TextBoxBuilder.OnFocusIn(String) Method

A function that is executed when the UI component gets focus. Mirrors the client-side onFocusIn option.

Namespace: DevExtreme.AspNet.Mvc.Builders

Assembly: DevExtreme.AspNet.Core.dll

Declaration

public TextBoxBuilder OnFocusIn(
    string jsFunc
)

Parameters

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

Returns

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

Remarks

Use this method to specify a JavaScript handler for the client-side focusIn 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().TextBox()
    .OnFocusIn("myTextBox_onFocusIn")
)

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

Refer to Handle Events and Define Callbacks for more information.