Web Forms :: Hide Filter Control Dynamically?

Dec 22, 2010

I am using a filter control which contains two CheckBoxList controls (Country CheckBoxList and Region CheckBoxList) each residing in an UpdatePanel.

The functionality of this is...

Country Checkboxlist displays countries ( connected to database). Lets say two countries are there 1. Egypt 2. Russia

If user selects only one country, then I need to display Region CheckBoxList populated with regions.

If user selects both or none, then I should hide the Region CheckBoxList control.

I am using OnSelectedIndexChanged event.

The below is the code for OnSelectedIndexChanged event:

protected void Country_OnCheckedItemChange(object sender, EventArgs e)
private void PopulateRegion()


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