1.net 获取客户端ip方法(此方法不是很准确)

 public static string GetIP()

{
string str;
if (!string.IsNullOrEmpty(HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]))
{
str = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString();
if (str.Split(new char[] { ‘.‘ }, StringSplitOptions.RemoveEmptyEntries).Length == 4)
{
return str;
}
}
if (!string.IsNullOrEmpty(HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]))
{
str = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"].ToString();
if (str.Split(new char[] { ‘.‘ }, StringSplitOptions.RemoveEmptyEntries).Length == 4)
{
}
} return str;

return HttpContext.Current.Request.UserHostAddress;
}

2.获取浏览器语言

HttpContext.Current.Request.ServerVariables["HTTP_ACCEPT_LANGUAGE"].ToString();

3.日期字符串转换为标准日期

public static string GetDateTime(object values, string defaultvalues, string strFormat)
{
if (string.IsNullOrEmpty(Convert.ToString(values)))
{
return defaultvalues;
}
return DateTime.ParseExact(values.ToString(), strFormat, null).ToString("yyyy-MM-dd");
}

4.转换为decimal 

public decimal GetDecimal(object obj, decimal defaultvalue)
{
decimal result = defaultvalue;
if (obj!=null && Regex.IsMatch(obj.ToString(), @"^([+-]?)\d*[.]?\d*$"))
{
result = Convert.ToDecimal(obj);
}
return result;
}

4.转换为double

public double GetDouble(object obj, double defaultvalue)
{
double result = defaultvalue;
if (obj != null && Regex.IsMatch(obj.ToString(), @"^([+-]?)\d*[.]?\d*$"))
{
result =Math.Round(Convert.ToDouble(obj),2,MidpointRounding.ToEven);
}
return result;
}

5.转换为Int

public int GetInt(object obj, int defalutvaule)
{
int result = defalutvaule;
if (obj != null && Regex.IsMatch(obj.ToString(), @"^\d*$"))
{
result =Convert.ToInt32(obj);
}
return result;
}

6.获取request参数

public string GetParamValue(string paramkey,int type)
{
string result = "";
if (type==1)
{
result= HttpContext.Current.Request.QueryString[paramkey] != null ? HttpContext.Current.Request.QueryString[paramkey].ToString() : "";
}
if(type==2){
result= HttpContext.Current.Request.Form[paramkey] != null ? HttpContext.Current.Request.Form[paramkey].ToString() : "";
}
return result;
}

7.金额转为大写

public static string CapitalNum(string numeric)
{
string str = numeric;
string str2 = "";
string str3 = "仟佰拾亿仟佰拾万仟佰拾元角分";
str = str + "00";
int index = str.IndexOf(".");
if (index >= 0)
{
str = str.Substring(0, index) + str.Substring(index + 1, 2);
}
str3 = str3.Substring(str3.Length - str.Length);
for (int i = 0; i < str.Length; i++)
{
str2 = str2 + "零壹贰叁肆伍陆柒捌玖".Substring(int.Parse(str.Substring(i, 1)), 1) + str3.Substring(i, 1);
}
return str2;
}

AspNet 常有功能函数1.0