Get any result from array that starts with "..."

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C#

Well, i want to make a function that gets the first result from a array of strings formatted like so:

a=q
b=t
c=5
d=7

I'm using CRLF so its \r\n
Also in the code below, i have a swap feature so that you can also get the first result that ENDS (instead of starts) with whatever. (that's the swap property)
The function returns �

What I have tried:

this

private string GetFromArray(string a, string[] b, bool swap)
    {
        Console.WriteLine(String.Join("\\r\\n", b));
        for (int c = 0; c > b.Length; c++)
        {
            string d = b[c];
            if (!swap)
            {
                if (d.StartsWith(a))
                {
                    return d.Replace(a + "=", "");
                }
            }
            else
            {
                if (d.EndsWith(a))
                {
                    return d.Replace("=" + a, "");
                }
            }
        }
        return "�";
    }

    private string Get(string e, bool swap)
    {
        StreamReader q = new StreamReader(LangFile);
        string txt = q.ReadToEnd();
        q.Close();
        char[] a = { '\r' };
        string[] t = txt.Split(a);
        return GetFromArray("a", t, swap);
    }