How to customize the Dropdown height of the ComboBox Editor in .NET MAUI DataForm (SfDataForm)?

In the Syncfusion® .NET MAUI DataForm, you can customize the drop-down height of a ComboBox editor using the MaxDropDownHeight property.

C#:

Register the editors using the RegisterEditor method and initiate the GenerateDataFormItem event handler.

protected override void OnAttachedTo(SfDataForm dataForm)
{
   base.OnAttachedTo(dataForm);
   dataForm.ItemsSourceProvider = new ItemSourceProvider();
   dataForm.RegisterEditor("Address", DataFormEditorType.MultilineText);
   dataForm.RegisterEditor("City", DataFormEditorType.ComboBox);
   dataForm.GenerateDataFormItem += OnGenerateDataFormItem;
}

C#:

You can customize the dropdown height using the OnGenerateDataFormItem event, setting the MaxDropDownHeight property.

private void OnGenerateDataFormItem(object sender, GenerateDataFormItemEventArgs e)
{
   if (e.DataFormItem != null && e.DataFormItem is DataFormComboBoxItem comboBox)
   {
       comboBox.MaxDropDownHeight = 110;
   }
}

Output:

Conclusion:

I hope you enjoyed learning how to customize the dropdown height of the ComboBox editor in the .NET MAUI DataForm (SfDataForm).

Refer to our .NET MAUI DataForm feature tour page for its other groundbreaking feature representations. You can also explore our .NET MAUI DataForm documentation to understand how to present and manipulate data.

For current customers, check out our .NET MAUI components from the License and Downloads page. If you are new to Syncfusion®, try our 30-day free trial to check out our .NET MAUI DataForm and other .NET MAUI components.

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