How to remove a thousand separators in the numeric text field in Xamarin.Forms DataForm (SfDataForm)

You can disabled the thousand seperators for numeric editor in Xamarin.Forms SfDataForm by using EnableGroupSeparator property.

Refer to the online user guide documentation for customize the editor in DataForm using AutoGeneratingDataFormItem event.

You can also refer to the following article.

https://www.syncfusion.com/kb/11527/how-to-remove-a-thousand-separators-in-the-numeric-text-field-in-xamarin-forms-dataform

C#

Set the EnableGroupSeparator property into false inside the AutoGeneratingDataFormItem event.

public class DataFormBehavior : Behavior<ContentPage>
    {
        SfDataForm dataForm;
        protected override void OnAttachedTo(ContentPage bindable)
        {
            base.OnAttachedTo(bindable);
            dataForm = bindable.FindByName<SfDataForm>("dataForm");
            dataForm.AutoGeneratingDataFormItem += DataForm_AutoGeneratingDataFormItem;
        }
        private void DataForm_AutoGeneratingDataFormItem(object sender, AutoGeneratingDataFormItemEventArgs e)
        {
            if (e.DataFormItem != null)
            {
                if (e.DataFormItem.Name == "BirthYear")
                {
                    (e.DataFormItem as DataFormNumericItem).EnableGroupSeparator = false;
                }
            }
        }
        protected override void OnDetachingFrom(ContentPage bindable)
        {
            base.OnDetachingFrom(bindable);
            dataForm.AutoGeneratingDataFormItem -= DataForm_AutoGeneratingDataFormItem;
        }
  }