When the CheckBox of a RadTreeNode is checked programmatically, the Unknown Action parameter needs to be passed to the NodeCheckedChanging/ed event.
To reproduce:
private void RadTreeView1_NodeCheckedChanging(object sender, Telerik.WinControls.UI.RadTreeViewCancelEventArgs e)
{
Console.WriteLine(e.Action);
}
The action is always unknown.
Repro-steps:
- Create a RadTreeView
- Set the TreeViewElement.ExpandTimerInterval to forever (so never auto expand by the timer).
- Enable drag/drop.
- Create an event handler for RadTreeView.DragEnding and make it cancel the drop operation.
- Fill the tree with random nodes and childnodes
- Drag and drop a node to collapsed node with children.
Observed behavior:
- The node is not dropped but the target node is expanded..
Expected behavior:
- The node is not dropped but the target node is NOT expanded, since the operation is cancelled.
Use the following code snippet and compare the filtering performance when using bound and unbound mode:
public RadForm1()
{
InitializeComponent();
this.radTextBox1.TextChanged += this.RadTextBox1_TextChanged;
this.radTextBox2.TextChanged += this.RadTextBox2_TextChanged;
List<Data> list = new List<Data>();
this.radTreeView1.BeginUpdate();
for (int i = 0; i < 100000; i++)
{
list.Add(new Data()
{
Id = i,
Name = "MyData_"+i,
ParentId = -1
}) ;
this.radTreeView1.Nodes.Add("MyData_"+i);
}
this.radTreeView1.EndUpdate();
this.radTreeView2.DisplayMember = "Name";
this.radTreeView2.ParentMember = "ParentId";
this.radTreeView2.DataSource = list;
}
private void RadTextBox2_TextChanged(object sender, EventArgs e)
{
this.radTreeView2.Filter = this.radTextBox2.Text;
}
private void RadTextBox1_TextChanged(object sender, EventArgs e)
{
this.radTreeView1.Filter = this.radTextBox1.Text;
}
}
public class Data
{
public int Id { get; set; }
public string Name { get; set; }
public int ParentId { get; set; }
}Expected behavior: the performance in bound and unbound mode should be quite similar
Actual behavior: the performance is much slower in bound mode
Repro-steps:
- Create a RadTreeView
- Set the TreeViewElement.ExpandTimerInterval to 5 seconds.
- Enable drag/drop.
- Fill the tree with random nodes and childnodes
- Drag a node over other nodes. Make sure you do not hover longer than 5 seconds over a single node. So just move around.
Observed behavior:
- After 5 seconds the node you are just hovering over, is expanding.
Expected behavior:
- No node will automatically expand. Every time a new node is hovered over, the timer will reset.
Add a possibility to set the auto-expand delay on drag-drop in RadTreeView.
Please run the attached sample project and follow the steps illustrated in the gif file. You will notice the following behavior:
If you select multiple items/nodes and then right click on the last selected item/node, the context menu comes up as expected and multiple selection is kept. But if you right click on any other item/node that is selected,the selected nodes become unselected and only the node you are over becomes selected.
The multiple selection is kept in Windows Explorer and VS Solution explorer wne you right click over an already selected node.
Workaround:
public RadForm1()
{
InitializeComponent();
this.radTreeView1.MultiSelect = true;
this.radTreeView1.AllowDefaultContextMenu = true;
}
class CustomTreeViewElement : RadTreeViewElement
{
protected override Type ThemeEffectiveType
{
get
{
return typeof(RadTreeViewElement);
}
}
protected override bool ProcessMouseDown(MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
RadContextMenu menu = this.ContextMenu;
RadTreeNode node = this.GetNodeAt(e.Location);
if (node!=null)
{
node.Selected = true;
}
if (node != null && node.ContextMenu != null)
{
menu = node.ContextMenu;
}
if (menu == null && this.AllowDefaultContextMenu)
{
menu = this.InitializeDefaultContextMenu(node);
}
if (menu != null)
{
RadControl parentControl = (this.ElementTree.Control as RadControl);
if (parentControl != null)
{
menu.ThemeName = parentControl.ThemeName;
menu.DropDown.RightToLeft = parentControl.RightToLeft;
}
TreeViewContextMenuOpeningEventArgs args = new TreeViewContextMenuOpeningEventArgs(node, menu, this);
OnContextMenuOpening(args);
if (!args.Cancel)
{
menu.Show(this.ElementTree.Control, e.Location);
return true;
};
}
}
return base.ProcessMouseDown(e);
}
}
class CustomTreeView : RadTreeView
{
protected override RadTreeViewElement CreateTreeViewElement()
{
return new CustomTreeViewElement();
}
public override string ThemeClassName
{
get
{
return typeof(RadTreeView).FullName;
}
}
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case 0x7b:
return;
}
base.WndProc(ref m);
}
}
Steps to reproduce the issue:
1. Run the example app.
2. Click undo (the last item is removed).
3. Click redo (the last item should be added to the Treeview, it does not)
If I run the application and click undo twice and then redo twice, the things work. The Treeview is not updated if I add and remove the same element instance to the binding list.
Workaround: rebind the treeview after redo or create a new instance of the Element class with the same name and id.
Use the following code:
public RadForm1()
{
InitializeComponent();
// This XML contains a simple tree with a root node having 3 children, the first of which is intended to be Bold
var xml = "<TreeView xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" MultiSelect=\"true\" AllowDragDrop=\"true\" LabelEdit=\"true\" AllowDrop=\"true\"> <Nodes Text=\"New Package\" Expanded=\"true\" ImageKey=\"Package\" Font=\"Microsoft Sans Serif, 8.25pt, style=Bold\"> <Tag xsi:type=\"xsd:string\"><Info><FullName>\\New Package</FullName><ObjectType>Package</ObjectType><IsRunnable>False</IsRunnable><IsContainer>true</IsContainer></Info></Tag> <Nodes Text=\"Query Engine\" ImageKey=\"QueryEngine\" Expanded=\"true\" Font=\"Microsoft Sans Serif, 8.25pt, style=Bold\"> <Tag xsi:type=\"xsd:string\"><Info><FullName>\\Query Engine</FullName><ObjectType>QueryEngine</ObjectType><IsRunnable>true</IsRunnable><IsTableEntity>true</IsTableEntity><IsCut>false</IsCut></Info></Tag> </Nodes> <Nodes Text=\"Connector\" ImageKey=\"Irion.SQLServer\"> <Tag xsi:type=\"xsd:string\"><Info><FullName>\\Connector</FullName><ObjectType>DBConnection</ObjectType><IsCut>false</IsCut></Info></Tag> </Nodes> <Nodes Text=\"Connector Link\" ImageKey=\"DatabaseDatalink\"> <Tag xsi:type=\"xsd:string\"><Info><FullName>\\Connector Link</FullName><ObjectType>DatabaseDatalink</ObjectType><IsRunnable>true</IsRunnable><IsTableEntity>true</IsTableEntity><IsCut>false</IsCut></Info></Tag> </Nodes> </Nodes></TreeView>";
this.radTreeView1.LoadXML(new MemoryStream(System.Text.Encoding.UTF8.GetBytes(xml)));
//make sure that the following 2 nodes are bold:
this.radTreeView1.Nodes[0].Nodes[0].Font = new Font("Microsoft Sans Serif", 8.25F, FontStyle.Bold, GraphicsUnit.Point, 0);
this.radTreeView1.Nodes[0].Nodes[2].Font = new Font("Microsoft Sans Serif", 8.25F, FontStyle.Bold, GraphicsUnit.Point, 0);
var tvx = this.radTreeView1.TreeViewXml;
}The XML returned by the tvx variable is different in 6.0 and 4.7.2. The Font for the node is serialized in 4.7.2:
But the font is missing in 6.0:
If the list separator for the culture is ";"
and you have nodes in RadTreeView that are bold, the following XML will be serialized:
var xml = "<TreeView xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" MultiSelect=\"true\" AllowDragDrop=\"true\" LabelEdit=\"true\" AllowDrop=\"true\"> <Nodes Text=\"New Package\" Expanded=\"true\" ImageKey=\"Package\" Font=\"Microsoft Sans Serif; 8,25pt; style=Bold\"> <Tag xsi:type=\"xsd:string\"><Info><FullName>\\New Package</FullName><ObjectType>Package</ObjectType><IsRunnable>False</IsRunnable><IsContainer>true</IsContainer></Info></Tag> <Nodes Text=\"Query Engine\" ImageKey=\"QueryEngine\" Expanded=\"true\" Font=\"Microsoft Sans Serif; 8,25pt; style=Bold\"> <Tag xsi:type=\"xsd:string\"><Info><FullName>\\Query Engine</FullName><ObjectType>QueryEngine</ObjectType><IsRunnable>true</IsRunnable><IsTableEntity>true</IsTableEntity><IsCut>false</IsCut></Info></Tag> </Nodes> <Nodes Text=\"Connector\" ImageKey=\"Irion.SQLServer\"> <Tag xsi:type=\"xsd:string\"><Info><FullName>\\Connector</FullName><ObjectType>DBConnection</ObjectType><IsCut>false</IsCut></Info></Tag> </Nodes> <Nodes Text=\"Connector Link\" ImageKey=\"DatabaseDatalink\"> <Tag xsi:type=\"xsd:string\"><Info><FullName>\\Connector Link</FullName><ObjectType>DatabaseDatalink</ObjectType><IsRunnable>true</IsRunnable><IsTableEntity>true</IsTableEntity><IsCut>false</IsCut></Info></Tag> </Nodes> </Nodes></TreeView>";
However, if you try to load this layout on another machine where the list separator is "," the nodes wouldn't be bold:
Expected:
Actual:
Workaround: if you change to this, it will be parsed properly: "Microsoft Sans Serif, 8.25pt, style=Bold"
Please use the attached sample project.
Result in 2021.1.326:
Result in 2021.2.511
Please refer to the following code snippet:
Dim root As New RadTreeNode()
root.Expanded = True
root.Text = "Root"
root.Name = "Root"
Me.RadTreeView1.Nodes.Add(root)
Dim telerikTreeNode = New RadTreeNode With
{
.Expanded = True,
.Name = "Child1",
.Text = "Child1",
.Tag = "test",
.Font = New Font("Arial", 12.0F, FontStyle.Regular)
}
Me.RadTreeView1.Nodes("Root").Nodes.Add(telerikTreeNode)
For index = 2 To 5
Dim child As New RadTreeNode()
child.Text = "Child" & index
Me.RadTreeView1.Nodes("Root").Nodes.Add(child)
Next
1. Open Telerik Theme Viewer
2. Choose "Item Containers"
3. Observe "Tree"
4. Choose Theme "Office2019Dark"
Expected: Tree still shows content
Actual: Elements are not visible
Currently we do not support binding to the ToggleState.Indeterminate state automatically because it would require a change in the behavior of the Checked property. If you use the CheckedMember, the ToggleState.Indeterminate state is represent like ToggleState.On.
Workaround:
Subscribe to the NodeFormatting and NodeCheckedChanged events:
void radTreeView1_NodeFormatting(object sender, Telerik.WinControls.UI.TreeNodeFormattingEventArgs e)
{
Child child = e.Node.DataBoundItem as Child;
if (child != null)
{
e.Node.CheckState = child.Status;
}
}
void radTreeView1_NodeCheckedChanged(object sender, Telerik.WinControls.UI.TreeNodeCheckedEventArgs e)
{
Child child = e.Node.DataBoundItem as Child;
if (child != null)
{
child.Status = e.Node.CheckState;
}
}
1. Start WinAppDriver.exe
2. Open the attached sample solution
3. Click "Run all" tests
You will see that the test will not be able to locate any RadTreeNode elements located outside of the first parent node collection. Note that the test uses "FindElementByName("name")" method.
Please run the attached sample project and follow the steps in the attached gif file. You will notice that the nodes are displayed multiple times.
Workaround: it seems that if the BeginUpdate/EndUpdate methods are not used in the PerformNodeMove methods, the issue is not reproducible
Please refer to the attached sample project and try to edit a node. In random situations the Node argument in the Edited event is null or points to a wrong data node:
I am using RadTreeView and setting FullRowSelect = false. This works for Windows7 them but doesn't work for Fluent theme.
Steps to reproduce:
1. Set SortOrder to Ascending
2. Rename a root node