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.
In this particular case, the control is populated with 100 000. When all items are selected and we click on a single note all other items will be de-selected. This operation takes more time than expected. The de-selection process must be improved.
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.
Hi All,
I have made User control for custom node, in this user control i have used following controls
1 RadLabel (no of control - 3)
2 RadPanel (no of control -1)
3 PictureBox (no of Control - 4 )
4 TableLayoutPanel (no of control -3)
Means i have used total 11 controls within my user control.
Height of usercontrol = 146
Width of Usercontrol = 595
I have taken RadTreeView and above UserControl added as Node,following properties of treeview is set
this.radTreeView1.DataSource = Staff.GetStaff();
this.radTreeView1.ParentMember = "ParentID";
this.radTreeView1.ChildMember = "ID";
this.radTreeView1.DisplayMember = "Department";
this.radTreeView1.CreateNodeElement += this.OnCreateNodeElement;
this.radTreeView1.TreeViewElement.AutoSizeItems = true;
this.radTreeView1.ShowRootLines = false;
this.radTreeView1.FullRowSelect = false;
this.radTreeView1.ShowLines = true;
this.radTreeView1.LineStyle = TreeLineStyle.Solid;
this.radTreeView1.LineColor = Color.FromArgb(110, 153, 210);
this.radTreeView1.TreeIndent = 50;
this.radTreeView1.ExpandAll();
But when i run the code it shows like this means my control is not displaying and the property "AutoSizeItems" is not working.
hope for quick reply
To reproduce:
1.Create new RadTreeView
2.Create new ImageList and populate
3.Assign ImageList to RadTreeView
4.Open Property Builder
5.Assign Image to a Node, Apply, Close
6.Re-Open, change Node to a different Image, the previous image remains
Expected: the new image is successfully updated.
Actual: the old image remains:
Workaround: add RadTreeNodes at run time.
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.
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
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