asp.net常用函数收藏第1/2页

///

/// 得到站点用户IP
///

///
public static string getUserIP()
{
return HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"].ToString();
}

///

/// 去除字符串最后一个','号
///

/// :要做处理的字符串
/// 返回已处理的字符串
public static string Lost(string chr)
{
if (chr == null || chr == string.Empty)
{
return "";
}
else
{
chr = chr.Remove(chr.LastIndexOf(","));
return chr;
}
}

///

/// 去除字符串第一个'/'号
///

/// 要做处理的字符串
/// 返回已处理的字符串
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;
}

///

/// 替换html中的特殊字符
///

/// 需要进行替换的文本。
/// 替换完的文本。
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", "
");
return theString;
}

///

/// 恢复html中的特殊字符
///

/// 需要恢复的文本。
/// 恢复好的文本。
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("
", "\n");
return theString;
}



///

/// 生成随机数字
///

/// 生成长度
///
public static string Number(int Length)
{
return Number(Length, false);
}

///

/// 生成随机数字
///

/// 生成长度
/// 是否要在生成前将当前线程阻止以避免重复
///
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;
}

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