You can change the datasource/query for the checkbox list in excel filter using ActionBegin event of Grid. The following code example shows how to change the datasource in excel Filtering of Grid.
2. You can change the dataSource/query in the actionBegin event. In the below we have modified the excel filter query by adding a take query. Here checkbox list datasource show depends upon take query value.
Figure 1: Excel filter with query modified.
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