FileUploaderBuilder.OnBeforeSend(String) Method

A function that allows you to customize the request before it is sent to the server. Mirrors the client-side onBeforeSend option.

Namespace: DevExtreme.AspNet.Mvc.Builders

Assembly: DevExtreme.AspNet.Core.dll

Declaration

public FileUploaderBuilder OnBeforeSend(
    string jsFunc
)

Parameters

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

Returns

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

Remarks

Use this method to specify a JavaScript handler for the client-side beforeSend 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().FileUploader()
    .OnBeforeSend("myFileUploader_onBeforeSend")
)

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

Refer to Handle Events and Define Callbacks for more information.