How to display positive and negative infinity values in GridNumericColumn WPF DataGrid?

WPF DataGrid (SfDataGrid) does not provide direct support to display the infinity symbol in GridNumericColumn. You can display the infinity symbol with a GridNumericColumn can be accomplished by overriding the GridCellNumericRenderer and customizing the OnInitializeEditElement and OnInitializeDisplayElement methods.

//Remove the default numeric cell renderer
this.sfDataGrid.CellRenderers.Remove("Numeric");

// Add the custom numeric cell renderer
this.sfDataGrid.CellRenderers.Add("Numeric", new GridCellNumericRendererExt());


//Custom numeric cell renderer
public class GridCellNumericRendererExt : GridCellNumericRenderer
{

    // Override the OnInitializeDisplayElement method
    public override void OnInitializeDisplayElement(DataColumnBase dataColumn, TextBlock uiElement, object dataContext)
    {

        base.OnInitializeDisplayElement(dataColumn, uiElement, dataContext);
        // Get the value from the datacontext
        var value = (double)dataContext.GetType().GetProperty(dataColumn.GridColumn.MappingName).GetValue(dataContext, null);

        // Check whether the value is infinity or not
        if (double.IsInfinity(value))
        {
            // Set the text as infinity
            uiElement.Text = value.ToString();
        }
    }    

    // Override the OnInitializeEditElement method
    public override void OnInitializeEditElement(DataColumnBase dataColumn, DoubleTextBox uiElement, object dataContext)
    {
        base.OnInitializeEditElement(dataColumn, uiElement, dataContext);
        
        // Get the value from the datacontext
        var value = (double)dataContext.GetType().GetProperty(dataColumn.GridColumn.MappingName).GetValue(dataContext, null);

        // Check whether the value is infinity or not
        if (double.IsInfinity(value))
        {
            // Set the max and min values as infinity
            uiElement.MaxValue = double.PositiveInfinity;
            uiElement.MinValue = double.NegativeInfinity;
        }
    }
}

The screenshot below illustrates the positive and negative infinity values displayed in GridNumericColumn,

Take a moment to peruse the WPF DataGrid - Customize Column Renderer documentation, where you can find about customize column renderer with code examples.

View sample in GitHub.

Conclusion

I hope you enjoyed learning about how to display positive and negative infinity values in GridNumericColumn WPF DataGrid.

You can refer to our WPF DataGrid feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications.

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

If you have any queries or require clarifications, please let us know in the comments section below. You can also contact us through our support forums, Direct-Trac, or feedback portal. We are always happy to assist you!