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User Interaction in ASP.NET Core Linear Gauge control

20 Oct 2021 / 3 minutes to read

Tooltip

Linear Gauge displays the details about a pointer value through e-lineargauge-tooltip, when the mouse hovers over the pointer. To enable the tooltip, set Enable property as true.

tagHelper
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@using Syncfusion.EJ2.LinearGauge

<ejs-lineargauge id="gauge">
    <e-lineargauge-tooltip Enable="true"></e-lineargauge-tooltip>
    <e-lineargauge-axes>
        <e-lineargauge-axis>
            <e-lineargauge-pointers>
                <e-lineargauge-pointer Value="80"></e-lineargauge-pointer>
            </e-lineargauge-pointers>
        </e-lineargauge-axis>
    </e-lineargauge-axes>
</ejs-lineargauge>

<<<<<<< HEAD Linear Gauge with tooltip for pointer value ======= Linear Gauge with tooltip

25c536e4a77a22da0ab7e1d0d5fc4cc724190ae6

Tooltip format

Tooltip in the Linear Gauge control can be formatted using the Format property in e-lineargauge-tooltip. It is used to render the tooltip in certain format or to add a user-defined unit in the tooltip. By default, the tooltip shows the pointer value only. In addition to that, more information can be added in the tooltip. For example, the format {value}km shows pointer value with kilometer unit in the tooltip.

tagHelper
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using Syncfusion.EJ2.LinearGauge

<ejs-lineargauge id="gauge">
    <e-lineargauge-tooltip Enable="true" Format="{value}km"></e-lineargauge-tooltip>
    <e-lineargauge-axes>
        <e-lineargauge-axis>
            <e-lineargauge-pointers>
                <e-lineargauge-pointer Value="80"></e-lineargauge-pointer>
            </e-lineargauge-pointers>
        </e-lineargauge-axis>
    </e-lineargauge-axes>
</ejs-lineargauge>

<<<<<<< HEAD Linear Gauge with tooltip format for pointer value ======= Linear Gauge with tooltip format

25c536e4a77a22da0ab7e1d0d5fc4cc724190ae6

Tooltip Template

The HTML element can be rendered in the tooltip of the Linear Gauge using the Template property in e-lineargauge-tooltip. The ${value} can be used as placeholders in the HTML element to display the pointer values of the corresponding axis.

tagHelper
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@using Syncfusion.EJ2.LinearGauge

<ejs-lineargauge id="gauge">
    <e-lineargauge-tooltip Enable="true" Template="<div>Pointer: 80 </div>"></e-lineargauge-tooltip>
    <e-lineargauge-axes>
        <e-lineargauge-axis>
            <e-lineargauge-pointers>
                <e-lineargauge-pointer Value="80"></e-lineargauge-pointer>
            </e-lineargauge-pointers>
        </e-lineargauge-axis>
    </e-lineargauge-axes>
</ejs-lineargauge>

<<<<<<< HEAD Linear Gauge with tooltip template for pointer value ======= Linear Gauge with tooltip template

25c536e4a77a22da0ab7e1d0d5fc4cc724190ae6

Customize the appearance of the tooltip

The tooltip can be customized using the following properties in e-lineargauge-tooltip.

  • Fill - To fill the color for tooltip.
  • EnableAnimtion - To enable or disable the tooltip animation.
  • Border - To set the border color and width of the tooltip.
  • TextStyle - To customize the style of the text in tooltip.
  • ShowAtMousePosition - To show the tooltip at the mouse position.
tagHelper
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@using Syncfusion.EJ2.LinearGauge

<ejs-lineargauge id="gauge">
    <e-lineargauge-tooltip Enable="true" Fill="#e5bcbc">
        <e-tooltipsettings-border Width="2" Color="#d80000"></e-tooltipsettings-border>
    </e-lineargauge-tooltip>
    <e-lineargauge-axes>
        <e-lineargauge-axis>
            <e-lineargauge-pointers>
                <e-lineargauge-pointer Value="80"></e-lineargauge-pointer>
            </e-lineargauge-pointers>
        </e-lineargauge-axis>
    </e-lineargauge-axes>
</ejs-lineargauge>

Linear Gauge with tooltip customization

Positioning the tooltip

The tooltip is positioned at the End of the pointer. To change the position of the tooltip at the start, or center of the pointer, set the Position property to Start or Center.

tagHelper
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@using Syncfusion.EJ2.LinearGauge

<ejs-lineargauge id="gauge">
    <e-lineargauge-tooltip Enable="true" Position="Center">
    </e-lineargauge-tooltip>
    <e-lineargauge-axes>
        <e-lineargauge-axis>
            <e-lineargauge-pointers>
                <e-lineargauge-pointer Value="50" Type="Bar" Color="blue"></e-lineargauge-pointer>
            </e-lineargauge-pointers>
        </e-lineargauge-axis>
    </e-lineargauge-axes>
</ejs-lineargauge>

Linear Gauge with tooltip position

Pointer Drag

To drag either marker or bar pointer to the desired axis value, set the EnableDrag property as true in e-lineargauge-pointer.

tagHelper
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@using Syncfusion.EJ2.LinearGauge

<ejs-lineargauge id="gauge">
    <e-lineargauge-axes>
        <e-lineargauge-axis>
            <e-lineargauge-pointers>
                <e-lineargauge-pointer EnableDrag="true" Value="80"></e-lineargauge-pointer>
            </e-lineargauge-pointers>
        </e-lineargauge-axis>
    </e-lineargauge-axes>
</ejs-lineargauge>

Linear Gauge with pointer drag