AsyncRuleBuilder.ValidationCallback(String) Method

Mirrors the client-side validationCallback option.

Namespace: DevExtreme.AspNet.Mvc.Builders

Assembly: DevExtreme.AspNet.Core.dll

Declaration

public AsyncRuleBuilder ValidationCallback(
    string jsFunc
)

Parameters

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

Returns

Type	Description
AsyncRuleBuilder	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. 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().DataGrid()
    .Columns(columns => {
        columns.Add()    
            .DataField("MyField")
            .ValidationRules(rules => {
                rules.AddAsync()
                    .ValidationCallback("myAsyncRule_validationCallback");
            });
    })
)

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

Refer to Handle Events and Define Callbacks for more information.