-
Data Grids / Data Management
-
Data Grid
- Overview
-
Data Binding
-
Filtering
- Sorting
-
Editing
-
Grouping
-
Selection
- Focused Row
- Paging
-
Scrolling
-
Columns
-
Master-Detail
-
Data Summaries
-
Drag & Drop
-
Export to PDF
-
Export to Excel
- Appearance
-
Customization
- State Persistence
-
Adaptability
-
Keyboard Navigation
- Right-To-Left Support
-
Tree List
- Overview
-
Data Binding
-
Filtering
- Sorting
-
Editing
-
Selection
- Focused Row
- Paging
-
Columns
- Drag & Drop
- State Persistence
- Adaptability
-
Keyboard Navigation
-
Card View
-
Pivot Grid
- Overview
-
Data Binding
-
Field Management
-
Data Summaries
- Drill Down
- Filtering
-
Scrolling
-
Export to Excel
- Chart Integration
- Customization
- State Persistence
-
Filter Builder
-
-
Data Visualization
-
Charts
- Overview
-
Data Binding
-
Common Concepts
-
Axis
-
Aggregation
-
Tooltips
-
Selection
-
Customization
-
Zooming
-
Export
-
-
Area Charts
-
Bar Charts
- Bullet Charts
-
Doughnut Charts
-
Financial Charts
-
Funnel and Pyramid Charts
-
Line Charts
- Pareto Chart
-
Pie Charts
-
Point Charts
-
Polar and Radar Charts
-
Range Charts
- Sankey Chart
-
Sparkline Charts
-
Tree Map
-
Gauges
- Overview
-
Runtime update
-
Bar Gauge
-
Circular Gauge
-
Linear Gauge
-
Diagram
- Overview
-
Data Binding
-
Featured Shapes
-
Custom Shapes
-
Document Capabilities
-
User Interaction
- UI Customization
- Adaptability
-
-
Scheduling / Planning
-
Scheduler
- Overview
-
Data Binding
-
Views
-
Appointments
-
Timetable
- Editing
-
Grouping
- Virtual Scrolling
- Drag & Drop
-
Customization
- Adaptability
-
Gantt
- Overview
- Data Binding
-
Filtering
- Sorting
- Strip Lines
- Export to PDF
- Validation
-
Customization
-
-
Reporting
-
AI-powered Extensions
-
Interaction
-
Report Types
-
Data binding
-
Real-life Reports
-
Layout Features
-
Report Controls
-
Web-specific Features
-
-
Rich Text Editor
- Overview
- Load/Save
- Document Protection
-
Templates
- Autocorrect
-
Customization
- Simple View
-
Spreadsheet
- Overview
-
Open a Document
- Export And Printing
-
Features
-
UI Customization
-
Messaging
-
WYSIWYG Editor
-
Forms
-
Data Editors
- Overview
-
Common Concepts
-
Calendar
- Check Box
- Color Box
- Date Box
-
Date Range Box
-
Number Box
- Radio Group
-
Range Selector
- Range Slider
- Slider
- Switch
- Text Area
- Text Box
-
Drop-Downs
- Autocomplete
-
Drop Down Box
-
Select Box
-
Tag Box
-
Lookup
-
Buttons
-
File Upload / File Management
-
File Manager
- Overview
-
File System Types
-
Customization
-
File Uploader
-
-
Popup and Notifications
-
Navigation
- Overview
- Accordion
-
Context Menu
-
Menu
- Multi View
-
Drawer
-
Tab Panel
-
Tabs
-
Toolbar
-
Stepper
- Pagination
-
List
-
Tree View
- Right-to-Left Support
-
Layout
-
Tile View
- Splitter
-
Gallery
- Scroll View
-
-
Interactive Wrappers
-
Sortable
- Resizable
-
-
Progress Indicators
-
Maps
- Overview
-
Map
-
Vector Map
-
Data Binding
- Multiple Layers
-
Markers
- Legend
-
Zooming and Panning
-
Customization
-
-
Localization
Related Demos:
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Charts - Step Area with Gaps
The Step Area series uses perpendicular vertical and horizontal lines to connect data points and shades the area under these lines. If a point's value is null
, the series draws a gap.
Only null
point values result in gaps. undefined
values are ignored. Multiple 0 values may look like a gap, but if series points are visible, you can see them in this gap. If you want to remove gaps caused by null
values, enable the ignoreEmptyPoints property.
Backend API
@(Html.DevExtreme().Chart()
.ID("chart")
.CommonSeriesSettings(s => s
.ArgumentField("Year")
.Type(SeriesType.StepArea)
.Steparea(a => a.Point(p => p.Visible(true)))
)
.Series(s => {
s.Add().ValueField("Gold").Name("Gold Medals").Color("#ffd700");
s.Add().ValueField("Silver").Name("Silver Medals").Color("#c0c0c0");
})
.Title(t => t.Text("France Olympic Medals"))
.Export(e => e.Enabled(true))
.Legend(l => l
.VerticalAlignment(VerticalEdge.Bottom)
.HorizontalAlignment(HorizontalAlignment.Center)
)
.ArgumentAxis(a => a
.Label(l => l
.Format(f => f
.Type(Format.Decimal)
)
)
)
.DataSource(new object[] {
new { Year = 1904, Gold = (int?)null, Silver = (int?)null },
new { Year = 1908, Gold = 5, Silver = 5 },
new { Year = 1912, Gold = 7, Silver = 4 },
new { Year = 1916, Gold = (int?)null, Silver = (int?)null },
new { Year = 1920, Gold = 9, Silver = 19 },
new { Year = 1924, Gold = 13, Silver = 15 },
new { Year = 1928, Gold = 6, Silver = 10 },
new { Year = 1932, Gold = 10, Silver = 5 },
new { Year = 1936, Gold = 7, Silver = 6 },
new { Year = 1940, Gold = (int?)null, Silver = (int?)null },
new { Year = 1944, Gold = (int?)null, Silver = (int?)null },
new { Year = 1948, Gold = 10, Silver = 6 },
new { Year = 1952, Gold = 6, Silver = 6 },
new { Year = 1956, Gold = 4, Silver = 4 },
new { Year = 1960, Gold = (int?)null, Silver = 2 },
new { Year = 1964, Gold = 1, Silver = 8 },
new { Year = 1968, Gold = 7, Silver = 3 },
new { Year = 1972, Gold = 2, Silver = 4 },
new { Year = 1976, Gold = 2, Silver = 3 },
new { Year = 1980, Gold = 6, Silver = 5 },
new { Year = 1984, Gold = 5, Silver = 7 },
new { Year = 1988, Gold = 6, Silver = 4 },
new { Year = 1992, Gold = 8, Silver = 5 },
new { Year = 1996, Gold = 15, Silver = 7 },
new { Year = 2000, Gold = 13, Silver = 14 },
new { Year = 2004, Gold = 11, Silver = 9 },
new { Year = 2008, Gold = 7, Silver = 16 },
new { Year = 2012, Gold = 11, Silver = 11 },
new { Year = 2016, Gold = 18, Silver = 18 }
})
)
using DevExtreme.AspNet.Data;
using DevExtreme.AspNet.Mvc;
using DevExtreme.NETCore.Demos.Models;
using DevExtreme.NETCore.Demos.Models.SampleData;
using Microsoft.AspNetCore.Mvc;
using System;
using System.Collections.Generic;
using System.Linq;
namespace DevExtreme.NETCore.Demos.Controllers {
public class ChartsController : Controller {
public ActionResult NullPointSupport() {
return View();
}
}
}
#chart {
height: 440px;
width: 100%;
}