Trees
Configuring and customizing Trees to organize and manage the backoffice interface effectively.
A tree is a hierarchical structure that organizes sections into sub-sections. It appears in the main side panel of the Umbraco interface. In Umbraco UI Builder, each section can only have one tree definition, but you can use folder nodes to organize the tree.

Configuring a Umbraco UI Builder Section Tree
The tree configuration for Umbraco UI Builder sections is part of the Section
config builder and is accessed via its Tree
method.
Using the Tree()
Method
Tree()
MethodThis method defines the structure and behavior of a tree within a section.
Method Syntax
Tree(Lambda treeConfig = null) : TreeConfigBuilder
Example
sectionConfig.Tree(treeConfig => {
...
});
Adding a Tree to an Existing Section
To add a tree to an existing section, use one of the AddTree
methods from the WithSection
config builder.
Using the AddTree()
method
AddTree()
methodThis method adds a tree to the current section, specifying its name and icon.
Method Syntax
AddTree(string name, string icon, Lambda treeConfig = null) : TreeConfigBuilder
Example
withSectionConfig.AddTree("My Tree", "icon-folder", treeConfig => {
...
});
Grouping Trees with AddTree()
Method
AddTree()
MethodThis method adds a tree to the current section under a specified group.
Method Syntax
AddTree(string groupName, string name, string icon, Lambda treeConfig = null) : TreeConfigBuilder
Example
withSectionConfig.AddTree("My Group", "My Tree", "icon-folder", treeConfig => {
...
});
Using AddTreeBefore()
to Position a Tree
AddTreeBefore()
to Position a TreeThis method adds a tree to the current section before the tree with the specified alias.
Method Syntax
AddTreeBefore(string treeAlias, string name, string icon, Lambda treeConfig = null) : TreeConfigBuilder
Example
withSectionConfig.AddTreeBefore("member", "My Tree", "icon-folder", treeConfig => {
...
});
Using AddTreeAfter()
to Position a Tree
AddTreeAfter()
to Position a TreeThis method adds a tree to the current section after the tree with the specified alias.
Method Syntax
AddTreeAfter(string treeAlias, string name, string icon, Lambda treeConfig = null) : TreeConfigBuilder
Example
withSectionConfig.AddTreeAfter("member", "My Tree", "icon-folder", treeConfig => {
...
});
Changing the Tree Icon Color
Using the SetIconColor()
Method
SetIconColor()
MethodThis method changes the color of the tree’s icon. The available options are black
, green
, yellow
, orange
, blue
, or red
.
Only trees in existing sections have an icon. Trees in Umbraco UI Builder sections display the tree contents directly.
Method Syntax
SetIconColor(string color) : TreeConfigBuilder
Example
collectionConfig.SetIconColor("blue");
Adding a Group to a Tree
Using the AddGroup()
Method
AddGroup()
MethodThis method adds a group to the current tree with the specified name.
Only trees in Umbraco UI Builder sections support groups.
Method Syntax
AddGroup(string name, Lambda groupConfig = null) : GroupConfigBuilder
Example
treeConfig.AddGroup("Settings", groupConfig => {
...
});
Adding a Folder to a Tree or Group
Using the AddFolder()
Method
AddFolder()
MethodThis method adds a folder node inside a tree or group, using the default folder icon. For more details, see the Folders article.
Method Syntax
AddFolder(string name, Lambda folderConfig = null) : FolderConfigBuilder
Example
treeConfig.AddFolder("Settings", folderConfig => {
...
});
Using the AddFolder()
Method with Custom Icon
AddFolder()
Method with Custom IconThis method adds a folder with a specified icon inside a tree or group. For more details, see the Folders article.
Method Syntax
AddFolder(string name, string icon, Lambda folderConfig = null) : FolderConfigBuilder
Example
treeConfig.AddFolder("Settings", "icon-settings", folderConfig => {
...
});
Adding a Collection to a Tree or Group
Using the AddCollection<>()
Method
AddCollection<>()
MethodThis method adds a collection to the current tree or group, specifying its names, descriptions, and default icons. The ID property must be defined. For more details, see the Collections article.
Method Syntax
AddCollection<TEntityType>(
Lambda idFieldExpression,
string nameSingular,
string namePlural,
string description,
Lambda collectionConfig = null
) : CollectionConfigBuilder<TEntityType>
Example
treeConfig.AddCollection<Person>(
p => p.Id,
"Person",
"People",
"A collection of people",
collectionConfig => {
...
}
);
Using the AddCollection<>()
Method with Icons
AddCollection<>()
Method with IconsThis method adds a collection to the current tree or group, specifying its names, descriptions, and custom icons. The ID property must be defined. For more details, see the Collections article.
Method Syntax
AddCollection<TEntityType>(
Lambda idFieldExpression,
string nameSingular,
string namePlural,
string description,
string iconSingular,
string iconPlural,
Lambda collectionConfig = null
) : CollectionConfigBuilder<TEntityType>
Example
treeConfig.AddCollection<Person>(
p => p.Id,
"Person",
"People",
"A collection of people",
"icon-umb-users",
"icon-umb-users",
collectionConfig => {
...
}
);
Extending an Existing Tree
To extend existing trees, call the WithTree
method on a WithSectionConfigBuilder
instance.
Using the WithTree()
Method
WithTree()
MethodThis method starts a sub-configuration for an existing tree with the specified alias.
Method Syntax
WithTree(string alias, Lambda treeConfig = null) : WithTreeConfigBuilder
Example
sectionConfig.WithTree("content", withTreeConfig => {
...
});
Adding a Context App to an Existing Tree
Using the AddContextApp()
Method
AddContextApp()
MethodThis method adds a context app with the specified name and default icon. For more details, see the Context Apps article.
Method Syntax
AddContextApp(string name, Lambda contextAppConfig = null) : ContextAppConfigBuilder
Example
withTreeConfig.AddContextApp("Comments", contextAppConfig => {
...
});
Using the AddContextApp()
Method with Custom Icon
AddContextApp()
Method with Custom IconThis method adds a context app with the specified name and custom icon. For more details, see the Context Apps article.
Method Syntax
AddContextApp(string name, string icon, Lambda contextAppConfig = null) : ContextAppConfigBuilder
Example
withTreeConfig.AddContextApp("Comments", "icon-chat", contextAppConfig => {
...
});
Adding a Context App Before or After Another Context App
Using the AddContextApp()
Method Before Another Context App
AddContextApp()
Method Before Another Context AppThis method adds a context app with the specified name and default icon before the specified context app alias. For more information, see the Context Apps article.
Method Syntax
AddContextAppBefore(string beforeAlias, string name, Lambda contextAppConfig = null) : ContextAppConfigBuilder
Example
withTreeConfig.AddContextAppBefore("umbContent", "Comments", contextAppConfig => {
...
});
Using the AddContextApp()
Method with Custom Icon Before Another Context App
AddContextApp()
Method with Custom Icon Before Another Context AppThis method adds a context app with the specified name and custom icon before the specified context app alias. For more information, see the Context Apps article.
Method Syntax
AddContextAppBefore(string beforeAlias, string name, string icon, Lambda contextAppConfig = null) : ContextAppConfigBuilder
Example
withTreeConfig.AddContextAppBefore("umbContent", "Comments", "icon-chat", contextAppConfig => {
...
});
Using the AddContextApp()
Method After Another Context App
AddContextApp()
Method After Another Context AppThis method adds a context app with the specified name and default icon after the specified context app alias. For more information, see the Context Apps article.
Method Syntax
AddContextAppAfter(string afterAlias, string name, Lambda contextAppConfig = null) : ContextAppConfigBuilder
Example
withTreeConfig.AddContextAppAfter("umbContent", "Comments", contextAppConfig => {
...
});
Using the AddContextApp()
Method with Custom Icon After Another Context App
AddContextApp()
Method with Custom Icon After Another Context AppThis method adds a context app with the specified name and custom icon after the specified context app alias. For more information, see the Context Apps article.
Method Syntax
AddContextAppAfter(string afterAlias, string name, string icon, Lambda contextAppConfig = null) : ContextAppConfigBuilder
Example
withTreeConfig.AddContextAppAfter("umbContent", "Comments", "icon-chat", contextAppConfig => {
...
});
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