Skip to main content
BuyLog In
ASP.NET Core Controls
Search in…
Docs > API Reference > DevExtreme-Based Controls > DevExtreme.AspNet.Mvc.Builders.DataSources > DataLibraryApiBuilder<TSelf> > Methods > OnBeforeSend
All docs
V25.1
    • ASP.NET Core Controls
    Prerequisites and Installation
    Supported Browsers
    Demos and Sample Apps
    DevExtreme-Based Controls
    Reporting
    Query Builder
    Rich Text Editor
    Spreadsheet
    Web Dashboard
    AI-powered Extensions
    Security Considerations
    Troubleshooting
    Redistribution and Deployment
    API Reference
    DevExtreme-Based Controls
    DevExtreme.AspNet.Mvc
    DevExtreme.AspNet.Mvc.Builders
    DevExtreme.AspNet.Mvc.Builders.Chat
    DevExtreme.AspNet.Mvc.Builders.DataSources
    ArrayDataSourceBuilder
    ControllerDataSourceOptionsBuilder
    DataLibraryApiBuilder<TSelf>
    Members
    Constructors
    Methods
    DeleteMethod(String)
    InsertMethod(String)
    Key(String[])
    LoadMethod(String)
    LoadParams(Object)
    OnBeforeSend
    OnBeforeSend(RazorBlock)
    OnBeforeSend(String)
    UpdateMethod(String)
    DataSourceLangParamsBuilder
    DataSourceOptionsBuilder
    DataSourceSortBuilder
    ODataSourceBuilder
    RemoteControllerDataSourceOptionsBuilder
    StaticJsonDataSourceBuilder
    StoreDataSourceBuilder
    XmlaDataSourceBuilder
    DevExtreme.AspNet.Mvc.Builders.HtmlEditor
    DevExtreme.AspNet.Mvc.Builders.Pagination
    DevExtreme.AspNet.Mvc.Factories
    DevExtreme.AspNet.Mvc.FileManagement
    Office-Inspired Controls
    Client API Reference
    Migration from WebForms & MVC5
    Download CHM

    DataLibraryApiBuilder<TSelf>.OnBeforeSend Method

    Name Parameters Description
    OnBeforeSend(RazorBlock) jsFunc Specifies a function used to customize a web request before it is sent.
    OnBeforeSend(String) jsFunc Specifies a function used to customize a web request before it is sent.