Simple

The Select control uses the HTML Select element to create a data-driven selection control that can be populated with all the supported data sources. You can use the OptionSelected event to interact with the selected value.

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Razor code

SelectModel customerSelect = new SelectModel(DataSourceType.SQLite, "northwind", "Customers")
{
    Caption = "Customer",
    EmptyOption = "Please select a customer",
    Columns = new List()
    {
        new SelectColumn("CustomerID"),
        new SelectColumn("CompanyName")
    }
};
customerSelect.ClientEvents[SelectClientEvent.OptionSelected] = "showSelectedCustomer";
@(await new DbNetSuiteCore.SelectControl(HttpContext).Render(customerSelect))
    <div id="selectedCustomer"></div>