Insert Update Delete With XML file in c#

DataSet ds=new DataSet()

1) TO Insert To XML FIle.

ds.ReadXml(@"D:\ResumeSettings\Email.xml");
          
      for (int i = 0; i < col.Count; i++)
            {
                
                ds.Tables[0].Rows.Add(col[i].ToString(), "1");
            }
 ds.WriteXml(@"D:\ResumeSettings\Email.xml");

2) Delete From XML File.

ds.ReadXml(@"D:\ResumeSettings\Email.xml");

            if (ds.Tables[0].Rows.Count > 0)
            {
                            
                
                for (int d = 0; d < ds.Tables[0].Rows.Count; d++)
                {
                       ds.Tables[0].Rows.Remove(ds.Tables[0].Rows[d]);
                }
            }

            ds.WriteXml(@"D:\ResumeSettings\Email.xml");

3) TO Update XML FIle.


          ds.ReadXml(@"D:\ResumeSettings\SettingsData.XML");
                    DataRow[] dr = ds.Tables[0].Select("foldername= '" + FolderName.Trim().ToString() + "'");
                    foreach (DataRow ChangeRow in dr)
                    {
                        ChangeRow.BeginEdit();
                        ChangeRow[1] = "1";
                        ChangeRow.EndEdit();

                    }
                    ds.GetChanges(DataRowState.Modified);

                    ds.WriteXml(@"D:\ResumeSettings\SettingsData.XML");

Make the necessary changes as per ur xml files.