FilterBuilderCustomOperationBuilder.CalculateFilterExpression(RazorBlock) 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(
    RazorBlock jsFunc
)

Parameters

Name	Type	Description
jsFunc	RazorBlock	The Razor @<text> block that contains JavaScript function code.

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. Pass the Razor @<text> block that contains the function code to the method. Function arguments are described in the client API reference.

Razor C#

@(Html.DevExtreme().FilterBuilder()
    .CustomOperations(customOperations => {
        customOperations.Add().CalculateFilterExpression(@<text>
            function(arg) {
                // Handler code
            }
        </text>);
    })
)

Refer to Handle Events and Define Callbacks for more information.