protected async System.Threading.Tasks.Task Tree0Expand(TreeExpandEventArgs args)
{
var o = args.Value as Order;
Console.WriteLine("PCOUNT:" + o.OrderDetails.Count());
Console.WriteLine("PNAME:" + o.OrderDetails.First().Product.ProductName);
}
internal async Task ExpandItem(RadzenTreeItem item)
{
var args = new TreeExpandEventArgs()
{
Text = item?.Text,
Value = item?.Value,
Children = new TreeItemSettings()
};
await Expand.InvokeAsync(args);
if (args.Children.Data != null)
{
var childContent = new RenderFragment(builder =>
{
Func <object, string> text = null;
var children = args.Children;
foreach (var data in children.Data)
{
if (text == null)
{
text = children.Text ?? Getter <string>(data, children.TextProperty);
}
RenderTreeItem(builder, data, children.Template, text, children.HasChildren, children.Expanded, children.Selected);
builder.CloseComponent();
}
});
item.RenderChildContent(childContent);
if (AllowCheckBoxes && AllowCheckChildren && args.Children.Data != null)
{
if (CheckedValues != null && CheckedValues.Contains(item.Value))
{
await SetCheckedValues(CheckedValues.Union(args.Children.Data.Cast <object>().Except(UncheckedValues)));
}
else
{
await SetCheckedValues(CheckedValues.Except(args.Children.Data.Cast <object>()));
}
}
}
else if (item.Data != null)
{
if (AllowCheckBoxes && AllowCheckChildren && item.Data != null)
{
if (CheckedValues != null && CheckedValues.Contains(item.Value))
{
await SetCheckedValues(CheckedValues.Union(item.Data.Cast <object>().Except(UncheckedValues)));
}
else
{
await SetCheckedValues(CheckedValues);
}
}
}
}
protected async System.Threading.Tasks.Task Tree0Expand(TreeExpandEventArgs args)
{
var northwindGetProductsResult = await Northwind.GetProducts(new Query()
{
Filter = $@"i => i.CategoryID == @0", FilterParameters = new object[] { (args.Value as Category).CategoryID }
});
args.Children.Data = northwindGetProductsResult;
args.Children.TextProperty = "ProductName";
args.Children.HasChildren = (product) => false;
}
protected void LoadDirectory(TreeExpandEventArgs args)
{
CurrentDirectory = args.Value as string;
// Only get the folders not the files
args.Children.Data =
Directory.EnumerateFileSystemEntries(CurrentDirectory)
.Where(x => !x.Contains("."));
args.Children.Text = GetTextForNode;
args.Children.HasChildren =
(path) => Directory.Exists((string)path);
args.Children.Template = FileOrFolderTemplate;
}
/// <summary>
/// Determines how the children of a node should be designed
/// </summary>
/// <param name="args"> Holds the children nodes </param>
public static void OnExpand(TreeExpandEventArgs args)
{
args.Children.Data = ((TreeNode)args.Value).Children;
args.Children.Text = TextSelector;
args.Children.HasChildren = (node) =>
{
if (node is TreeNode)
{
return(((TreeNode)node).HasChildren);
}
else
{
return(false);
}
};
args.Children.Template = TreeDesign;
args.Children.Expanded = ((node) => { return(((BaseNode)node).IsExpanded); });
((BaseNode)(args.Value)).IsExpanded = true;
}
/// <summary>
/// Used only for File Tree, calls the TreeDesignFiles method instead of TreeDesign
/// </summary>
/// <param name="args"> Holds the nodes to add the expansion preferences to</param>
public static void OnExpandFiles(TreeExpandEventArgs args)
{
OnExpand(args);
args.Children.Template = TreeDesignFiles;
}
