autocomplete combobox

Dette er min kode til min applikation og autocomplete combobox


private void dropdownitems()
    {
   
      foreach (string arrayListItem in arrList)
      {
        //Adds all items from file in combobox items list
        cbxTimeRegistryList.Items.Add(arrayListItem);
        //Sets up autocomplete functionality for combobox
        autoCompleteStrings.Add(arrayListItem);
      }

      cbxTimeRegistryList.AutoCompleteCustomSource = autoCompleteStrings;
      cbxTimeRegistryList.AutoCompleteMode = AutoCompleteMode.Suggest;
      cbxTimeRegistryList.AutoCompleteSource = AutoCompleteSource.CustomSource;
     
      cbxTimeRegistryList.Items.Add(cbxTimeRegistryList.Text);
   
    }


private void ReadStringsFromFile()
    {
      //Reads in textfile
      FileStream f = new FileStream("C:\\timeregistrytextstrings.txt", FileMode.Open, FileAccess.Read);
      StreamReader sr = new StreamReader(f);


      string line;
      while ((line = sr.ReadLine()) != null)
      {
        //while loop adds all items from textfile in combobox items list
        cbxTimeRegistryList.Items.Add(line);
     
      }

      //stream close
      sr.Close();
      //file close
      f.Close();

    }

private void SearchStringsInFile()
    {
      FileStream f = new FileStream("C:\\timeregistrytextstrings.txt", FileMode.Open, FileAccess.Read);
      StreamReader testTxt = new StreamReader(f);

      bool success = false;
      bool IsFileEmpty = true;
      string allRead;
      while (!testTxt.EndOfStream)
      {
        IsFileEmpty = false;
        allRead = testTxt.ReadLine();
        if (allRead == cbxTimeRegistryList.Text)//ExactMatch(cbxTimeRegistryList.Text, allRead))//If the match is found in allRead
        {
          success = true;
        }

      }
      testTxt.Close();
      f.Close();

         
      if (success == false)
          {
          FileStream fwrite = new FileStream("C:\\timeregistrytextstrings.txt", FileMode.Append, FileAccess.Write);
            StreamWriter sw = new StreamWriter(fwrite);
            cbxTimeRegistryList.Items.Add(cbxTimeRegistryList.Text);
            if (IsFileEmpty == false)
            {
              sw.Write("");
            }
            sw.Write(cbxTimeRegistryList.Text + "\r\n");
            sw.Close();
            fwrite.Close();
          }
   
      cbxTimeRegistryList.Text = "";
    }


    private void cbxTimeRegistryList_KeyPress(object sender, KeyPressEventArgs e)
    {
     
      //ComboBox comboBox = (ComboBox)sender;

      //if (Char.IsControl(e.KeyChar))
      //  return;

      //string ToFind = cbxTimeRegistryList.Text.Substring(0, cbxTimeRegistryList.SelectionStart) + e.KeyChar;
      //int Index = cbxTimeRegistryList.FindStringExact(ToFind);

      //if (Index == -1)
      //  Index = cbxTimeRegistryList.FindString(ToFind);

      //if (Index == -1)
      //  return;

      //cbxTimeRegistryList.SelectedIndex = Index;
      //cbxTimeRegistryList.SelectionStart = ToFind.Length;
      //cbxTimeRegistryList.SelectionLength = cbxTimeRegistryList.Text.Length - cbxTimeRegistryList.SelectionStart;

      //e.Handled = true;
      //cbxTimeRegistryList.SelectionStart = cbxTimeRegistryList.Text.Length;


      cbxTimeRegistryList.DroppedDown = true;
      Cursor.Current = Cursors.Default;
   

    }

En standard Autocompleteboks i .Net, kan kun lave prefix søgninger.

Dvs. at den kun foreslår ord som starter med det du søger på.

Du kan evt. udvide din autoCompleteStrings med firmanavn-50, eller udvikle din egen tekstboks.

http://www.dreamincode.net/forums/topic/34785-create-an-autocomplete-textbox-control-in-c%23/