snipplrCallback({"id":40319,"title":"c-bind-a-list-of-valuename-pairs-to-a-combobox","source":"
  1. \/\/ Create a dictionary with value-name pairs. This will be bound to comboBox1<\/span><\/div><\/li>
  2. public<\/span> static<\/span> Dictionary<<\/span>int<\/span>, string<\/span>><\/span> choices =<\/span> new<\/span><\/a> Dictionary<<\/span>int<\/span>, string<\/span>><\/span>(<\/span>)<\/span> <\/div><\/li>
  3. {<\/span><\/div><\/li>
  4.    {<\/span> 100<\/span>, "Arthur"<\/span>}<\/span>,<\/div><\/li>
  5.    {<\/span> 200<\/span>, "Ford"<\/span> }<\/span>,<\/div><\/li>
  6.    {<\/span> 300<\/span>, "Trillian"<\/span>}<\/span>,<\/div><\/li>
  7.    {<\/span> 400<\/span>, "Zaphod"<\/span>}<\/span>, <\/div><\/li>
  8. }<\/span>;<\/span><\/div><\/li>
  9.  <\/div><\/li>
  10. \/\/ Create an enum. This will be bound to comboBox2<\/span><\/div><\/li>
  11. public<\/span> enum<\/span> MyEnumType<\/div><\/li>
  12. {<\/span><\/div><\/li>
  13.    Sunday=<\/span>0<\/span>,<\/div><\/li>
  14.    Monday=<\/span>1<\/span>,<\/div><\/li>
  15.    Tuesday=<\/span>2<\/span>,<\/div><\/li>
  16.    Wednesday=<\/span>3<\/span>,<\/div><\/li>
  17.    Thursday=<\/span>4<\/span>,<\/div><\/li>
  18.    Friday=<\/span>5<\/span>,<\/div><\/li>
  19.    Saturday=<\/span>6<\/span>,<\/div><\/li>
  20. }<\/span><\/div><\/li>
  21.  <\/div><\/li>
  22. \/\/ In the form Load event, bind the combobox to the data source.<\/span><\/div><\/li>
  23. private<\/span> void<\/span> Form1_Load(<\/span>object<\/span> sender, EventArgs e)<\/span><\/div><\/li>
  24. {<\/span><\/div><\/li>
  25.    \/\/ Bind comboBox1 and set a default.<\/span><\/div><\/li>
  26.    comboBox1.<\/span>DataSource<\/span> =<\/span> new<\/span><\/a> BindingSource(<\/span>choices, null<\/span>)<\/span>;<\/span> <\/div><\/li>
  27.    comboBox1.<\/span>DisplayMember<\/span> =<\/span> "Value"<\/span>;<\/span> <\/div><\/li>
  28.    comboBox1.<\/span>ValueMember<\/span> =<\/span> "Key"<\/span>;<\/span><\/div><\/li>
  29.    comboBox1.<\/span>SelectedValue<\/span> =<\/span> 300<\/span>;<\/span><\/div><\/li>
  30.  <\/div><\/li>
  31.    \/\/ Bind comboBox2 and set a default.<\/span><\/div><\/li>
  32.    comboBox2.<\/span>DataSource<\/span> =<\/span> Enum<\/span>.<\/span>GetValues<\/span>(<\/span>typeof<\/span><\/a>(<\/span>MyEnumType)<\/span>)<\/span>;<\/span><\/div><\/li>
  33.    comboBox2.<\/span>SelectedItem<\/span> =<\/span> MyEnumType.<\/span>Friday<\/span>;<\/span><\/div><\/li>
  34. }<\/span><\/div><\/li>
  35.  <\/div><\/li>
  36. private<\/span> void<\/span> comboBox1_SelectedIndexChanged(<\/span>object<\/span> sender, EventArgs e)<\/span><\/div><\/li>
  37. {<\/span><\/div><\/li>
  38.    label1.<\/span>Text<\/span> =<\/span> Convert.<\/span>ToString<\/span>(<\/span>comboBox1.<\/span>SelectedValue<\/span>)<\/span>;<\/span> \/\/ Initially shows "300" while combo shows "Trillian".<\/span><\/div><\/li>
  39. }<\/span><\/div><\/li>
  40.  <\/div><\/li>
  41. private<\/span> void<\/span> comboBox2_SelectedIndexChanged(<\/span>object<\/span> sender, EventArgs e)<\/span><\/div><\/li>
  42. {<\/span><\/div><\/li>
  43.    label2.<\/span>Text<\/span> =<\/span> Convert.<\/span>ToString<\/span>(<\/span>(<\/span>int<\/span>)<\/span>comboBox2.<\/span>SelectedItem<\/span>)<\/span>;<\/span> \/\/ Initially shows "5" while the combo shows "Friday".<\/span><\/div><\/li>
  44. }<\/span><\/div><\/li><\/ol><\/pre>","link":"https:\/\/snipplr.com\/view\/40319\/c-bind-a-list-of-valuename-pairs-to-a-combobox"});