سوال در مورد سرچ با استفاده از BindingSource

[alexmcse]

مثال

using System;using System.Globalization;

using System.Text.RegularExpressions;





public class Example

{

   public static void Main()

   {

      // Get the current NumberFormatInfo object to build the regular 

      // expression pattern dynamically.

      NumberFormatInfo nfi = NumberFormatInfo.CurrentInfo;





      // Define the regular expression pattern.

      string pattern; 

      pattern = @"^\s*[";

      // Get the positive and negative sign symbols.

      pattern += Regex.Escape(nfi.PositiveSign + nfi.NegativeSign) + @"]?\s?";

      // Get the currency symbol.

      pattern += Regex.Escape(nfi.CurrencySymbol) + @"?\s?";

      // Add integral digits to the pattern.

      pattern += @"(\d*";

      // Add the decimal separator.

      pattern += Regex.Escape(nfi.CurrencyDecimalSeparator) + "?";

      // Add the fractional digits.

      pattern += @"\d{";

      // Determine the number of fractional digits in currency values.

      pattern += nfi.CurrencyDecimalDigits.ToString() + "}?){1}$";

      

      Regex rgx = new Regex(pattern);





      // Define some test strings.

      string[] tests = { "-42", "19.99", "0.001", "100 USD", 

                         ".34", "0.34", "1,052.21", "$10.62", 

                         "+1.43", "-$0.23" };





      // Check each test string against the regular expression.

      foreach (string test in tests)

      {

         if (rgx.IsMatch(test))

            Console.WriteLine("{0} is a currency value.", test);

         else

            Console.WriteLine("{0} is not a currency value.", test);

      }

   }

}

// The example displays the following output:

//       -42 is a currency value.

//       19.99 is a currency value.

//       0.001 is not a currency value.

//       100 USD is not a currency value.

//       .34 is a currency value.

//       0.34 is a currency value.

//       1,052.21 is not a currency value.

//       $10.62 is a currency value.

//       +1.43 is a currency value.

//       -$0.23 is a currency value.