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Is it possible to look up if a string in contained in an Array, with a switch case?
string text = "blalbac";
string arr[] = {"a","b","c"};
switch (text)
{
case arr.Contains(filename):
//do..
break;
}
I’m not sure what you’re trying to do. Do you want something like
foreach(string item in arr)
{
if(text.Contains(item))
{
...
}
}
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I want to concatenate two combo boxes value into 1 column of GridView in C#. I am using this code but it not concatenate it..
private void linetotal_KeyUp(object sender, KeyEventArgs e)
{
if(e.KeyCode==Keys.Enter)
{
object[] values = { cbxclassstd.Text,cbxfee.Text,
feeamount.Text,disc.Text,linetotal.Text};
this.dgvvoucher.Rows.Add(values);
}
}
Use string.Join to concatenate your Combobox's values into one column:
this.dgvvoucher.Rows.Add(string.Join("", values));//Or string.Join(",", values)
And if you just need to concatenate first two items:
this.dgvvoucher.Rows.Add(string.Join("", new[] { values[0] , values[1] }));
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I have an list of string values which looks like this:
GREEN,BLUE,BLUE
BLUE,BLUE,GREEN
GREEN,RED,RED
RED,BLUE,BLUE
BLUE,RED,RED
GREEN,BLUE,BLUE
RED,GREEN,BLUE
I will use a foreach to loop through each line and find unique values.
I need a regex that returns true is there are no color duplicates (RED,GREEN,BLUE) and false if there are color duplicates (RED,GREEN,RED).
What would the regex look like?
You can try using Linq instead of regular expressions:
using System.Linq;
...
string source = "BLUE,BLUE,GREEN";
// do we have three distinct items?
bool allDistinct = source.Split(',').Distinct().Count() >= 3;
Test:
List<string> list = new List<string>() {
"GREEN,BLUE,BLUE",
"BLUE,BLUE,GREEN",
"GREEN,RED,RED",
"RED,BLUE,BLUE",
"BLUE,RED,RED",
"GREEN,BLUE,BLUE",
"RED,GREEN,BLUE",
};
var result = list
.Select(source => $"{source,-15} {source.Split(',').Distinct().Count() >= 3}");
Console.Write(string.Join(Environment.NewLine, result));
Outcome:
GREEN,BLUE,BLUE False
BLUE,BLUE,GREEN False
GREEN,RED,RED False
RED,BLUE,BLUE False
BLUE,RED,RED False
GREEN,BLUE,BLUE False
RED,GREEN,BLUE True
Edit: Linq can help out in the generalized case:
bool allDistinct = !source
.Split(',')
.GroupBy(item => item, (k, s) => s.Skip(1).Any())
.Any(item => item);
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I got this class that I'm using for spin text.
public class Spinner
{
private static Random rnd = new Random();
public static string Spin(string str)
{
string regex = #"\{(.*?)\}";
return Regex.Replace(str, regex, new MatchEvaluator(WordScrambler));
}
public static string WordScrambler(Match match)
{
string[] items = match.Value.Substring(1, match.Value.Length - 2).Split('|');
return items[rnd.Next(items.Length)];
}
}
But I need it to be able to spin multi spintax text.
As example
{1|2} - {3|4}
Returns: 2 - 4
So it works.
But:
{{1|2}|{3|4}} - {{5|6}|{7|8}}
Returns: 2|4} - {5|7}
So it doesn't work if there is spintax inside spintax.
Any help? :)
Regular expressions are not good in dealing with nested structures, which means you should probably try a different approach.
In your example, {{1|2}|{3|4}} - {{5|6}|{7|8}} is the same as {1|2|3|4} - {5|6|7|8}, so maybe you don't need nested spintax.
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How apply linq select to string array in C#
ex :
string[] result;
...
result.Select(..)
?
Thanks.
You pass in a lambda function that tells the system what you want to do with each string.
string[] result;
...
var newList = result.Select(s => {do something with s});
The function can do most anything that takes a string as an input and returns a value - it doesn't even have to return a string! For example, if the strings contained numeric characters, you could return a collection of numbers:
IEnumerable<int> newList = result.Select(s => int.Parse(s));
Note that the original array will not be changed.