How to restrict decimal input during editing in .NET MAUI DataGrid

This sample shows how to restrict decimal input in a Syncfusion .NET MAUI SfDataGrid numeric column so it accepts only whole numbers and completely blocks decimal input. Using this approach, users cannot type a decimal point and values remain integers while editing the numeric column.

You can achieve this by replacing the default numeric cell renderer and applying an integer-only edit mask to the underlying SfNumericEntry during edit mode. That means, set SfNumericEntry's CustomFormat as "$00000". So decimals are blocked at the input level in numeric cell. You can also keep the column's display format as "0" for consistent integer formatting.

    public class CustomTextRenderer : DataGridNumericCellRenderer
    {
        public override void OnInitializeEditView(DataColumnBase dataColumn, SfNumericEntry view)
        {
            base.OnInitializeEditView(dataColumn, view);

            if (view != null && view is SfNumericEntry entry)
            {
                var value = dataColumn.CellValue;

                if (dataColumn != null && dataColumn.DataGridColumn != null && dataColumn.DataGridColumn.MappingName == "Qty")
                {
                    entry.CustomFormat = "$00000";
                }
            }
        }

    }