feat(ListView): 添加分组排序回调

[densen2014]

Is there an existing issue for this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe the problem.

使用分组后没有采用排序属性

Describe the solution you'd like

需要添加一个自定义排序

Additional context

No response

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[densen2014]

例子

ConsoleApp1.zip

版本2

ConsoleApp1版本2.zip

执行结果

生产数据

我程序用到的分组

期望的效果

var groups2 = OrdersMenu.GroupBy(a => new {a.PrintGroup, a.CategoryName }).OrderBy(a => a.Key.PrintGroup).ThenBy(a => a.Key.CategoryName);

var groups2Name= groups2.Select(a => a.Key.CategoryName).ToList();

[ArgoZhang]

定义分组类

record ProductGroupKey
{
    public int PrintGroup { get; set; }

    public string Category { get; set; } = "";

    public override string ToString()
    {
        return $"{PrintGroup}-{Category}";
    }
}

定义分组回调参数

GroupName="p => new ProductGroupKey() { PrintGroup = p.PrintGroup, Category = p.Category }"

<ListView TItem="Product" GroupName="p => new ProductGroupKey() { PrintGroup = p.PrintGroup, Category = p.Category }" GroupOrderCallback="GroupOrderCallback" GroupItemOrderCallback="GroupItemOrderCallback" OnQueryAsync="@OnQueryAsync">
    <BodyTemplate>
        <Card>
            <BodyTemplate>
                <div class="lv-demo-desc">@context.Category</div>
            </BodyTemplate>
        </Card>
    </BodyTemplate>
</ListView>

定义分组排序回调

private static IOrderedEnumerable<IGrouping<object?, Product>>? GroupOrderCallback(IEnumerable<IGrouping<object?, Product>> group)
{
    return group.OrderBy(i => ((ProductGroupKey)i.Key!).PrintGroup).ThenBy(i => ((ProductGroupKey)i.Key!).Category);
}

完整工程见附件
BootstrapBlazorApp1.zip

[densen2014]

给老张头点赞

[densen2014]

tips: 最终采用重写排序方法搞定, 因为区域排序不同导致中英文排序跟预想不符

    public int CompareTo(CategoryGroup other)
    {
        return string.Compare((PrintGroup??0).ToString() + CategoryName, (other.PrintGroup??0).ToString() + other.CategoryName, StringComparison.Ordinal);
    }

    public static IOrderedEnumerable<IGrouping<object?, ResOrdersMenu>>? GroupOrderCallback(IEnumerable<IGrouping<object?, ResOrdersMenu>> group)
    {
        return group.OrderBy(i => (CategoryGroup)i.Key!); 
    }