selecting perticular strings from inside a string

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Hi,
here my planning is to i have string with several values like
string abcd={a=1,b=2,c=3,......z=26}.
this is i have to select particular values like {j=10,l=12,q=17}.
so here is my code that will retrive data like above scenerio.


try
            {
                String sOrrData = e.Result.ToString();//assigning abcd string to this string.
                string sOrr = "";
                String[] sOrrValues ={"j","l","q" };

                for (int i = 0; i < sOrrValues.Length; i++)
                {
                    string sOrval = sOrrData.Substring(sOrrData.IndexOf(sOrrValues[i]), 100).ToString().Replace("\r\n", "$");
                  

                    string[] sOrrSplit = sOrval.Split('$');
                    sOrr += sOrrSplit[0].ToString().ToUpper() + "\r\n";
                }
                tborrdata.Text = sOrr;
                BusyIndicator4.IsBusy = false;
            }
            catch (Exception ex)
            {
                throw;
            }

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