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Use OnInit to call back the delegate method, and after assigning the initialization data, the drawing operation can be performed

Demo
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Use the Tension parameter of the ChartDataset instance to adjust the curvature of the polyline, the default is 0.4f

Demo
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Use to set the Data parameter of the ChartDataset instance with null, and the line chart is connected with a dotted line

Demo
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@page "/charts/line"
@inject IStringLocalizer<Line> Localizer

<DemoBlock Title="@Localizer["P1"]" Introduction="@Localizer["P2"]" Name="LineOnInit">
    <Chart @ref="LineChart" OnInitAsync="() => OnInit(0.4f, false)" OnAfterInitAsync="@OnAfterInit" OnAfterUpdateAsync="@OnAfterUpdate" />
    <div class="text-center mt-2 chart">
        <div class="btn-group">
            <button class="btn btn-primary" @onclick="e => Utility.RandomData(LineChart)"><i class="fa-solid fa-chart-line"></i><span>@Localizer["P3"]</span></button>
            <button class="btn btn-primary" @onclick="e => Utility.AddDataSet(LineChart, ref LineDatasetCount)"><i class="fa-solid fa-circle-plus"></i><span>@Localizer["P4"]</span></button>
            <button class="btn btn-primary" @onclick="e => Utility.RemoveDataSet(LineChart, ref LineDatasetCount)"><i class="fa-solid fa-circle-minus"></i><span>@Localizer["P5"]</span></button>
            <button class="btn btn-primary" @onclick="e => Utility.AddData(LineChart, ref LineDataCount)"><i class="fa-solid fa-plus"></i><span>@Localizer["P6"]</span></button>
            <button class="btn btn-primary" @onclick="e => Utility.RemoveData(LineChart, ref LineDataCount)"><i class="fa-solid fa-minus"></i><span>@Localizer["P7"]</span></button>
        </div>
    </div>
    <BlockLogger @ref="Logger" class="mt-3" />
</DemoBlock>

<DemoBlock Title="@Localizer["P8"]" Introduction="@Localizer["P9"]" Name="LineTension">
    <Chart OnInitAsync="() => OnInit(0f, false)" />
</DemoBlock>

<DemoBlock Title="@Localizer["P10"]" Introduction="@Localizer["P11"]" Name="LineNullable">
    <Chart OnInitAsync="() => OnInit(0f, true)" />
</DemoBlock>
// Copyright (c) Argo Zhang (argo@163.com). All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
// Website: https://www.blazor.zone or https://argozhang.github.io/

namespace BootstrapBlazor.Shared.Samples.Charts;

/// <summary>
/// 
/// </summary>
public partial class Line
{
    private Random Randomer { get; } = new Random();
    private int LineDatasetCount = 2;
    private int LineDataCount = 7;

    [NotNull]
    private Chart? LineChart { get; set; }

    [NotNull]
    private BlockLogger? Logger { get; set; }

    /// <summary>
    /// 
    /// </summary>
    /// <param name="firstRender"></param>
    protected override void OnAfterRender(bool firstRender)
    {
        base.OnAfterRender(firstRender);

        if (firstRender)
        {
            Logger.Log("Line loading data ...");
        }
    }

    private Task OnAfterInit()
    {
        Logger.Log("Line initialization is complete");
        return Task.CompletedTask;
    }

    private Task OnAfterUpdate(ChartAction action)
    {
        Logger.Log($"Line Figure update data operation completed -- {action}");
        return Task.CompletedTask;
    }

    private Task<ChartDataSource> OnInit(float tension, bool hasNull)
    {
        var ds = new ChartDataSource();
        ds.Options.Title = "Line Chart";
        ds.Options.X.Title = "days";
        ds.Options.Y.Title = "Numerical value";
        ds.Labels = Enumerable.Range(1, LineDataCount).Select(i => i.ToString());
        for (var index = 0; index < LineDatasetCount; index++)
        {
            ds.Data.Add(new ChartDataset()
            {
                Tension = tension,
                Label = $"Set {index}",
                Data = Enumerable.Range(1, LineDataCount).Select((i, index) => (index == 2 && hasNull) ? null! : (object)Randomer.Next(20, 37))
            });
        }
        return Task.FromResult(ds);
    }
}

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Bootstrap Blazor Component library updated to 7.0.8-beta05

Bootstrap Blazor at present has more than 120 components. This component is based on Bootstrap Blazor An enterprise-level component library that provides several types of common components such as layout, navigation, form, data, notification, icon, voice, etc. Each component has been carefully designed with modularity, responsiveness and excellent performance. Starting from more practical scenarios, meeting the needs of various scenarios, greatly reducing the time cost of developers, greatly shortening the development cycle, greatly improving development efficiency, and providing a set of General Rights Management System Example project。Bootstrap Blazor Products are maintained by a professional full-time technical team, with efficient response speed, diversified solutions, long-term support, and enterprise-level support. At present, it has been used in many well-known state-owned enterprises, and the project is running stably with a maximum of 1200 people online. On the right is the QR code of the Chinese Blazor QQ community with the largest number of people in China, welcome to scan and join the group.

component updated to 6.6.0 Change log [portal] If the component brings you convenience, please help to light up the project Star github gitee

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