString = theString.Replace("/'", "'");
theString = theString.Replace("/n", "<br/> ");
return theString;
}
/// <summary>
/// 恢復html中的特殊字符
/// </summary>
/// <param name="theString">需要恢復的文本。</param>
/// <returns>恢復好的文本。</returns>
public static string HtmlDiscode(string theString)
{
theString = theString.Replace(">", ">");
theString = theString.Replace("<", "<");
theString = theString.Replace(" ", " ");
theString = theString.Replace(" ", " ");
theString = theString.Replace(""", "/"");
theString = theString.Replace("'", "/'");
theString = theString.Replace("<br/> ", "/n");
return theString;
}
/// <summary>
/// 生成隨機數字
/// </summary>
/// <param name="length">生成長度</param>
/// <returns></returns>
public static string Number(int Length)
{
return Number(Length, false);
}
/// <summary>
/// 生成隨機數字
/// </summary>
/// <param name="Length">生成長度</param>
/// <param name="Sleep">是否要在生成前將當前線程阻止以避免重復</param>
/// <returns></returns>
public static string Number(int Length, bool Sleep)
{
if (Sleep)
System.Threading.Thread.Sleep(3);
string result = "";
System.Random random = new Random();
for (int i = 0; i < Length; i++)
{
result += random.Next(10).ToString();
}
return result;
}
主要包括 得到站點用戶IP,去除字符串最后一個','號、去除字符串第一個'/'號等
//彈出對話框
public static void salert(string str)
{
HttpContext.Current.Response.Write("<script>alert('" + str + "');</script>");
}
/// <summary>
/// 顯示消息提示框，并回到前一頁面
/// </summary>
/// <param name="page">當前頁面指針，一般為this</param>
/// <param name="strMsg">提示信息</param>
public static void ShowGoHistory(System.Web.UI.Page page, string strMsg)
{
page.ClientScript.RegisterStartupScript(page.GetType(), "message", "<script language='javascript' defer>alert('" + strMsg.ToString() + "');window.history.go(-1);</script>");
}
/// <summary>
/// 顯示消息提示對話框，并進行頁面跳轉
/// </summary>
/// <param name="page">當前頁面指針，一般為this</param>
/// <param name="strMsg">提示信息</param>
/// <param name="url"> 跳轉的目標URL</param>
public static void ShowRedirect(System.Web.UI.Page page, string strMsg, string url)
{
StringBuilder Builder = new StringBuilder();
Builder.Append("<script language='javascript' defer>");
Builder.AppendFormat("alert('{0}');", strMsg);
Builder.AppendFormat("top.location.href='{0}'", url);
Builder.Append("</script>");
page.ClientScript.RegisterStartupScript(page.GetType(), "message", Builder.ToString());
}
//為了插入單引號
public static string delSingle(string str)
{
return str.Replace("'", "''");
}
//由gridviw導出為Excel
public static void ToExcel(System.Web.UI.Control ctl)
{
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=Excel.xls");
HttpContext.Current.Response.Charset = "UTF-8";
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Default;
HttpContext.Current.Response.ContentType = "application/ms-excel";//image/JPEG;text/HTML;image/GIF;vnd.ms-excel/msword
ctl.Page.EnableViewState = false;
System.IO.StringWriter tw = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);
ctl.RenderControl(hw);
HttpContext.Current.Response.Write(tw.ToString());
HttpContext.Current.Response.End();
}
///using System.Security.Cryptography;
///using System.Text;
/// <summary>
/// MD5函數
/// </summary>
/// <param name="str">原始字符串</param>
/// <returns>MD5結果</returns>
public static string MD5(string str)
{
byte[] b = Encoding.Default.GetBytes(str);
b = new MD5CryptoServiceProvider().ComputeHash(b);
string ret = "";
for (int i = 0; i < b.Length; i++)
ret += b[i].ToString("x").PadLeft(2, '0');
return ret;
}
///using System.Net;
///using System.IO;
/// <summary>
/// 根據Url獲得源文件內容
/// </summary>
/// <param name="url">合法的Url地址</param>
/// <returns></returns>
public static string GetSourceTextByUrl(string url)
{
WebRequest request = WebRequest.Create(url);
request.Timeout = 20000;//20秒超時
WebResponse response = request.GetResponse();
Stream resStream = response.GetResponseStream();
StreamReader sr = new StreamReader(resStream);
return sr.ReadToEnd();
}
