Bar Charts in Blazor Charts Component

13 Sep 202424 minutes to read

Bar

Bar Chart is the most commonly used chart type to compare different categories of data, such as Frequency, Count, Total, or Average displayed in horizontal bars. It is ideal for showing variations in the value of an item over time. To render a bar series in your chart, define the series Type as Bar in your chart configuration. This indicates that the data should be represented as a bar chart, which makes it easy to compare values across categories.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" XName="X" YName="Y" Type="ChartSeriesType.Bar">
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

@code{
    public class ChartData
    {
        public string X { get; set;}
        public double Y {get; set;}
    }
	
    public List<ChartData> SalesDetails = new List<ChartData>
	{
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= 32 },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= 55 },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

NOTE

Refer to our Blazor Bar Charts feature tour page to know about its other groundbreaking feature representations. Explore our Blazor Bar Chart Example to compare values across categories by using horizontal bars.

Binding data with series

You can bind data to the chart using the DataSource property within the series configuration. The DataSource value can be set using either SfDataManager property values or a list of business objects. More information on data binding can be found here. To display the data correctly, map the fields from the data to the chart series’ XName and YName properties.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" XName="X" YName="Y" Type="ChartSeriesType.Bar">
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

@code{
    public class ChartData
    {
        public string X { get; set;}
        public double Y {get; set;}
    }
	
    public List<ChartData> SalesDetails = new List<ChartData>
	{
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= 32 },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= 55 },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

Series customization

The following properties can be used to customize the Bar series.

Fill

The Fill property determines the color applied to the series.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" Fill="blue" XName="X" YName="Y" Type="ChartSeriesType.Bar">
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

@code{
    public class ChartData
    {
        public string X { get; set;}
        public double Y {get; set;}
    }
	
    public List<ChartData> SalesDetails = new List<ChartData>
	{
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= 32 },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= 55 },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

The Fill property can be used to apply a gradient color to the bar series. By configuring this property with gradient values, you can create a visually appealing effect in which the color transitions smoothly from one shade to another.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" Fill="url(#grad1)" XName="X" YName="Y" Type="ChartSeriesType.Bar">
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

<svg style="height: 0">
   <defs>
       <linearGradient id="grad1" x1="0%" y1="0%" x2="0%" y2="100%">
           <stop offset="20%" style="stop-color:orange;stop-opacity:1" />
           <stop offset="100%" style="stop-color:black;stop-opacity:1" />
       </linearGradient>
   </defs>
</svg>

@code{
    public class ChartData
    {
        public string X { get; set;}
        public double Y {get; set;}
    }
	
    public List<ChartData> SalesDetails = new List<ChartData>
	{
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= 32 },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= 55 },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

Opacity

The Opacity property specifies the transparency level of the Fill. Adjusting this property allows you to control how opaque or transparent the fill color of the series appears.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" Opacity="0.5" XName="X" YName="Y" Type="ChartSeriesType.Bar">
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

@code{
    public class ChartData
    {
        public string X { get; set;}
        public double Y {get; set;}
    }
	
    public List<ChartData> SalesDetails = new List<ChartData>
	{
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= 32 },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= 55 },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

DashArray

The DashArray property determines the pattern of dashes and gaps in the series.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" DashArray="5,5" XName="X" YName="Y" Type="Syncfusion.Blazor.Charts.ChartSeriesType.Bar">
            <ChartSeriesBorder Width="2" Color="red"></ChartSeriesBorder>
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

@code {
    public class ChartData
    {
        public string X { get; set; }
        public double Y { get; set; }
    }

    public List<ChartData> SalesDetails = new List<ChartData>
    {
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= 32 },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= 55 },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

Series Border

The ChartSeriesBorder property to customize the Width and Color of the series border.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" DashArray="5,5" XName="X" YName="Y" Type="Syncfusion.Blazor.Charts.ChartSeriesType.Bar">
            <ChartSeriesBorder Width="2" Color="red"></ChartSeriesBorder>
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

@code {
    public class ChartData
    {
        public string X { get; set; }
        public double Y { get; set; }
    }

    public List<ChartData> SalesDetails = new List<ChartData>
    {
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= 32 },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= 55 },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

Bar space and width

The ColumnSpacing and ColumnWidth properties are used to customize the space between bars. The default value of ColumnSpacing is 0, and the default value of ColumnWidth is 0.7. Both properties range from 0 to 1.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category" />

    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" XName="X" YName="Y" Type="Syncfusion.Blazor.Charts.ChartSeriesType.Bar" ColumnSpacing="0.2" ColumnWidth="0.2">
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

@code {
    public class ChartData
    {
        public string X { get; set; }
        public double Y { get; set; }
    }

    public List<ChartData> SalesDetails = new List<ChartData>
    {
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= 32 },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= 55 },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

Grouped bar

You can use the GroupName property to group the data points in the bar type charts. Data points with same group name are grouped together.

@using Syncfusion.Blazor.Charts

<SfChart>
        <ChartPrimaryXAxis ValueType="@Syncfusion.Blazor.Charts.ValueType.Category">
        </ChartPrimaryXAxis>
        <ChartSeriesCollection>
            <ChartSeries DataSource="@ChartPoints" XName="Year" YName="USA_Total" GroupName="USA" ColumnWidth="0.7" ColumnSpacing="0.1" Type="ChartSeriesType.Bar">
            </ChartSeries>
            <ChartSeries DataSource="@ChartPoints" XName="Year" YName="USA_Gold" GroupName="USA" ColumnWidth="0.5" ColumnSpacing="0.1" Type="ChartSeriesType.Bar">
             </ChartSeries>
            <ChartSeries DataSource="@ChartPoints" XName="Year" YName="UK_Total" GroupName="UK" ColumnWidth="0.7" ColumnSpacing="0.1" Type="ChartSeriesType.Bar">
            </ChartSeries>
            <ChartSeries DataSource="@ChartPoints" XName="Year" YName="UK_Gold" GroupName="UK" ColumnWidth="0.5" ColumnSpacing="0.1" Type="ChartSeriesType.Bar">
            </ChartSeries>
        </ChartSeriesCollection>
    </SfChart>

@code{
    public class ColumnData
    {
        public string Year { get; set; }
        public double USA_Total { get; set; }
        public double USA_Gold { get; set; }
        public double UK_Total { get; set; }
        public double UK_Gold { get; set; }
        public double China_Total { get; set; }
        public double China_Gold { get; set; }
    }
    public List<ColumnData> ChartPoints { get; set; } = new List<ColumnData>
    {
        new ColumnData { Year = "2012", USA_Total = 104, USA_Gold = 46, UK_Total = 65, UK_Gold = 29, China_Total = 91, China_Gold = 38},
        new ColumnData { Year = "2016", USA_Total = 121, USA_Gold = 46, UK_Total = 67, UK_Gold = 27, China_Total = 70, China_Gold = 26},
        new ColumnData { Year = "2020", USA_Total = 113, USA_Gold = 39, UK_Total = 65, UK_Gold = 22, China_Total = 88, China_Gold = 38},
    };
}

Empty points

Data points with null, double.NaN or undefined values are considered empty. Empty data points are ignored and not plotted on the chart.

Mode

Use the Mode property to define how empty or missing data points are handled in the series. The default mode for empty points is Gap.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" XName="X" YName="Y" Type="ChartSeriesType.Bar">
            <ChartEmptyPointSettings Mode="EmptyPointMode.Zero"></ChartEmptyPointSettings>
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

@code{
    public class ChartData
    {
        public string X { get; set;}
        public double Y {get; set;}
    }
	
    public List<ChartData> SalesDetails = new List<ChartData>
	{
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= double.NaN },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= double.NaN },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

Fill

Use the Fill property to customize the fill color of empty points in the series.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" XName="X" YName="Y" Type="Syncfusion.Blazor.Charts.ChartSeriesType.Bar">
            <ChartEmptyPointSettings Fill="red" Mode="EmptyPointMode.Average" />
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

@code{
    public class ChartData
    {
        public string X { get; set;}
        public double Y {get; set;}
    }
	
    public List<ChartData> SalesDetails = new List<ChartData>
	{
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= double.NaN },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= double.NaN },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

Border

Use the Border property to customize the Width and Color of the border for empty points.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" XName="X" YName="Y" Type="Syncfusion.Blazor.Charts.ChartSeriesType.Bar">
            <ChartEmptyPointSettings Fill="red" Mode="EmptyPointMode.Average">
                <ChartEmptyPointBorder Color="green" Width="2"></ChartEmptyPointBorder>
            </ChartEmptyPointSettings>
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

@code {
    public class ChartData
    {
        public string X { get; set; }
        public double Y { get; set; }
    }

    public List<ChartData> SalesDetails = new List<ChartData>
    {
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= double.NaN },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= double.NaN },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

Events

Series render

The OnSeriesRender event allows you to customize series properties, such as Data, Fill, and Series, before they are rendered on the chart.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
    <ChartEvents OnSeriesRender="SeriesRender"></ChartEvents>
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" XName="X" YName="Y" Type="ChartSeriesType.Bar">
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

@code{
    public class ChartData
    {
        public string X { get; set;}
        public double Y {get; set;}
    }

    public void SeriesRender(SeriesRenderEventArgs args)
    {
        args.Fill = "#FF4081";
    }
	
    public List<ChartData> SalesDetails = new List<ChartData>
	{
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= 32 },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= 55 },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

Point render

The OnPointRender event allows you to customize each data point before it is rendered on the chart.

@using Syncfusion.Blazor.Charts

<SfChart>
    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
   <ChartEvents OnPointRender="PointRender"></ChartEvents>
    <ChartSeriesCollection>
        <ChartSeries DataSource="@SalesDetails" XName="X" YName="Y" Type="Syncfusion.Blazor.Charts.ChartSeriesType.Bar">
        </ChartSeries>
    </ChartSeriesCollection>
</SfChart>

@code{
    public class ChartData
    {
        public string X { get; set;}
        public double Y {get; set;}
    }

    public void PointRender(PointRenderEventArgs args)
    {
        args.Fill = (args.Point.Index % 2 != 0) ? "#ff6347" : "#009cb8";
    }
	
    public List<ChartData> SalesDetails = new List<ChartData>
	{
        new ChartData { X= "Jan", Y= 35 },
        new ChartData { X= "Feb", Y= 28 },
        new ChartData { X= "Mar", Y= 34 },
        new ChartData { X= "Apr", Y= 32 },
        new ChartData { X= "May", Y= 40 },
        new ChartData { X= "Jun", Y= 32 },
        new ChartData { X= "Jul", Y= 35 },
        new ChartData { X= "Aug", Y= 55 },
        new ChartData { X= "Sep", Y= 38 },
        new ChartData { X= "Oct", Y= 30 },
        new ChartData { X= "Nov", Y= 25 },
        new ChartData { X= "Dec", Y= 32 }
    };
}

NOTE

Refer to our Blazor Charts feature tour page for its groundbreaking feature representations and also explore our Blazor Chart Example to know various chart types and how to represent time-dependent data, showing trends at equal intervals.

See also

• Creating stacked waterfall chart using Blazor bar chart
• Data Label
• Tooltip