I have a string :
id0:xxxxx:id0-value:xxxxx:id1:xxxxxxxx:id1-value:xxxxx:id3:xxxxxxxx:id3-value:xxx
I just need the value for idX-value from the string into array.
How can I achieve it?
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Tried anything or totally clueless?nunespascal– nunespascal2012-08-16 03:27:42 +00:00Commented Aug 16, 2012 at 3:27
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Good place for some Regex! One word... Match Collection.CoderMarkus– CoderMarkus2012-08-16 03:28:48 +00:00Commented Aug 16, 2012 at 3:28
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3 Answers
The simple way, the value is in position (4x - 1):
var list = input.Split(':');
var outputs = new List<string>();
for (int index = 0; index < list.Count(); index++)
{
if (index % 4 == 3)
outputs.Add(list.ElementAt(index));
}
Use String.Split()
http://msdn.microsoft.com/en-us/library/system.string.split.aspx
String myString = "id0:xxxxx:id0-value:xxxxx:id1:xxxxxxxx:id1-value:xxxxx:id3:xxxxxxxx:id3-value:xxx";
String[] tokens = myString.Split(new Char[] {':'});
The token array will contain {"id0","xxxxx","id0-value","xxxxx","id1","xxxxxxxx","id1-value","xxxxx","id3","xxxxxxxx","d3-value","xxx"}
The second possibility is to use String.IndexOf() and String.Substring().
http://msdn.microsoft.com/en-us/library/5xkyx09y http://msdn.microsoft.com/en-us/library/aka44szs
Int start = 0; ArrayList tokens; while((start = myString.IndexOf("-value:", start)) > -1) { ArrayList.Add(myString.Substring(start+6, myString.IndexOf(":", start+7); start += 6; // Jump past what we just found. }
Comments
Split it using a Regex(a regex which splits : coming after x), then split using colon : and use first index as a Dictionary Key and Second index as Dictionary value.
1 Comment
Erik Nedwidek
The reason I wouldn't recommend RegEx is because the data appears to be in a set pattern. RegEx compilation and usage is expensive both in terms of CPU and memory in comparison to just splitting the string. If the data is not in a clear pattern, then RegEx is the way to go.