Hi @AaronDev,
Welcome to the Ext.NET forums!
Honestly, I am a bit surprised why there is no such a setting to scroll to the selected item (also I would expect it to be true by default).
As a solution, I can suggest to listen to the Expand event and scroll.
Example
<%@ Page Language="C#" %>
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
if (!X.IsAjaxRequest)
{
object[] data = new object[50];
for (int i = 0; i < 50; i++)
{
data[i] = new object[] { i, "Item" + i };
}
this.ComboBox1.GetStore().DataSource = data;
}
}
</script>
<!DOCTYPE html>
<html>
<head runat="server">
<title>Ext.NET v2 Example</title>
<script>
var onExpand = function() {
var me = this,
picker = me.picker,
selected, itemNode;
if (picker.getSelectionModel().hasSelection()) {
selected = picker.getSelectionModel().getSelection()[0];
itemNode = picker.getNode(selected);
if (itemNode) {
picker.listEl.scrollChildIntoView(itemNode, false);
}
}
};
</script>
</head>
<body>
<form runat="server">
<ext:ResourceManager runat="server" />
<ext:ComboBox
ID="ComboBox1"
runat="server"
DisplayField="text"
ValueField="value">
<Store>
<ext:Store runat="server">
<Model>
<ext:Model runat="server">
<Fields>
<ext:ModelField Name="value" />
<ext:ModelField Name="text" />
</Fields>
</ext:Model>
</Model>
<Reader>
<ext:ArrayReader />
</Reader>
</ext:Store>
</Store>
<Listeners>
<Expand Fn="onExpand" />
</Listeners>
</ext:ComboBox>
</form>
</body>
</html>
