How to mask phone number in listbox in C#, WPF

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I have one textBox to add Phone Number to listBox. Listbox value will be SAVED in XML file. for Masking phone Number Im Using Following Code :

I need like this : user enter phone number -> 9876543210 and click ADD button Number will be displayed in ListBox like this format-> XXXXXXX210.
after that user click on SUBMIT button listBox items(Original value 9876543210) will be Saved in xml file.

Thanks,

What I have tried:

string Phone = this.Textbox1.Text;
       string MaskedPhone = string.Format("XXXXXXX{0}", Phone.Trim().Substring(7, 3));
       ListBox1.Items.Add(Country_Code + "-" + MaskedPhone);

  this code masked Xml value too, I need Only ListBox Value should be Masked, Xml value should be as it is.

How can I do it in C# ??

Posted 3-Feb-20 20:53pm

Member 14672509

Updated 4-Feb-20 10:16am

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Richard MacCutchan · Answer 1 · 2020-02-03T22:29:00

Solution 1

You can either create your own object type to add to the ListBox.ObjectCollection Class (System.Windows.Forms) | Microsoft Docs[^], or use custom drawing to display the number in the format you want.

Posted 3-Feb-20 22:29pm

Richard MacCutchan

Comments

Maciej Los 4-Feb-20 16:16pm

5ed!

Maciej Los · Answer 2 · 2020-02-04T10:17:00

In addition to solution #1 by RichardMacCutchan, you should create your custom class, for example:

C#

public class MaskedPhone
{
	private readonly string countrycode = string.Empty;
	private readonly string phoneno = string.Empty;
	
	public MaskedPhone(string _countrycode, string _phoneno)
	{
		countrycode = _countrycode;
		phoneno = _phoneno;
	}


	public string CountryCode => countrycode;
	public string PhoneNo => phoneno;
	
	public override string ToString()
	{
		return string.Format("{0}-XXXXXXX{1}", countrycode, phoneno.Substring(7, 3));
	}
}

Note: Use proper data types! I've used string data type.

Usage:

C#

List<MaskedPhone> mps = new List<MaskedPhone>()
    {
        new MaskedPhone("+48", "1234567890"),
        new MaskedPhone("+46", "0123456789"),
        new MaskedPhone("+42", "6549873210"),
    };
foreach(MaskedPhone mp in mps)
{
    Console.WriteLine($"{mp.ToString()} => {mp.CountryCode}-{mp.PhoneNo}");
}