check whether a string exists in list using for loop in c#

Question

I have a list arrString that contains string values. I need to check a string lookupvalue.Longname whether it exists in the list using for loop in C#.

 for(int i = 0 ;i < ResoCustomFields.LongnameNotToBeTaken.Count ;i++)
 {
    string myStringList = ResoCustomFields.LongnameNotToBeTaken[i].ToString();
    var arrString = myStringList.Trim('(',')').Split(',').ToList();
    if(arrString.Contains(resoField))
    {
    // if(!arrString[i].Any(str=>str.ToString().Contains(lookupValue.LongName)))
    // if(lookupValue.LongName.Contains(arrString.ToString()))
    //(!arrString.Any(str => str.Equals(lookupValue.LongName)))
    // if(!arrString.Equals(lookupValue.LongName))                                                      
    {
    }
}

Possible duplicate of Check if list contains element that contains a string and get that element — Smartis has left SO again
– Smartis has left SO again, Commented Apr 11, 2017 at 6:57
if (ResoCustomFields.LongnameNotToBeTaken.Any(line => line.Trim('(',')').Split(',').Any(item => item == resoField))) {...} — Dmitrii Bychenko
– Dmitrii Bychenko, Commented Apr 11, 2017 at 6:59
i tried arrString[i].Contains(lookupValue.LongName)..still its not working — Sree
– Sree, Commented Apr 11, 2017 at 7:01

Community · Accepted Answer · 2017-05-23 12:25:37Z

0

You can try the following code :

int pos = Array.IndexOf(arrString, lookupValue.LongName);
if (pos > -1)
{
//// DO YOUR STUF
}

Following is the reference:

Checking if a string array contains a value, and if so, getting its position

edited May 23, 2017 at 12:25

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answered Apr 11, 2017 at 7:09

Biswabid

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1 Comment

Sree Over a year ago

i tried ,but the index is always -1 even if the string values contain in list.

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