datagrid angular2, cascading dropdowns with unique values

 

Hei,

I am trying to build Cascading dropdowns using DevExtreme controls inside the DevExtreme data grid. The problems I am facing are

  • There are non-unique values shown in the dropdown list. Can you help me to show only unique values in the dropdown list inside the ordreIDNummer column?

  • The 2 dropdowns are cascading, which means that based on the dropdown in jobbnavn field, the dropdown in the ordreIDnummer has to be displayed. I am not sure how to achieve these. Below is the code for the grid I am using and pictures of the data that is being displayed at my end currently.


    • {{cellData.value}}

    {{cellData.value | lowercase}} alignment="right">

    在这里输入图像描述在这里输入图像描述

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