Question

Actually i am working on a sample code of my own trail where i enter a mobile number and click on buttonso that a form will open on that form i would like to show the name of that coresponding number from the string[] array available in the form

Assume i have

string[] User = { "XYZ", "ABC", "DEF" };
string[] Number = { "1234567890", "2345678901", "345678901" };

Assume i enter 1234567890 and click on enter i would like to display the corresponding name from the list avialable i.e XYZ.

I don’t know whteher i explain my problem clearly or not but it is similar to the finding the contact available.

Any better method please let me know..

Answer 1

Use Dictionary<long, string> is what you need here.

Dictionary<long, string> nameFromNumber = new Dictionary<long, string>();

nameFromNumber.Add(1234567890, "XYZ");
nameFromNumber.Add(2345678901, "ABC");
...

Then to find the name of the inserted number you can do:

long numberToCheck = 12364567890;
if (nameFromNumber.ContainsKey(numberToCheck)//Contains(numberToCheck)
{
    string name = nameFromNumber[numberToCheck];
    ...
}

Edit: change the signature to long instead of int, thanks to @Kirill how pointed this out, Anyway I personally would use string instead so my method will accept more generic format of numbers such as 012-3456789