how to avoid comma from string enclosed in double quotes?

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C#

C#4.0

i got problem while reading the following string . this is enclosed in double quotes this is not the problem but this string contain a comma which i want to avoid .i.e. when line string is imported program take it as full string from start of double quote to end of double quote.

here is the string

"X RAY PBH RT IT FEMUR FRACTURE POST OP XRAY -ACCEPTABLE WITH IMPLANT IN SITU 2D ECHO MILD CONC LVH GOOD LV SYSTOLIC FUN, ALTERED LV DIASTOLIC FUN."

i need this data as it is in database so that there will be no problem in exporting.
following is my import method edit it if possible.

public void ImportAllFilesOfFolder()//function declares methods to import//
     {
         try
         {

             using (StreamReader sr = new StreamReader(@"path of file"))
             {
                 //StreamReader sr = new StreamReader(@"C:\Users\Priya\Desktop\B\b.csv");
                 string line = sr.ReadLine();

                // line = line.Replace(",", "");
                 string[] value = line.Split(',');

                 DataTable dt = new DataTable();
                 DataRow row;

                 foreach (string dc in value)
                 {
                     dt.Columns.Add(new DataColumn(dc));
                 }

                 while (!sr.EndOfStream)
                 {
                     value = sr.ReadLine().Split(',');

                     if (value.Length == dt.Columns.Count)
                     {
                         row = dt.NewRow();
                         row.ItemArray = value;
                         dt.Rows.Add(row);
                     }
                 }

                 SqlBulkCopy bc = new SqlBulkCopy(con.ConnectionString, SqlBulkCopyOptions.TableLock);
                 bc.DestinationTableName = "SaiHp";
                 bc.BatchSize = dt.Rows.Count;
                 bc.WriteToServer(dt);
                 bc.Close();
             }
         }

         catch
         {

         }
         finally { con.Close(); }
     }

how to use regex in this code?