Develop Reference

How to test if a string array is boolean

I need to test for all values being only "0" or "1" in a string array and tried the following code without success:
bool isBool = Array.TrueForAll(str, val => val.Trim() == "0" || val.Trim() == "1");
and
bool isBool = str.All(val => val.Trim() == "0" || val.Trim() == "1");
Is there a different way I have to do this because I'm using a || condition?

I'm assuming that you mean the values have to be exclusively all 1's or 0's? In that case you need to test each case separately. Your existing code is true when the array contains only 0's or 1's. It would be false if any of the values were 2 though. One solution:
var allAreZero = new string[] { " 0 ", " 0", " 0" };
var allAreOne = new string[] { " 1 ", "1", " 1" };
var mixedOnesAndZeros = new string[] { " 1 ", "0", " 1" };
private bool ArrayIsExclusivelyTrueOrFalse(string[] data)
{
return data.All(i => int.TryParse(i, out int value) && value == 0) ||
data.All(i => int.TryParse(i, out int value) && value == 1);
}
ArrayIsExclusivelyTrueOrFalse(allAreZero); // true
ArrayIsExclusivelyTrueOrFalse(allAreOne); // true
ArrayIsExclusivelyTrueOrFalse(mixedOnesAndZeros); // false

Try this
var isBool = !str.Select(s => s.Trim()).Distinct().Any(s => s != "0" && s != "1");

you can try Any() and return in the first failing condition !str.Any(x => x.Trim() != "0" && x.Trim() != "1")

If you want to ensure that all the values in your array are either ALL "0" or ALL "1" (but not a mix of "0" and "1", as I originally read it), then one way would be to ensure that the number of Distinct items (after trimming) has a Count of 1 (meaning they're all the same), and that the item is a member of the set of valid values (in the code below we just check the first item, since we already know they're all the same at that point).
For example:
var validValues = new[] {"0", "1"};
var isBool = str.Select(i => i.Trim()).Distinct().Count() == 1 &&
validValues.Contains(str[0].Trim());

Get the substring of the non conditional part

I have this string for example:
2X+4+(2+2X+4X) +4
The position of the parenthesis can vary. I want to find out how can I extract the part without the parenthesis. For example I want 2X+4+4. Any Suggestions?
I am using C#.

Try simple string Index and Substring operations as follows:
string s = "2X+4+(2+2X+4X)+4";
int beginIndex = s.IndexOf("(");
int endIndex = s.IndexOf(")");
string firstPart = s.Substring(0,beginIndex-1);
string secondPart = s.Substring(endIndex+1,s.Length-endIndex-1);
var result = firstPart + secondPart;
Explanation:
Get the first index of (
Get the first index of )
Create two sub-string, first one is 1 index before beginIndex to remove the mathematical symbol like +
Second one is post endIndex, till string length
Concatenate the two string top get the final result

Try Regex approach:
var str = "(1x+2)-2X+4+(2+2X+4X)+4+(3X+3)";
var regex = new Regex(#"\(\S+?\)\W?");//matches '(1x+2)-', '(2+2X+4X)+', '(3X+3)'
var result = regex.Replace(str, "");//replaces parts above by blank strings: '2X+4+4+'
result = new Regex(#"\W$").Replace(result, "");//replaces last operation '2X+4+4+', if needed
//2X+4+4 ^

Try this one:
var str = "(7X+2)+2X+4+(2+2X+(3X+3)+4X)+4+(3X+3)";
var result =
str
.Aggregate(
new { Result = "", depth = 0 },
(a, x) =>
new
{
Result = a.depth == 0 && x != '(' ? a.Result + x : a.Result,
depth = a.depth + (x == '(' ? 1 : (x == ')' ? -1 : 0))
})
.Result
.Trim('+')
.Replace("++", "+");
//result == "2X+4+4"
This handles nested, preceding, and trailing parenthesis.

How to check a String for characters NOT to be included in C#

So I have a String like:
String myString = "AAAaAAA";
I want to check the String if it contains ANY characters that are not "A"
How can I do this? my previous code is:
Regex myChecker = new Regex("[^A.$]$");
if (checkForIncluded.IsMatch(myString))
{
//Do some Stuff
}
Is there any other way to do it? The code above does not detect the small a. But when I use a different String with only characters that are not "A" it works. Thank you!

String myString = "AAAaAAA";
if(myString.Any(x => x != 'A')) {
// Yep, contains some non-'A' character
}

Try something like this:
var allowedChars = new List<char>() { 'a', 'b', 'c' };
var myString = "abcA";
var result = myString.Any(c => !allowedChars.Contains(c));
if (result) {
// myString contains something not in allowed chars
}
or even like this:
if (myString.Except(allowedChars).Any()) {
// ...
}
allowedChars can be any IEnumerable< char >.

I want to check the String if it contains ANY characters that are not
"A"
You can use Enumerable.Any like;
string myString = "AAAaAAA";
bool b = myString.Any(s => !s.Equals('A')); // True

You can use Linq:
String myString = "AAAaAAA";
var result = myString.Where(x=>x != 'A'); // return all character that are not A
if(result.Count() > 0)
{
Console.WriteLine("Characters exists other than a");
}
if you want both cases:
String myString = "AAAaAAA";
var result = myString.Where(x=>x != 'A' || x != 'a');
or Use String.Equals():
var result = myString.Where(x => !String.Equals(x.ToString(), "A", StringComparison.OrdinalIgnoreCase));

Your regular expression is only trying to match the last character. This should work:
var myString = "AAaA";
bool anyNotAs = Regex.IsMatch(myString, "[^A]", RegexOptions.None);

how to get specific string from list box

i have a List box with some texts , i wanna get all the strings after Other:
and this is the code i use
string[] causearr = lst_Box.Items[i].Value.Split('-');
SqlSrcComplainCgeAnalysis.InsertParameters["ID"].DefaultValue =causearr[0].ToString(); SqlSrcComplainCgeAnalysis.InsertParameters["subId"].DefaultValue = causearr[2].ToString();
if (txt_OtherCause.Text != string.Empty && txt_OtherCause.Visible == true && (int.Parse(causearr[2].ToString()) == 7 || int.Parse(causearr[2].ToString()) == 15 || int.Parse(causearr[2].ToString()) == 21))
SqlSrcComplainCgeAnalysis.InsertParameters["CauseComments"].DefaultValue = causearr[3].ToString().Substring(causearr[3].ToString().LastIndexOf(":") + 3);
else
SqlSrcComplainCgeAnalysis.InsertParameters["CauseComments"].DefaultValue = string.Empty;
and this is the data in the List Box
Cause:SpareParts-SubCause:Others: First Line
Cause:Technical-SubCause:Others: Second Line
so how to return the data after "Others:" if this data changes , and also the Cause changes according to the user selection .

string s = "Cause:SpareParts-SubCause:Others: First Line".Split(new char[] { ' ' }, 2)[1];

string value = "Cause:SpareParts-SubCause:Others: First Line"
string[] lines = Regex.Split(value, ":Others:");
you now need lines[1] i guess

What you can do is split the string first on the colons ':', and then the last item in the array would be the data that you want.
result[0] == 'Cause'
result[1] == 'SpareParts-SubCause'
result[2] == 'Others'
result[4] == 'Cause'
result[5] == 'First Line'
or you could use a Regex to do all this in a cool way:
http://msdn.microsoft.com/en-us/library/hs600312.aspx

using too many booleans

Is there a better way to do this?
foreach (var line in lines)
{
bool t01 = line.Model.ToLower() == model;
bool t02 = line.Authority.ToLower() != "unknown";
bool t101 = line.Type.ToLower() == "adcn";
bool t102 = line.Type.ToLower() == "adcn/adv";
bool t103 = line.Type.ToLower() == "bn";
bool t104 = line.Type.ToLower() == "book";
bool t105 = line.Type.ToLower() == "cancel";
bool t106 = line.Type.ToLower() == "cir";
bool t107 = line.Type.ToLower() == "coord sht";
bool t108 = line.Type.ToLower() == "cre";
bool t109 = line.Type.ToLower() == "ddr";
bool t110 = line.Type.ToLower() == "dl";
if (t01 && t02)
if ((t101 || t102 || t103 || t104 || t105 || t106 || t107 || t108 || t109 || t110))
Console.WriteLine(line);
}
It actually goes up to t139. Clipped it for brevity.

It sounds like you need a HashSet<string> for the types:
static readonly HashSet<string> ValidTypes = new HashSet<string>
(StringComparer.OrdinalIgnoreCase)
{
"adcn", "adcn/adv", "bn" ...
};
if (line.Model.Equals(model, StringComparison.OrdinalIgnoreCase) &&
!line.Authority.Equals("unknown", StringComparison.OrdinalIgnoreCase) &&
validTypes.Contains(line.Type))
{
Console.WriteLine(line);
}
That will also be faster than comparing the string for each item individually. Note that although I've used OrdinalIgnoreCase in the above, that may not be what you really want - you may want CurrentCultureIgnoreCase or InvariantCultureIgnoreCase.
(Note that lower-casing strings in order to perform a case-insensitive comparison is a bad idea - particularly if you're just using the default locale to do it in. For example, if you lower-case "MAIL" and your current locale is Turkish, you won't get "mail".)

string[] validTypes = new string[] { "adcn", "adcn/adv", "bn", "book" /*, ...*/ };
foreach (var line in lines)
{
bool t01 = line.Model.ToLower() == model;
bool t02 = line.Authority.ToLower() != "unknown";
if(t01 && t02 && validTypes.Contains(line.Type.ToLower())
Console.WriteLine(line);
}

What do you mean by better? Just off the top of my head, you are evaluating 139 conditions, and then writing the line to the console if any of them are true. It would be more efficient to short circuit if the first one (or the third one, or the fourth, etc) was true and not bother evaluating the rest.
You can do this by storing the evaluation functions in a list:
var cases = new List<Func<Line>>();
cases.Add(l => l.Model.ToLower() == model); //Be careful of the closure here
cases.Add(l => l.Authority.ToLower() != "unknown");
... etc ...
and then evaluating the functions in order for each line, exiting early if the current function returns true:
if (cases.Any(c=>c(line)))
Console.WriteLine(line);

You could use a BitArray
or just plain LINQ
var types = new List<string>{ "adcn", "adcn/adv" }; // etc
if (types.Any(t => t == line.Type.ToLower()))
{
Console.WriteLine(line);
}
Considering your example:
var types = new List<string>{ "adcn", "adcn/adv" }; // etc
foreach (var line in lines)
{
if (types.Any(t => t == line.Type.ToLower()))
{
Console.WriteLine(line);
}
}
Or maybe
var types = new List<string>{ "adcn", "adcn/adv" }; // etc
foreach (var line in lines.Where(line => types.Any(t => t == line.Type.ToLower())))
{
Console.WriteLine(line);
}