textBox, comboBox

I wonder something.
If you for example use a textBox and a comboBox in a Form and want to save something like this:

Code:

comboBox1->Items->Add(textBox1->Text);

This will work if you write something in the textBox1 and press a button this text will appear in the comboBox but when I close the application and open it again, the text will have dissapear from the comboBox.

What is needed here, are we talking about databases to save such things ?

Yes.

How else would you expect the data to save?

You don't need to use a database, you can use text files, xml, or whatever you can think of to load the data from an external source.

Yes, that was what I thought. I had text files in mind to use.

Forget text files! Use XML files. This is after all 2008!

You can do this easy by :

//this code isn't tested but u'll get the idéa

Code:

try{
XmlDocument MyXML = new XmlDocument();
XmlElement MyROOT;
XmlElement MyElement;

//creates a root for you
ROOT = MyXML.CreateElement("mydata");
MyXML.AppendChild(ROOT);

//adds your data inside the root
foreach(string sItem in comboBox1.Items){
MyElement = MyXML.CreateElement("DATA");//creates a node "DATA"
MyElement.InnerText = sItem;//puts your item text|data inside the "DATA" node
ROOT.InsertAfter(MyElement, ROOT.LastChild);
}

//save your XML
MyXML.Save("c:\somefile.xml");
}
catch(Exception e){
Console.Write( e.ToString() );
}

Once saving XML, open your file with notepad or IE, it should look like this inside :

<mydata>
<DATA>text of item in combo box</DATA>
<DATA>text of item in combo box</DATA>
<DATA>text of item in combo box</DATA>
</mydata>

You can get your data back with MyXML.Load("c:\somefile.xml");

and do a loop, something like

Code:

foreach(XmlNode XMLNODE in MyXML.SelectSingleNode("mydata").ChildNodes){
Console.Write( XMLNODE.InnerText );//This will get your data back for you from the XML
}