Expose Class Methods and Properties without instantiating
Expose Class Methods and Properties without instantiating
(OP)
Hi,
I am new to C# and trying to do some testing.
I created a Class Library and compiled it to a DLL. The DLL replaces unwanted characters from a Telephone number. e.g. When a user enters a telephone number (+1(123)-456-7890) in a textbox and on event onTextBox_TextChange() the telephone number gets cleaned to 11234567890.
The code below is from the Class Library:
The Code that will use the DLL:
The question i'd like to ask is when I instantiate the Telephone object, all the properties and methods are exposed and I can use them.
But when I try accessing the "Telephone." object directly, it only shows 2 methods (Equals and ReferenceEquals). I'd like to expose all the methofs and properties without instantiating the Telephone objects. Can this be done? How?
Please help.
Thanks
Neld
I am new to C# and trying to do some testing.
I created a Class Library and compiled it to a DLL. The DLL replaces unwanted characters from a Telephone number. e.g. When a user enters a telephone number (+1(123)-456-7890) in a textbox and on event onTextBox_TextChange() the telephone number gets cleaned to 11234567890.
The code below is from the Class Library:
CODE
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Linq;
using System.Windows.Forms;
namespace Common.DLL
{
public class Telephone
{
public string FormattedAsIs { get; set; }
private string m_Telephone = string.Empty;
public string Formatted
{
get { return m_Telephone; }
set
{
m_Telephone = CleanTelephone(value);
}
}
public string CleanTelephone(string StrValue)
{
string pattern = @"[^\d]";
string replacement = string.Empty;
Regex rgx = new Regex(pattern);
StrValue = rgx.Replace(StrValue, replacement);
return StrValue;
}
}
} The Code that will use the DLL:
CODE
using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using Common.DLL;
namespace Practice
{
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
//The telephone functionalities...
//When instantiating the Telephone Object the Properties and Methods are exposed.
//*******************************************************************************
Telephone T = new Telephone();
T.FormattedAsIs = "12345";
T.Formatted = "a9b8c7654#3@2!1";
MessageBox.Show (T.FormattedAsIs + ' ' + '*' + ' ' + T.Formatted);
//When accessing the Telephone Object the Properties and Methods are not exposed except equals and referenceequals.
//*****************************************************************************************************************
Telephone.
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
} The question i'd like to ask is when I instantiate the Telephone object, all the properties and methods are exposed and I can use them.
But when I try accessing the "Telephone." object directly, it only shows 2 methods (Equals and ReferenceEquals). I'd like to expose all the methofs and properties without instantiating the Telephone objects. Can this be done? How?
Please help.
Thanks
Neld
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RE: Expose Class Methods and Properties without instantiating
Age is a consequence of experience
RE: Expose Class Methods and Properties without instantiating
CODE --> C#
public class Telephone { public static string CleanTelephone(string StrValue) { string pattern = @"[^\d]"; string replacement = string.Empty; Regex rgx = new Regex(pattern); StrValue = rgx.Replace(StrValue, replacement); return StrValue; } }I think it can then be used the way you're looking for.
CODE --> C#
string formattedPhone = Telephone.CleanTelephone("a9b8c7654#3@2!1"); Console.WriteLine(formattedPhone); Console.ReadLine();However, just for something to think about (since you've claimed that you're new at C# and learning is always a good thing)...
If you're just looking to strip non-numeric characters from a string - it doesn't have anything specifically to do with a phone number. What if you extended the string class to give you a numeric only representation? Then used the Telephone class to give you both a formatted (for display) and a numeric only (for database) representation of the phone number?
String class extension:
CODE --> StringExtensions.cs
public static class StringExtensions { public static string ToNumericOnly(this string str) { string pattern = @"[^\d]"; string replacement = string.Empty; Regex rgx = new Regex(pattern); return rgx.Replace(str, replacement); } }You can now use it with any string by adding .ToNumericOnly() to the string (see example below)
Now modify the Telephone class to use the extension.
CODE --> Telephone.cs
public class Telephone { public Telephone() { } public Telephone(string phoneNumber) { this.PhoneNumber = phoneNumber; } public string PhoneNumber { get; set; } public string NumericOnlyPhoneNumber { get { return this.PhoneNumber.ToNumericOnly(); } } public string FormattedPhoneNumber { get { string result = this.NumericOnlyPhoneNumber; if (!string.IsNullOrEmpty(result)) { long filteredNumber = System.Convert.ToInt64(result); switch (result.Length) { case 11: result = string.Format("{0:+# (###) ###-####}", filteredNumber); break; case 10: result = string.Format("{0:(###) ###-####}", filteredNumber); break; case 7: result = string.Format("{0:###-####}", filteredNumber); break; } } return result; } } }You can now use the Telephone class (as an instance class) to handle your phone number needs.
CODE --> program
Telephone phone = new Telephone(); phone.PhoneNumber = "11a9b8c7654#3@2!1"; Console.WriteLine(string.Format("stripped number: {0}", phone.NumericOnlyPhoneNumber)); Console.WriteLine(string.Format("formatted number: {0}", phone.FormattedPhoneNumber)); //this is more likely the input you're expecting from your form Telephone altPhone = new Telephone("+1(123)-456-7890"); Console.WriteLine(string.Format("stripped number: {0}", altPhone.NumericOnlyPhoneNumber)); Console.WriteLine(string.Format("formatted number: {0}", altPhone.FormattedPhoneNumber)); Console.ReadLine();Sorry if I got a bit wordy. This isn't necessarily the "best" solution... just some concepts to think about and look up. Good luck on your journey in C#!
-Mark
RE: Expose Class Methods and Properties without instantiating
/Daddy
-----------------------------------------------------
Helping people is my job...
RE: Expose Class Methods and Properties without instantiating
RE: Expose Class Methods and Properties without instantiating
/Daddy
-----------------------------------------------------
Helping people is my job...