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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace CustomerMaintenance
{
public static class Validator
{
private static string lineEnd = "\n";
public static string LineEnd
{
get
{
return lineEnd;
}
set
{
lineEnd = value;
}
}
public static string IsPresent(string value, string name)
{
string msg = "";
if (value == "")
{
msg += name + " is a required field." + LineEnd;
}
return msg;
}
public static string IsDecimal(string value, string name)
{
string msg = "";
if (!Decimal.TryParse(value, out _))
{
msg += name + " must be a valid decimal value." + LineEnd;
}
return msg;
}
public static string IsInt32(string value, string name)
{
string msg = "";
if (!Int32.TryParse(value, out _))
{
msg += name + " must be a valid integer value." + LineEnd;
}
return msg;
}
public static string IsWithinRange(string value, string name, decimal min,
decimal max)
{
string msg = "";
if (Decimal.TryParse(value, out decimal number))
{
if (number < min || number > max)
{
msg += name + " must be between " + min + " and " + max + "." + LineEnd;
}
}
return msg;
}
public static string IsValidEmail(string value, string name)
{
string msg = "";
if (value.IndexOf("@") == -1 ||
value.IndexOf(".") == -1)
{
msg += name + " must be a valid email address." + LineEnd;
}
return msg;
}
}
}
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