Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Need an If statement to match text within any part of an array

Posted on 2006-11-25
8
Medium Priority
?
424 Views
Last Modified: 2010-04-16
This is what I have and it works, but there must be an easier way:

            string[] aSharpKey = { "A#", "B#", "C##", "D#", "E#", "F##", "G##", "A#" };
            string User1 = UserChord1.Text;

            if (aSharpKey[0] == User1 || aSharpKey[1] == User1 || aSharpKey[2] == User1 || aSharpKey[3] == User1 || aSharpKey[4] == User1 || aSharpKey[5] == User1 || aSharpKey[6] == User1 || aSharpKey[7] == User1)
{
 //stuff
}

Is there syntax for searching the array to match any element, like:  if(aSharpKey[0 thru 7] == User1)
0
Comment
Question by:coolrazor
8 Comments
 
LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 18012030

string[] aSharpKey = { "A#", "B#", "C##", "D#", "E#", "F##", "G##", "A#" };
string User1 = UserChord1.Text;
string found = Array.Find(aSharpKeyUser1);

if (found == User1 )
{
 //stuff
}
0
 
LVL 86

Expert Comment

by:Mike Tomlinson
ID: 18012126
Find() is new in .Net 2.0.

You can also use the old IndexOf() method:
http://msdn2.microsoft.com/en-US/library/7eddebat(VS.80).aspx

0
 

Author Comment

by:coolrazor
ID: 18012172
I want to avoid using .Net 2.0
If possible, I'd like to avoid adding more strings or arrays before the "if" unless it simplifies this problem a lot.

Here's my latest try:

            string[] aSharpKey = { "A#", "B#", "C##", "D#", "E#", "F##", "G##", "A#" };
            string User1 = UserChord1.Text;

if (User1 == Array.IndexOf(aSharpKey, User1) )  //Error      1      Operator '==' cannot be applied to operands of type 'string' and 'int'
{
//stuff
}
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:coolrazor
ID: 18012247
I'll bite the bullet and use .Net if it'll make my life way easier, but the syntax below didn't work:

string[] aSharpKey = { "A#", "B#", "C##", "D#", "E#", "F##", "G##", "A#" };
string User1 = UserChord1.Text;
string found = Array.Find(aSharpKeyUser1); // the part inside the ( ) isn't right; I tried dots, commas, string, etc.  What's missing?

if (found == User1 )
{
 //stuff
}
0
 
LVL 86

Expert Comment

by:Mike Tomlinson
ID: 18012261
Should be something like...

    int index = Array.Find(aSharpKey, User1);
    if (index != -1)
    {
        // "index" is the index it was found out
    }
    else
    {
        // the value was not found in the array
    }
0
 
LVL 86

Expert Comment

by:Mike Tomlinson
ID: 18012273
Sorry...that should read:

    // "index" is the index it was found AT
0
 
LVL 18

Accepted Solution

by:
Ravi Singh earned 120 total points
ID: 18012433
If you choose to stay with .NET 1.1 then one approach is to use the ArrayList.Adapter method to use the ArrayList method Contains():

string[] aSharpKey = { "A#", "B#", "C##", "D#", "E#", "F##", "G##", "A#" };
string User1 = UserChord1.Text;

if (ArrayList.Adapter(aSharpKey).Contains(User1))
{
      //Found
}
0
 

Author Comment

by:coolrazor
ID: 18012956
I finally went Zephyr's approach, but had to add a little in the begining:

if(System.Collections.ArrayList.Adapter(aSharpKey).Contains(User1))  
{
//Stuff
}
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Article by: Ivo
C# And Nullable Types Since 2.0 C# has Nullable(T) Generic Structure. The idea behind is to allow value type objects to have null values just like reference types have. This concerns scenarios where not all data sources have values (like a databa…
Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
Want to learn how to record your desktop screen without having to use an outside camera. Click on this video and learn how to use the cool google extension called "Screencastify"! Step 1: Open a new google tab Step 2: Go to the left hand upper corn…
Are you ready to place your question in front of subject-matter experts for more timely responses? With the release of Priority Question, Premium Members, Team Accounts and Qualified Experts can now identify the emergent level of their issue, signal…
Suggested Courses

963 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question