title: problem with update strong typed dataset turn to database in C# .net framework 3.5
body: <p>I want to remove some special characters in a table of database. I've used strong typed table to do it. When i got all data into dataset from database and modified it then i called method update() of data adapter to turn dataset to database but it doesn't work.</p>
  
  <p>Below is my code</p>
  
  <pre><code>DsTel tel = new DsTel();
  
              DsTelTableAdapters.telephone_bkTableAdapter adapter = new DsTelTableAdapters.telephone_bkTableAdapter();
              adapter.Connection = new SqlConnection(ConfigurationManager.AppSettings["SiteSqlServer"].ToString());
              adapter.Fill(tel.telephone_bk);
  
              foreach (DsTel.telephone_bkRow row in tel.telephone_bk.Rows)
              {
  
                  row.telephoneNo = RemoveWhiteSpace(row.telephoneNo.ToString());
                  row.AcceptChanges();
              }
              tel.AcceptChanges();
              adapter.Update(tel.telephone_bk);
  </code></pre>
  
  <p>Please give me some ideas?</p>
  
  <p>Thanks in advance.</p>