1: AutoComplete(ComboBox cb, System.Windows.Forms.KeyPressEventArgs e, bool blnLimitToList)

   1: // AutoComplete

   2: public void AutoComplete(ComboBox cb, System.Windows.Forms.KeyPressEventArgs e)

   3: {

   4:     this.AutoComplete(cb, e, false);

   5: }

   6:  

   7: public void AutoComplete(ComboBox cb, System.Windows.Forms.KeyPressEventArgs e, bool blnLimitToList)

   8: {

   9:     string strFindStr = "";

  10:  

  11:     if (e.KeyChar == (char)8) 

  12:     {

  13:         if (cb.SelectionStart <= 1) 

  14:         {

  15:             cb.Text = "";

  16:             return;

  17:         }

  18:  

  19:         if (cb.SelectionLength == 0)

  20:             strFindStr = cb.Text.Substring(0, cb.Text.Length - 1);

  21:         else 

  22:             strFindStr = cb.Text.Substring(0, cb.SelectionStart - 1);

  23:     }

  24:     else 

  25:     {

  26:         if (cb.SelectionLength == 0)

  27:             strFindStr = cb.Text + e.KeyChar;

  28:         else

  29:             strFindStr = cb.Text.Substring(0, cb.SelectionStart) + e.KeyChar;

  30:     }

  31:  

  32:     int intIdx = -1;

  33:  

  34:     // Search the string in the ComboBox list.

  35:  

  36:     intIdx = cb.FindString(strFindStr);

  37:  

  38:     if (intIdx != -1)

  39:     {

  40:         cb.SelectedText = "";

  41:         cb.SelectedIndex = intIdx;

  42:         cb.SelectionStart = strFindStr.Length;

  43:         cb.SelectionLength = cb.Text.Length;

  44:         e.Handled = true;

  45:     }

  46:     else

  47:     {

  48:         e.Handled = blnLimitToList;

  49:     }

  50:  

  51: }