private void TxtKeyword_Completed(object sender, EventArgs e)
{
var curKeyword = txtKeyword.Text.Trim();
if (curKeyword.Equals(oldKeyword, StringComparison.OrdinalIgnoreCase))
{
return;
}
else
{
TheTreeView.Clear();
if (curKeyword.Equals(""))
{
TheTreeView.RootModels = rootModelItems;
TheTreeView.FirstCreateUIElement();
oldKeyword = "";
return;
}
var search_result = new ObservableCollection <TreeNodeModel>();
var found = TreeViewEx.SearchModels(rootModelItems, curKeyword.ToUpper(), ref search_result);
TheTreeView.RootModels = search_result;
TheTreeView.FirstCreateUIElement();
oldKeyword = curKeyword;
}
}
private void initTree()
{
Stopwatch sw = new Stopwatch();
if (_IsLoaded)
{
return;
}
_IsLoaded = true;
sw.Start();
/*
* var assembly = typeof(MainPage).GetTypeInfo().Assembly;
* var stream = assembly.GetManifestResourceStream("XamarinFormsTreeView.Resource.XamlItemGroups.xml");
* string xml;
* using (var reader = new StreamReader(stream))
* {
* xml = reader.ReadToEnd();
* }
* sw.Stop();
*
* Console.WriteLine("Performance test, Load xml: {0}ms", sw.ElapsedMilliseconds);
* sw.Restart();
*
* var xamlItemGroups = (XamlItemGroup)DeserialiseObject(xml, typeof(XamlItemGroup));
* sw.Stop();
* Console.WriteLine("Performance test, DeserialiseObject xml: {0}ms", sw.ElapsedMilliseconds);
*
* sw.Restart();
*
* var rootNodes = ProcessXamlItemGroups(xamlItemGroups, true);
* sw.Stop();
* Console.WriteLine("Performance test, ProcessXamlItemGroups: {0}ms", sw.ElapsedMilliseconds);
*
* sw.Restart();
* //foreach (var node in rootNodes)
* //{
* // var xamlItemGroup = (XamlItemGroup)node.BindingContext;
* //}
*
* ////TheTreeView.RootNodes = rootNodes;
*/
rootModelItems = new ObservableCollection <TreeNodeModel>();
for (int i = 0; i < 5; i++)
{
var subItem = new TreeNodeModel()
{
Title = string.Format("Lvel 1: {0}", i)
};
for (int j = 0; j < 5; j++)
{
var subItem2 = new TreeNodeModel()
{
Title = string.Format("Lvel 2: {0}/{1}", i, j)
};
subItem.SubItems.Add(subItem2);
for (int k = 0; k < 5; k++)
{
var subItem3 = new TreeNodeModel()
{
Title = string.Format("Lvel 3: {0}/{1}/{2}", i, j, k)
};
subItem2.SubItems.Add(subItem3);
for (int m = 0; m < 5; m++)
{
var subItem4 = new TreeNodeModel()
{
Title = string.Format("Lvel 4: {0}/{1}/{2}/{3}", i, j, k, m)
};
subItem3.SubItems.Add(subItem4);
}
}
}
rootModelItems.Add(subItem);
}
TheTreeView.RootModels = rootModelItems;
TheTreeView.FirstCreateUIElement();
sw.Stop();
Console.WriteLine("Performance test, RootNodes assigned: {0}ms", sw.ElapsedMilliseconds);
}
