PolarChartBuilder.OnZoomStart(String) Method

A function that is executed when zooming or panning begins. Mirrors the client-side onZoomStart option.

Namespace: DevExtreme.AspNet.Mvc.Builders

Assembly: DevExtreme.AspNet.Core.dll

Declaration

public PolarChartBuilder OnZoomStart(
    string jsFunc
)

Parameters

Name	Type	Description
jsFunc	String	An inline or external JavaScript function.

Returns

Type	Description
PolarChartBuilder	A reference to this instance after the method is called.

Remarks

Use this method to specify a JavaScript handler for the client-side zoomStart event. This handler can be an inline function or an external function’s reference. Function arguments are described in the client API reference.

Razor C#

@(Html.DevExtreme().PolarChart()
    .OnZoomStart("myPolarChart_onZoomStart")
)

<script>
    function myPolarChart_onZoomStart(e) {
        // Handler code
    }
</script>

Refer to Handle Events and Define Callbacks for more information.