主要包括 得到站点用户IP,去除字符串最后一个','号、去除字符串第一个'/'号等/// <summary>
/// 得到站点用户IP
/// </summary>
/// <returns></returns>
public static string getUserIP()
{
return HttpContext.Current.Request.ServerVariables[REMOTE_ADDR].ToString();
}
/// <summary>
/// 去除字符串最后一个','号
/// </summary>
/// <param name=chr>:要做处理的字符串</param>
/// <returns>返回已处理的字符串</returns>
public static string Lost(string chr)
{
if (chr == null || chr == string.Empty)
{
return ;
}
else
{
chr = chr.Remove(chr.LastIndexOf(,));
return chr;
}
}
/// <summary>
/// 去除字符串第一个'/'号
/// </summary>
/// <param name=chr>要做处理的字符串</param>
/// <returns>返回已处理的字符串</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>
/// 替换html中的特殊字符
/// </summary>
/// <param name=theString>需要进行替换的文本。</param>
/// <returns>替换完的文本。</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>
/// 恢复html中的特殊字符
/// </summary>
/// <param name=theString>需要恢复的文本。</param>
/// <returns>恢复好的文本。</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>
/// 生成随机数字
/// </summary>
/// <param name=length>生成长度</param>
/// <returns></returns>
public static string Number(int Length)
{
return Number(Length, false);
}
/// <summary>
/// 生成随机数字
/// </summary>
/// <param name=Length>生成长度</param>
/// <param name=Sleep>是否要在生成前将当前线程阻止以避免重复</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 得到站点用户IP,去除字符串最后一个','号、去除字符串第一个'/'号等
//弹出对话框
public static void salert(string str)
{
HttpContext.Current.Response.Write(<script>alert(' + str + ');</script>);
}
/// <summary>
/// 显示消息提示框，并回到前一页面
/// </summary>
/// <param name=page>当前页面指针，一般为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>
/// 显示消息提示对话框，并进行页面跳转
/// </summary>
/// <param name=page>当前页面指针，一般为this</param>
/// <param name=strMsg>提示信息</param>
/// <param name=url> 跳转的目标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());
}
//为了插入单引号
public static string delSingle(string str)
{
return str.Replace(', '');
}
//由gridviw导出为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函数
/// </summary>
/// <param name=str>原始字符串</param>
/// <returns>MD5结果</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>
/// 根据Url获得源文件内容
/// </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秒超时
WebResponse response = request.GetResponse();
Stream resStream = response.GetResponseStream();
StreamReader sr = new StreamReader(resStream);
return sr.ReadToEnd();
}