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copied!<p>try {</p> <pre><code> e.Result = ""; //int count1 = 0; int val = 6000; DataTable dt = new DataTable(); dt.Columns.Add(new DataColumn("ComputerName", typeof(String))); //0 dt.Columns.Add(new DataColumn("IP", typeof(String))); //1 dt.Columns.Add(new DataColumn("MAC", typeof(String))); //2 dt.Columns.Add(new DataColumn("Descubierto", typeof(String))); for (int a = 1; a <= val; a++) { counter.Text = Convert.ToString(a); if (txtWorkGroupName.Text == "") return; //DataTable dt = new DataTable(); //dt.Clear(); //3 //int i = 0; try { // Datos del grupo WinNT://&&&&(Nombre del grupo de trabajo) DirectoryEntry DomainEntry = new DirectoryEntry("WinNT://" + txtWorkGroupName.Text + ""); DomainEntry.Children.SchemaFilter.Add("Computer"); ///************************************************* /// Interactuando con PC's dentro del mismo dominio ///************************************************* foreach (DirectoryEntry machine in DomainEntry.Children) { string strMachineName = machine.Name; string strMACAddress = ""; IPAddress IPAddress; DateTime discovered; try { IPAddress = getIPByName(machine.Name); } catch { continue; }//try/catch ///************************************************* /// Obtener Mac ///************************************************* strMACAddress = getMACAddress(IPAddress); discovered = DateTime.Now; ///************************************************* /// Manejo de repeticiones en el grid ///************************************************* bool isDuplicate; for(int nbRow = 0; nbRow < dt.Rows.Count; nbRow++) { for(int nbRowCompare = nbRow; nbRowCompare < dt.Rows.Count; nbRowCompare++) { isDuplicate = true; for(int nbCol = 0; nbCol < dt.Rows[nbRow].Cells.Count; nbCol++) { if(dt[nbCol, nbRow].Value != dt [nbCol, nbRowCompare]) { isDuplicate = false; break; //Exit for each column if they are not duplicate } } if(isDuplicate) { MessageBox.Show("el valor esta duplicado"); } } } ///************************************************* /// this is gonna BE fixed ///************************************************* DataRow dr = dt.NewRow(); dr[0] = machine.Name; dr[1] = IPAddress; dr[2] = strMACAddress; dr[3] = Convert.ToString(discovered); dt.Rows.Add(dr); dgvComputers1.DataSource = dt; dgvComputers1.Refresh(); //dt.Columns(machine.Name).Unique = true; //dt.Columns(IPAddress).Unique = true; //dt.Columns(strMACAddress).Unique = true; }//foreach loop // DataView dv = new DataView(); // dv = dt; Thread.Sleep(2000); //dt = ((DataView)this.dgvComputers1.DataSource).Table; //dt.WriteXml(@"testermac.xml"); ///************************************************* /// SETTING DATASOURCE ///************************************************* // dgvComputers.DataSource = dt; //goto factor; //factor: // if (restart < 20) //{ // btnScan.PerformClick(); // restart = restart + restart++; //counter.Text = Convert.ToString(restart); //} }//try/catch catch (Exception ex) { { MessageBox.Show(ex.Message); } } if (backgroundWorker2.CancellationPending) { e.Cancel = true; return; } } } catch (NullReferenceException ex) { MessageBox.Show("error:" + ex); //tbmessage.Text += "se ha producido un error: " + ex + Environment.NewLine; //tbmessage.SelectionStart = tbmessage.Text.Length; //tbmessage.ScrollToCaret(); } catch (NoNullAllowedException ex) { MessageBox.Show("error:" + ex); } catch (AccessViolationException ex) { MessageBox.Show("error:" + ex); } } </code></pre>

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