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<h1>ASP.NET - Data Binding</h1>
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<p class="intro">We may use data binding to fill lists with selectable items from
an imported data
source, like a database, an XML file, or a script.</p>
<hr />
<h2>Data Binding</h2>
<p>The following controls are list controls which support data binding:</p>
<ul>
<li>asp:RadioButtonList</li>
<li>asp:CheckBoxList</li>
<li>asp:DropDownList</li>
<li>asp:Listbox</li>
</ul>
<p>The selectable items
in each of the above controls are usually defined by one or more asp:ListItem controls, like this:</p>
<table class="ex" border="1" width="100%">
<tr><td>
<pre><html>
<body></pre>
<pre><form runat="server">
<asp:RadioButtonList id="countrylist" runat="server">
<asp:ListItem value="N" text="Norway" />
<asp:ListItem value="S" text="Sweden" />
<asp:ListItem value="F" text="France" />
<asp:ListItem value="I" text="Italy" />
</asp:RadioButtonList>
</form></pre>
<pre></body>
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<p>However, with data binding we may use a separate
source, like a database, an XML file, or a
script to fill the list with selectable items.</p>
<p>By using an imported source, the data is separated from the HTML,
and any changes to the items are made in the separate data source.</p>
<p>In the next three chapters, we will describe how to bind data from a scripted data source.</p>
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