CustomRuleBuilder.ValidationCallback(RazorBlock) Method

Mirrors the client-side validationCallback option.

Namespace: DevExtreme.AspNet.Mvc.Builders

Assembly: DevExtreme.AspNet.Core.dll

Declaration

public CustomRuleBuilder ValidationCallback(
    RazorBlock jsFunc
)

Parameters

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

Returns

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

Remarks

Use this method to specify a JavaScript handler for the client-side validationCallback 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().DataGrid()
    .Columns(columns => {
        columns.Add()    
            .DataField("MyField")
            .ValidationRules(rules => {
                rules.AddCustom()
                    .ValidationCallback(@<text>
                        function(arg) {
                            // Handler code
                        }
                    </text>);
            });
    })
)

Refer to Handle Events and Define Callbacks for more information.