Getting XML data into combobox

Question

I have a windows form with 3 comboboxes and a XML file as following

Answer 1

Usinq LINQ To XML:

var xml = XElement.Parse(
                @"<shrtcutkeys>
                        <Keysmain>
                            <keychars>
                                <key1>
                                    Ctrl
                                </key1>
                                <key1>
                                    Alt
                                </key1>
                                <key1>
                                    Shift
                                </key1>
                            </keychars>
                        </Keysmain>
                        <Seckeys>
                            <keychars>
                                <key2>
                                    Ctrl
                                </key2>
                                <key2>
                                    Alt
                                </key2>
                                <key2>
                                    Shift
                                </key2>
                            </keychars>
                        </Seckeys>
                        <Alphas>
                            <keychars>
                                <key3>
                                    a
                                </key3>
                                <key3>
                                    b
                                </key3>
                                <key3>
                                    c
                                </key3>
                            </keychars>
                        </Alphas>
                    </shrtcutkeys>");

var key1 = xml.Descendants("key1");

foreach (var key in key1)
    comboBox1.Items.Add(key.Value.Trim());

var key2 = xml.Descendants("key2");

foreach (var key in key2)
    comboBox2.Items.Add(key.Value.Trim());

//Do the same for other keys...

Answer 2

I prefer to use Linq2XML:

Load the data into an XDocument:
Either load from file:

var xmlDocument = XDocument.Load(fileName);

or load from a string

var xmlDocument = XDocument.Parse( @"<?xml version=""1.0""?>
<shrtcutkeys>
    <Keysmain>
        <keychars>
            <key1>
                Ctrl
            </key1>
            <key1>
                Alt
            </key1>
            <key1>
                Shift
            </key1>
        </keychars>
    </Keysmain>
    <Seckeys>
        <keychars>
            <key2>
                Ctrl
            </key2>
            <key2>
                Alt
            </key2>
            <key2>
                Shift
            </key2>
        </keychars>
    </Seckeys>
    <Alphas>
        <keychars>
            <key3>
                a
            </key3>
            <key3>
                b
            </key3>
            <key3>
                c
            </key3>
        </keychars>
    </Alphas>
</shrtcutkeys>");

Then you can select desired items

var mainItems = from key in xmlDocument.Descendants("key1")
                select key.Value;
var secKeyItems = from key in xmlDocument.Descendants("key2")
                select key.Value;
var alphaItems = from key in xmlDocument.Descendants("key3")
                select key.Value;

You can now bind each combo to the selected result, like this:

comboBox1.DataSource = mainItems.ToList();

You might want to wash your XML (to remove newlines and spaces)

var mainItems = from key in xmlDocument.Descendants("key1")
                select key.Value.Trim();
var secKeyItems = from key in xmlDocument.Descendants("key2")
                select key.Value.Trim();
var alphaItems = from key in xmlDocument.Descendants("key3")
                select key.Value.Trim();