[UWP][win 10 phone][C#]searching the list for a particular content whether it is case sensitive or not

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Hello all,
In my application iam having a search functionality , and i implemented it like below

C#

placelist = placelist.Where(i => i.category_name.Contains(postData)).Union(placelist.Where(i => i.category_address.Contains(postData))).Union(placelist.Where(i => i.category_tags.Contains(postData))).ToList();

C#

eventlist = eventlist.Where(i => i.event_name.Contains(searchconte)).Union(eventlist.Where(i=>i.event_location.Contains(searchconte))).ToList();

C#

indexlist = indexlist.Where(i => i.restaurant_location.Contains(searchtext)).Union(indexlist.Where(i => i.restaurant_name.Contains(searchtext))).Union(indexlist.Where(i=>i.cuisine_type.Contains(searchtext))).Union(indexlist.Where(i=>i.special_dishes.Contains(searchtext))).ToList();

when iam Entering the postData as "bamb", it is returning nothing , But when i enter the same thing like "Bamb", It is showing the results.

It is searching only Case-Sensitive, I want modify this statement in such a way that it should search and return the content whether it is Case-sensitive or not, and also it should for the content with coma(,) colon(:),Quotes("",'')

How can i modify the statement to get the above mentioned functionality.

What I have tried:

C#

placelist = placelist.Where(i => i.category_name.Contains(postData)).Union(placelist.Where(i => i.category_address.Contains(postData))).Union(placelist.Where(i => i.category_tags.Contains(postData))).ToList();

C#

eventlist = eventlist.Where(i => i.event_name.Contains(searchconte)).Union(eventlist.Where(i=>i.event_location.Contains(searchconte))).ToList();

C#

indexlist = indexlist.Where(i => i.restaurant_location.Contains(searchtext)).Union(indexlist.Where(i => i.restaurant_name.Contains(searchtext))).Union(indexlist.Where(i=>i.cuisine_type.Contains(searchtext))).Union(indexlist.Where(i=>i.special_dishes.Contains(searchtext))).ToList();

Posted 14-Jul-16 19:14pm

Mohan Rajesh Komatlapalli

Updated 18-Jul-16 21:00pm

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2 solutions

Solution 1

Quote:
when iam Entering the postData as "bamb", it is returning nothing , But when i enter the same thing like "Bamb", It is showing the results.

The problem is rather classical and easy to solve.
You have some data (whatever is the the organization).
For performance considerations, you have indexed the data with some couples (key, position).
The trick is to index on uppercase(key) and to do all searches on uppercase(searched key). It works also with lowercase() as long as the same is done on index and searches.

Posted 15-Jul-16 4:51am

Patrice T

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Mohan Rajesh Komatlapalli 18-Jul-16 0:28am

Hello, @Mr.ppolymorphe ,
Can you please modify the above posted code snippets as you said, Iam trying that but it not worked for me.

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Mohan Rajesh Komatlapalli · Accepted Answer · 2016-07-18T21:00:00

I have modified the code as below referred from StackOverflow

C#

indexlist = (from item in indexlist
                          where ContainsIgnoreCase(item.restaurant_location,searchtext)
                              || ContainsIgnoreCase(item.restaurant_name, searchtext)
                              || ContainsIgnoreCase(item.cuisine_type, searchtext)
                              || ContainsIgnoreCase(item.special_dishes, searchtext)
                              select item).ToList();

C#

placelist = (from item in placelist
                                 where ContainsIgnoreCase(item.category_name, postData)
                                 || ContainsIgnoreCase(item.category_tags, postData)
                                 || ContainsIgnoreCase(item.category_address, postData)
                                 select item).ToList();

C#

eventlist = (from item in eventlist
                                 where ContainsIgnoreCase(item.event_name, searchconte)
                                 || ContainsIgnoreCase(item.event_location, searchconte)
                                 select item).ToList();

C#

othersList = (from item in othersList
                                  where ContainsIgnoreCase(item.category_name, PostData)
                                 || ContainsIgnoreCase(item.category_tags, PostData)
                                 || ContainsIgnoreCase(item.category_address, PostData)
                                 select item).ToList();

This modification worked for me,
Thank You for trying out my problem.