The example contains the source code of the most requested custom items you can use in your Web Dasard application. Use the custom items from this example as they are, or modify them according to your needs. In this Web Dasard application, you can add custom items from the Custom Items group in the Toolbox:
This example uses a client-server architecture. The server (backend) project communicates with the client (frontend) application that includes all the necessary styles, scripts and HTML templates. Note that the script version on the client must match the version of libraries on the server.
- The asp-net-core-server folder contains the backend project built with .NET 8.0.
- The dasard-react-app folder contains the client application built with React.
- SimpleTableItem.js
- PolarChartItem.js
- ParameterItem.js
- OnlineMapItem.js
- WebPageItem.js
- GanttItem.js
- HierarchicalTreeViewItem.js
- FunnelD3Item.js
- App.tsx
In the asp-net-core-server folder, run the following command:
dotnet run
The server starts at http://localhost:5000 and the client gets data from http://localhost:5000/api/dasard. To debug the server, run the asp-net-core-server application in Visual Studio and change the client's endpoint property according to the listening port: https://localhost:44374/api/dasard.
See the following section for information on how to install NuGet packages from the DevExpress NuGet feed: Install DevExpress Controls Using NuGet Packages.
This server allows CORS requests from all origins with any scheme (http or https). This default configuration is insecure: any website can make cross-origin requests to the app. We recommend that you specify the client application's URL to prohibit other clients from accessing sensitive information stored on the server. Learn more: Cross-Origin Resource Sharing (CORS)
In the dasard-react-app folder, run the following commands:
npm install
npm start
Open http://localhost:3000/ in your browser to see the result.
The dasard displays product sales for the selected category. Use the Country parameter to filter data by country. Select a category on the Polar Chart to show sales by products from this category in the table.
This dasard contains the following custom items:
View Script: SimpleTableItem.js
A custom Simple Table item renders data from the measure / dimensions as an HTML table. You can use the Simple Table as a detail item along with the Master-Filtering feature. This custom item supports the following settings that you can configure in the Web Dasard UI:
- Show Headers - Specifies whether to show the field headers in the table. The default value is
Auto. - Text Color - Allows you to change the text color. The default value is
Dark.
View Script: FunnelD3Item.js
A custom Funnel D3 Chart item renders a funnel chart using the D3Funnel JS library. This custom item supports the following settings that you can configure in the Web Dasard UI:
- Fill Type - Specifies the funnel chart's solid or gradient fill type.
- Curved - Specifies whether the funnel is curved.
- Dynamic Height - Specifies whether the height of blocks are proportional to their weight.
- Pinch Count - Specifies how many blocks to pinch at the bottom to create a funnel "neck".
View Script: PolarChartItem.js
A custom Polar Chart item that allows you to use the dxPolarChart DevExtreme widget in your dasards. This item supports the following settings that you can configure in the Web Dasard UI:
- Display Labels - Specifies whether to show point labels.
View Script: ParameterItem.js
A custom Parameter item renders dasard parameter dialog content inside the dasard layout, and allows you to edit and submit parameter values. This item supports the following settings that you can configure in the Web Dasard UI:
- Show Headers - Specifies whether to show headers in the parameters table.
- Show Parameter Name - Specifies whether to show the first column with parameter names.
- Automatic Updates - Specifies whether a parameter item is updated automatically. When enabled, this option hides the 'Submit' and 'Reset' buttons.
The dasard displays information from Wikipedia for the selected country.
This dasard contains the following custom items:
View Script: OnlineMapItem.js
A custom Online Map item allows you to place callouts on Google or Bing maps using geographical coordinates. The dxMap is used as an underlying UI component. This custom item supports the following settings that you can configure in the Web Dasard UI:
- Provider - Specifies whether to show Azure or Bing maps.
- Type - Specifies the map type. You can choose between
RoadMap,SatelliteorHybrid. - Display Mode - Specifies whether to show markers or routes.
To ensure maps render correctly, specify your Azure/Bing Maps credentials in the OnlineMapItem.js file.
View Script: WebPageItem.js
A custom Web Page item displays a single web page or a set of pages. You can use the Web Page as a detail item along with the Master-Filtering feature. The content is rendered inside the Inline Frame element (<iframe>). This custom item supports the following setting that you can configure in the Web Dasard UI:
- URL - Specifies a web page URL. You can set a single page as well as a set of pages (e.g., 'https://en.wikipedia.org/wiki/{0}'). If you add a dimension and specify a placeholder, the data source field returns strings that will be inserted in the position of the {0} placeholder. Thus, the Web Page item joins the specified URL with the current dimension value and displays the page located by this address.
The dasard displays tasks. Select the task to display detailed information in the Grid.
This dasard contains the following custom item:
View Script: GanttItem.js
A custom Gannt item displays the task flow and dependencies between tasks. This item uses dxGantt as an underlying UI component.
The dasard displays departmental data. Use the custom Tree View item to filter detailed information in the Grid.
This dasard contains the following custom item:
View Script: HierarchicalTreeViewItem.js
A custom Tree View item can display hierarchical data. This item uses dxTreeView as an underlying UI component.
These extensions are distributed under the MIT license (free and open-source), but can only be used with a commercial DevExpress Dasard software product. You can review the license terms or download a free trial version of the Dasard suite at DevExpress.com.
- Dasard for Angular - Custom Item Gallery
- Dasard for ASP.NET Core - Custom Item Gallery
- Dasard for ASP.NET Core - Custom Item Tutorials
- Dasard for React - Custom Item Tutorials
- Dasard for WinForms - Custom Item Extensions
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