Editable DateTime axis

[OddvarC]

Hi,

I am trying to configure an editable DateTime axis in a graph using xaml. I have tried the following <ni:AxisDateTime Orientation="Horizontal" InteractionMode="EditRange"/>. However, druing runtime if I try to edit the time axis the values I enter is immediately discarded and the value is set back to default. When using eg. integer axis there is no issue. Am I doing something wrong with the time axis?

Brg.

Oddvar

[phansen]

From “immediately discarded”, it sounds like the entered value failed to parse. To investigate the cause, I would suggest attaching a custom edit formatter that uses Parse instead of TryParse, so that you can examine any parse exceptions:

public sealed class CustomValueFormatter : GeneralValueFormatter {
    public override bool TryParse<TData>( string value, ValuePresenterArgs args, out TData parsedValue ) {
        parsedValue = base.Parse<TData>( value, args );
        return true;
    }
}

Here is how you can assign the custom formatter to your axis in XAML:

<ni:AxisDateTime Orientation="Horizontal" InteractionMode="EditRange">
    <ni:AxisDateTime.MajorDivisions>
        <ni:RangeLabeledDivisions>
            <ni:RangeLabeledDivisions.EditRangeValueFormatter>
                <local:CustomValueFormatter />
            </ni:RangeLabeledDivisions.EditRangeValueFormatter>
        </ni:RangeLabeledDivisions>
    </ni:AxisDateTime.MajorDivisions>
</ni:AxisDateTime>

[OddvarC]

Hi Paul,

Thanks! Works without any problems with the CustomValueFormatter. Thus I am not able to investigate what is going wrong in the first place. But as you said, definitely something with the parsing.

Oddvar