RemoteFileSystemProviderBuilder.BeforeSubmit(String) Method

Specifies a function that customizes a form submit request before it is sent to the server. Mirrors the client-side beforeSubmit option.

Namespace: DevExtreme.AspNet.Mvc.Builders

Assembly: DevExtreme.AspNet.Core.dll

Declaration

public RemoteFileSystemProviderBuilder BeforeSubmit(
    string jsFunc
)

Parameters

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

Returns

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

Remarks

Use this method to specify a JavaScript handler for the client-side beforeSubmit 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().FileManager()
    .FileSystemProvider(provider => provider.Remote()
        .BeforeSubmit("myFileManager_onBeforeSubmit")
)

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

Refer to Handle Events and Define Callbacks for more information.

Run Demo: File Manager - Overview Demo