C # General validation base class

Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Text.RegularExpressions;
Using System.Web;

Namespace Holworth.utility
{
public class Validatecommon
{

public static bool Validatedaysconvention (string a)
{

if (a.tolower () = = "A/360". ToLower () | | A.tolower () = = "a/365". ToLower () | | A.tolower () = = "Actual/360". ToLower () | | A.tolower () = = "actual/365". ToLower () | | A.tolower () = = "Act/360". ToLower () | | A.tolower () = = "act/365". ToLower ())
{
return true;
}

return false;

}

public static bool Validateratedaycountfraction (string a)
{

if (a.tolower () = = "Act/360,ajusted". ToLower () | | A.tolower () = = "Act/365,ajusted")
{
return true;
}

return false;

}
public static bool Validatebenchmarkinterest (string a)
{

if (a.tolower () = = "A/360". ToLower () | | A.tolower () = = "a/365". ToLower () | | A.tolower () = = "Actual/360". ToLower () | | A.tolower () = = "actual/365". ToLower () | | A.tolower () = = "Act/360". ToLower () | | A.tolower () = = "act/365". ToLower ())
{
return true;
}

return false;

}

public static bool Validateccypair (string a)
{
String regexposition = @ "^[a-z]{3}\. [A-z] {3}$ ";
if (Regex.IsMatch (A, regexposition))
{
return true;
}

return false;

}

public static bool Validatenotioncurrency (string a)
{

String RegexPositio2 = @ "^ ([a-z]{3}/[a-z]{3}) | ([a-z]{3}) $ ";
if (Regex.IsMatch (A, RegexPositio2))
{
return true;
}

return false;
}
public static bool Validatebuyorsell (string a)
{
if (a.toupper () = = "BUY" | | a.toupper () = = "SELL" | | a== "Buy" | | a== "sell")
{
return true;
}
return false;
}
public static bool Validatecallorput (string a)
{
if (a.toupper () = = "Call". ToUpper () | | A.toupper () = = "Put". ToUpper ())
{
return true;
}
return false;
}
public static bool Validateccybasedirection (string a)
{
if (a.toupper () = = "B" | | a.toupper () = = "S" | | A.toupper () = = "Buy" | | A.toupper () = = "Sell" | | A.toupper () = = "B/S")
{
return true;
}
return false;
}

public static bool Validateprice (string a)
{
String regexposition = @ "^ ([0-9]+ (\.[ 0-9]+)?) $";
if (Regex.IsMatch (A, regexposition))
{
return true;
}
Else
{
return false;
}
}
public static bool Validateisnum (string a)
{
String regexposition = @ "^ ([0-9]+) $";
if (REGEX.ISMATC H (A, regexposition))
{
return true;
}
Else
{
return false;
}
}
public static bool Validatedatetime (string date)
{
Date = date. Replace ("'", "");
String regexexpression =
@ "^ (\d{4}-(?: 0?). \d|1[0-2])-(?: [0-2]?\d|3[01]) ((?: [01]\d|2[0-3]) \:[0-5]\d\:[0-5]\d)?) | (\d{4}/(?: 0?) \d|1[0-2])/(?: [0-2]?\d|3[01]) ((?: [01]\d|2[0-3]) \:[0-5]\d\:[0-5]\d)?) | (?: 0 [1-9]| [12] [0-9]|3[01]) \ \ (?: 0 [1-9]|1[0-2]) \ ((?: 19|20) \d{2}) ((?: [01]\d|2[0-3]) \:[0-5]\d\:[0-5]\d)?) | ((19|20) \d\d (0[1-9]|1[012]) (0[1-9]|[ 12]\D|3[01])) $ ";

if (Regex.IsMatch (date, regexexpression))
{
return true;
}
return false;
}

<summary>
Time Conversion YYYY/MM/DD format
</summary>
<param name= "Date" ></param>
<returns></returns>
public static string validatedatetimestring (string date)
{
Date = date. Replace ("'", "");
String regexexpression = @ "^ (19|20) \d\d (0[1-9]|1[012]) (0[1-9]|[ 12]\D|3[01]) $ ";
if (Regex.IsMatch (date, regexexpression))
{
string dateTime = date;
String year = datetime.substring (0, 4);
string mm = Datetime.substring (4, 2);
string dd = datetime.substring (6, 2);
Return date = year + "/" + mm + "/" + dd;
}
return date;
}

public static bool Validatenotnull (string a)
{

if (!string. IsNullOrEmpty (a))
{
return true;
}
return false;
}
public static bool Validatevaluationcurreny (string a)
{

String regexposition = @ "^[a-z]{3}$";
if (Regex.IsMatch (A, regexposition))
{
return true;
}
Else
{
return false;
}
return false;
}
public static bool Validatecurreny (string a)
{

String regexposition = @ "^[a-z]{3}$";
if (Regex.IsMatch (A, regexposition))
{
return true;
}
Else
{
return false;
}
return false;
}
public static bool Validateccyamount (string amount)
{
Amount = amount. Replace (",", "");
String regexposition = @ "^ ([0-9]+ (\.[ 0-9]+)?) $";
if (Regex.IsMatch (amount, regexposition))
{
return true;
}
Else
{
return false;
}
}

}
}

C # General validation base class