Search a string within a string

Sweta Sinha

11y1.2kC#

Hi,

I have a search box and want to search a string from a string.i.e,

Suppose, str[]= abf,fghi,acb,stabu

and if I search for "ab",then it should display "abf" and "stabu"

My Code:-

List selectedValues = new List();

foreach (string str in completeList)

{

if(str.Contains(filterWith)) //filterWith is the sequence of characters to be searched

selectedValues.Add(str);

}

7 Replies

Know the answer? Post it — somebody with the same question will find it here.

Jignesh Trivedi11y ago
Accepted answer
Hi,
Agree with Anupam, using the LINQ to object you can find search result.
try...
string[] str= new [] {"abf","fghi","acb","stabu"};
var k = str.Where(p => p.IndexOf("ab") >= 0).ToList();
hope this will help you.
Anupam Singh11y ago
mention string which you are passing as filterWith
Jignesh Trivedi11y ago
Hi,
Can you please share example data?
and you want to search only by name right?
here you are searching on combination of roll, name and pNo
Sweta Sinha11y ago
Thank You.I got my mistake.
Actually the list from where I was searching contained upper case letters and i was searching with lower case letters.I did the change.
Sweta Sinha11y ago
Hi Anupam,

This is my code:-
public List getStudentList(string filterWith)
{
List fullList = new List();
List selectedValues = new List();
String selectQuery = "SELECT name,pNo,roll FROM Student ORDER BY roll DESC";
using (var dbase = new SQLiteConnection(Globals.DB_PATH, true))
{
dbase.RunInTransaction(()=>
{
var listOfNavs = dbase.Query(selectQuery);
foreach (ServerVehicles st in listOfNavs)
{
string str = st.roll + " : " + st.name + " : " + st.pNo;
fullList.Add(str);
}
foreach (string str in fullList)
{
if(str.Contains(filterWith))
selectedValues.Add(str);
}
});
dbase.Close();
}
return selectedValues;
}
Anupam Singh11y ago
Hi Sweta,

Can you post your complete code:
this code looks fine , if you have string array as
string[] str= anew [] {"abf","fghi","acb","stabu"};

and want to search "ab"

you can get results using string[] results=str.Where(s=>s.Contains("ab")).ToArray();
Rahul Bansal11y ago
There is a control named 'AutoCompleteExtender' in Ajax Tool kit. For more info click on below links.

http://www.aspsnippets.com/Articles/AJAX-AutoCompleteExtender-Example-in-ASPNet.aspx

http://www.codeproject.com/Articles/71338/Using-the-AutoComplete-Extender-to-Automatically-P

http://www.ajaxcontroltoolkit.com/AutoComplete/AutoComplete.aspx