how to get the words between parenthesis using c#

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Hi,

I am working on a project where i have a requirement to get the words or text written between parenthesis and coloring it. for that i have used a code given below code using Indexof

C#

int start1 = paragraph1.IndexOf("(") + 1;
                           int end1 = paragraph1.IndexOf(")", start1);
                           if (start1 != -1 && end1 != -1)
                           {
                               string result = paragraph1.Substring(start1, end1 - start1);

                               string[] wrsstr = result.Split(' ');

                               for (int lst = 0; lst < wrsstr.Count(); lst++)
                               {
                                   if (strwords == wrsstr[lst])
                                   {
                                       if (Enumerable.Range(start1, end1).Contains(Convert.ToInt32(words1[i, 1])))
                                       {
                                           selection.SetRange(Convert.ToInt32(start1), Convert.ToInt32(end1));
                                           Globals.ThisAddIn.Application.Selection.Font.ColorIndex = Word.WdColorIndex.wdPink;
                                       }
                                   }

                               }
                           }

the above code gives text between parenthesis for first text (is) using Indexof .but my paragraph is having 3 such parenthesis .
eg: this (is) an (example) string given (for) text between (parenthesis).

the below code gives me the last word(parenthesis) using lastindex of. how to get the text between parenthesis in the middle.(example) and (for). is there any generic way to do this i want indexes along with the word to check for word and check for indexes and color it. word1[i,1] contains index of word.

C#

int start2 = paragraph1.LastIndexOf(")") - 1;
                            int end2 = paragraph1.LastIndexOf("(", start2);
                            if (start2 != -1 && end2 != -1)
                            {
                                string result2 = paragraph1.Substring(end2, start2 - end2);
                                string[] wrsstr2 = result2.Split(' ');

                                for (int lst2 = 0; lst2 < wrsstr2.Count(); lst2++)
                                {
                                    if (strwords == wrsstr2[lst2])
                                    {
                                        if (Enumerable.Range(end2, start2).Contains(Convert.ToInt32(words1[i, 1])))
                                        {
                                            selection.SetRange(Convert.ToInt32(end2+1), Convert.ToInt32(start2));
                                            Globals.ThisAddIn.Application.Selection.Font.ColorIndex = Word.WdColorIndex.wdPink;
                                        }
                                    }

                                }
                            }

Posted 17-Jun-15 5:19am

saimadhukar ghandikota

Updated 17-Jun-15 5:21am

v2

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Comments

PIEBALDconsult 17-Jun-15 12:13pm

What about "(parentheses in quotes)"? And \(escaped parentheses\) ? And, as Griff mentioned, ((nested parentheses))?

3 solutions

Solution 5

Refer here C# Regular Expression Get Text Between Brackets

C#

string regularExpressionPattern = @"\((.*?)\)";

     string inputText = "Find string inside brackets (C#.net) and (Vb.ne); example in (ASP.net);

     Regex re = new Regex(regularExpressionPattern);

     foreach (Match m in re.Matches(inputText))
     {
       Console.WriteLine(m.Value);
     }

Posted 18-Jun-15 17:53pm

BNotr

Updated 18-Jun-15 18:26pm

v2

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OriginalGriff · Accepted Answer · 2015-06-17T05:39:00

For that simple a text:

this (is) an (example) string given (for) text between (parenthesis).

It's relatively simple - you just need to keep processing, starting each time from the index of the closing parenthesis you just used.
So just change your code to add a loop, and keep looping until IndexOf returns a negative number when looking for a '(', and update start1 each time your finish colouring a section.

But...you might want to think a little more carefully about what you are doing: nested parentheses will cause you real problems!

this (is) an (example string given (for) text) between (parenthesis).

Would need you to colour the whole of "example string given (for) text" not stop after the first ')'.

PIEBALDconsult · Accepted Answer · 2015-06-17T06:05:00

Solution 2

Balanced Regex. :cool:

In Depth with .NET RegEx Balanced Grouping[^]

Posted 17-Jun-15 6:05am

PIEBALDconsult