How do search seperate words in a string, but exclude combined words ?

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Hello All,
I ran accross another bug in my code.
my code snippet is something line this.

C#

string MyLine = "The Fast Cars";
if(Myline.Contains("Fast"))
{
//do something.
}

in this case the "if" statement is true.

Now if the string,

MyLine = "The Fastest Cars"; or
MyLine = "The Fastest, Cars"; or
MyLine = "The xxFastest, Cars";

Then the above "if" condition will pass.
Can this be avoided.

Posted 21-Jul-10 17:38pm

asjadazeez

Updated 21-Jul-10 18:12pm

Ankur^\m/

v3

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3 solutions

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Toli Cuturicu · Answer 1 · 2010-07-23T10:50:00

Solution 3

Use this method:

C#

public static bool ContainsWord(string line, string word)
{
    return Regex.IsMatch(line, @"\b" + word + @"\b");
}

Posted 23-Jul-10 10:50am

Toli Cuturicu

Christian Graus · Answer 2 · 2010-07-21T17:54:00

Solution 1

How is it true ?

Anyhow assuming you fix the code, you'd have to put a space either side of the word you search for, to search for the whole word only.

Posted 21-Jul-10 17:54pm

Christian Graus

Comments

asjadazeez 21-Jul-10 23:58pm

Ah sorry typing mistake the if statement should be MyLine.Contains("Fast")

Toli Cuturicu 25-Jul-10 9:13am

Reason for my vote of 2
Not so, comma, dot and other characters are word separators too.

Abhinav S · Answer 3 · 2010-07-21T18:19:00

Solution 2

Another way - you could split your string on spaces (i.e. blanks) into an array and then go through that array to check the exact string you are looking for.

Posted 21-Jul-10 18:19pm

Abhinav S

Comments

Toli Cuturicu 25-Jul-10 9:14am

Reason for my vote of 2
Not so, comma, dot and other characters are word separators too.

How do search seperate words in a string, but exclude combined words ?

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How do search seperate words in a string, but exclude combined words ?

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