Changes

HowTo:Implement Custom Filtering

38 bytes added, 09:40, 20 July 2023

/* When One is a Boolean (CheckBox) */

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On Note that this example uses UWPxaml syntax:

<controls:EvalExpression x:Name="Bool_FilterExpression" Expression="(INPUT==false) ? "true==true" : EXP" Context="{Binding}">

<controls:EvalExpressionParameter Name="EXP" Value="{Binding ElementName=CheckBox, Path=IsChecked, Converter={StaticResource StringFormatConverter}, ConverterParameter='Item.Values["MP_BOOL"]=="{0}"'}" />

* The EvalExpressionParameter 'EXP' similarly can be simplified, as it does not need to make a string match with .Contains, but simply check whether the property value matches to True or False.

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~~Changed~~ Changes only need to be made to the individual EvalExpression. The "FilterExpression" that joins all individual expressions does not need to be amended, other than the regular additional EvalExpressionParameter, and updating the expression accordingly.

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REP

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