https://github.com/syncfusionexamples/xamarin-treeview-item-height-customization

This repository contains the sample which demonstrates how to autofit the TreeView item height based on its content size
https://github.com/syncfusionexamples/xamarin-treeview-item-height-customization

autofit treeview treeviewnode xamarin xamarin-forms

Last synced: 27 days ago
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This repository contains the sample which demonstrates how to autofit the TreeView item height based on its content size

• Host: GitHub
• URL: https://github.com/syncfusionexamples/xamarin-treeview-item-height-customization
• Owner: SyncfusionExamples
• Created: 2019-07-19T10:31:39.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2024-02-15T13:46:51.000Z (11 months ago)
• Last Synced: 2024-04-14T12:07:22.641Z (9 months ago)
• Topics: autofit, treeview, treeviewnode, xamarin, xamarin-forms
• Homepage:
• Size: 593 KB
• Stars: 0
• Watchers: 1
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# How to autofit the items based on the content in Xamarin Forms TreeView?

In TreeView, you can customize each item size by using the [QueryNodeSize](https://help.syncfusion.com/cr/xamarin/Syncfusion.SfTreeView.XForms~Syncfusion.XForms.TreeView.SfTreeView~QueryNodeSize_EV.html) event. In this event, the [Handled](https://help.syncfusion.com/cr/xamarin/Syncfusion.SfTreeView.XForms~Syncfusion.XForms.TreeView.QueryNodeSizeEventArgs~Handled.html) property indicates whether to set specified size for an item or not by its Boolean value. This event is raised when an item comes in view with the [QueryNodeSizeEventArgs](https://help.syncfusion.com/cr/xamarin/Syncfusion.SfTreeView.XForms~Syncfusion.XForms.TreeView.QueryNodeSizeEventArgs.html) argument.

```xml

    

       

    

    

       

       

    

```

The [QueryNodeSizeEventArgs.GetActualNodeHeight](https://help.syncfusion.com/cr/cref_files/xamarin/Syncfusion.SfTreeView.XForms~Syncfusion.XForms.TreeView.QueryNodeSizeEventArgs~GetActualNodeHeight.html) method of [QueryNodeSizeEventArgs](https://help.syncfusion.com/cr/xamarin/Syncfusion.SfTreeView.XForms~Syncfusion.XForms.TreeView.QueryNodeSizeEventArgs.html) is used to get the measured height of the item based on content and it is set to the [QueryNodeSizeEventArgs.Height](https://help.syncfusion.com/cr/cref_files/xamarin/Syncfusion.SfTreeView.XForms~Syncfusion.XForms.TreeView.QueryNodeSizeEventArgs~Height.html) property.

```c#

private void TreeView_QueryNodeSize(object sender, QueryNodeSizeEventArgs e)

{

    if (e.Node.Level == 0)

    {

        //Returns speified item height for item.

        e.Height = 200;

        e.Handled = true;

    }

    else

    {

        // Returns measured height based on the content loaded.

        e.Height = e.GetActualNodeHeight();

        e.Handled = true;

    }

}

```