FilterBuilderCustomOperationBuilder.CalculateFilterExpression(String) Method

Specifies a function that returns a filter expression for this custom operation. Mirrors the client-side calculateFilterExpression option.

Namespace: DevExtreme.AspNet.Mvc.Builders

Assembly: DevExtreme.AspNet.Core.dll

Declaration

public FilterBuilderCustomOperationBuilder CalculateFilterExpression(
    string jsFunc
)

Parameters

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

Returns

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

Remarks

Use this method to specify a JavaScript handler for the client-side calculateFilterExpression callback. 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().FilterBuilder()
    .CustomOperations(customOperations => {
        customOperations.Add().CalculateFilterExpression("myFilterBuilderCustomOperation_calculateFilterExpression");
    })
)

<script>
    function myFilterBuilderCustomOperation_calculateFilterExpression(arg) {
        // Handler code
    }
</script>

Refer to Handle Events and Define Callbacks for more information.