Blazor Tree Grid の縮小可能な列グループの概要
Blazor Tree Grid の Ignite UI for Blazor の縮小可能な列グループ機能を使用すると、IgbTreeGrid
内の複数レベルのネストされた列と列グループをグループ化し、これらのグループを縮小したり展開したりしてデータの視覚化とナビゲーションを向上させるオプションを提供することで、それらを整理および管理できます。
Blazor Tree Grid の縮小可能な列グループの例
using System;
using System.Collections.Generic;
public class EmployeesFlatDetailsItem
{
public string Address { get; set; }
public double Age { get; set; }
public string City { get; set; }
public string Country { get; set; }
public string Fax { get; set; }
public string HireDate { get; set; }
public double ID { get; set; }
public string Name { get; set; }
public double ParentID { get; set; }
public string Phone { get; set; }
public double PostalCode { get; set; }
public string Title { get; set; }
public string LastName { get; set; }
public string FullAddress { get; set; }
}
public class EmployeesFlatDetails
: List<EmployeesFlatDetailsItem>
{
public EmployeesFlatDetails()
{
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"Obere Str. 57",
Age = 55,
City = @"Berlin",
Country = @"Germany",
Fax = @"030-0076545",
HireDate = @"2008-03-20",
ID = 1,
Name = @"Johnathan Winchester",
ParentID = -1,
Phone = @"030-0074321",
PostalCode = 12209,
Title = @"Development Manager",
LastName = @"Winchester",
FullAddress = @"Obere Str. 57, Berlin, Germany"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"Avda. de la Constitución 2222",
Age = 42,
City = @"México D.F.",
Country = @"Mexico",
Fax = @"(51) 555-3745",
HireDate = @"2014-01-22",
ID = 4,
Name = @"Ana Sanders",
ParentID = -1,
Phone = @"(5) 555-4729",
PostalCode = 5021,
Title = @"CEO",
LastName = @"Sanders",
FullAddress = @"Avda. de la Constitución 2222, México D.F., Mexico"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"Mataderos 2312",
Age = 49,
City = @"México D.F.",
Country = @"Mexico",
Fax = @"(5) 555-3995",
HireDate = @"2014-01-22",
ID = 18,
Name = @"Victoria Lincoln",
ParentID = -1,
Phone = @"(5) 555-3932",
PostalCode = 5023,
Title = @"Accounting Manager",
LastName = @"Lincoln",
FullAddress = @"Mataderos 2312, México D.F., Mexico"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"120 Hanover Sq.",
Age = 61,
City = @"London",
Country = @"UK",
Fax = @"(171) 555-6750",
HireDate = @"2010-01-01",
ID = 10,
Name = @"Yang Wang",
ParentID = -1,
Phone = @"(171) 555-7788",
PostalCode = 39000,
Title = @"Localization Manager",
LastName = @"Wang",
FullAddress = @"120 Hanover Sq., London, UK"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"Berguvsvägen 8",
Age = 43,
City = @"Luleå",
Country = @"Sweden",
Fax = @"0921-12 34 67",
HireDate = @"2011-06-03",
ID = 3,
Name = @"Michael Burke",
ParentID = 1,
Phone = @"0921-12 34 65",
PostalCode = 29000,
Title = @"Senior Software Developer",
LastName = @"Burke",
FullAddress = @"Berguvsvägen 8, Luleå, Sweden"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"Forsterstr. 57",
Age = 29,
City = @"Mannheim",
Country = @"Germany",
Fax = @"0621-08924",
HireDate = @"2009-06-19",
ID = 2,
Name = @"Thomas Anderson",
ParentID = 1,
Phone = @"0621-08460",
PostalCode = 68306,
Title = @"Senior Software Developer",
LastName = @"Anderson",
FullAddress = @"Forsterstr. 57, Mannheim, Germany"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"24, place Kléber",
Age = 31,
City = @"Strasbourg",
Country = @"France",
Fax = @"88.60.15.32",
HireDate = @"2014-08-18",
ID = 11,
Name = @"Monica Reyes",
ParentID = 1,
Phone = @"88.60.15.31",
PostalCode = 67000,
Title = @"Software Development Team Lead",
LastName = @"Reyes",
FullAddress = @"24, place Kléber, Strasbourg, France"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"C/ Araquil, 67",
Age = 35,
City = @"Madrid",
Country = @"Spain",
Fax = @"(911) 555 91 99",
HireDate = @"2015-09-17",
ID = 6,
Name = @"Roland Mendel",
ParentID = 11,
Phone = @"(91) 555 22 82",
PostalCode = 28023,
Title = @"Senior Software Developer",
LastName = @"Mendel",
FullAddress = @"C/ Araquil, 67, Madrid, Spain"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"12, rue des Bouchers",
Age = 44,
City = @"Marseille",
Country = @"France",
Fax = @"91.24.45.41",
HireDate = @"2009-10-11",
ID = 12,
Name = @"Sven Cooper",
ParentID = 11,
Phone = @"91.24.45.40",
PostalCode = 13008,
Title = @"Senior Software Developer",
LastName = @"Cooper",
FullAddress = @"12, rue des Bouchers, Marseille, France"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"23 Tsawassen Blvd.",
Age = 44,
City = @"Tsawassen",
Country = @"Canada",
Fax = @"(604) 555-3745",
HireDate = @"2014-04-04",
ID = 14,
Name = @"Laurence Johnson",
ParentID = 4,
Phone = @"(604) 555-4729",
PostalCode = 19000,
Title = @"Director",
LastName = @"Johnson",
FullAddress = @"23 Tsawassen Blvd., Tsawassen, Canada"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"Fauntleroy Circus",
Age = 25,
City = @"London",
Country = @"UK",
Fax = @"(125) 555-3798",
HireDate = @"2017-11-9",
ID = 5,
Name = @"Elizabeth Richards",
ParentID = 4,
Phone = @"(171) 555-1212",
PostalCode = 30000,
Title = @"Vice President",
LastName = @"Richards",
FullAddress = @"Fauntleroy Circus, London, UK"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"Cerrito 333",
Age = 39,
City = @"Buenos Aires",
Country = @"Argentina",
Fax = @"(121) 135-4892",
HireDate = @"2010-03-22",
ID = 13,
Name = @"Trevor Ashworth",
ParentID = 5,
Phone = @"(1) 135-5555",
PostalCode = 1010,
Title = @"Director",
LastName = @"Ashworth",
FullAddress = @"Cerrito 333, Buenos Aires, Argentina"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"Sierras de Granada 9993",
Age = 44,
City = @"México D.F.",
Country = @"Mexico",
Fax = @"(153) 555-7293",
HireDate = @"2014-04-04",
ID = 17,
Name = @"Antonio Moreno",
ParentID = 18,
Phone = @"(5) 555-3392",
PostalCode = 5022,
Title = @"Senior Accountant",
LastName = @"Moreno",
FullAddress = @"Sierras de Granada 9993, México D.F., Mexico"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"Hauptstr. 29",
Age = 50,
City = @"Sao Paulo",
Country = @"Brazil",
Fax = @"(531) 555-6691",
HireDate = @"2007-11-18",
ID = 7,
Name = @"Pedro Rodriguez",
ParentID = 10,
Phone = @"0452-076545",
PostalCode = 3012,
Title = @"Senior Localization Developer",
LastName = @"Rodriguez",
FullAddress = @"Hauptstr. 29, Sao Paulo, Brazil"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"Av. dos Lusíadas, 23",
Age = 27,
City = @"Bern",
Country = @"Switzerland",
Fax = @"(271) 335-357",
HireDate = @"2016-02-19",
ID = 8,
Name = @"Casey Harper",
ParentID = 10,
Phone = @"(11) 555-7647",
PostalCode = 40000,
Title = @"Senior Localization",
LastName = @"Harper",
FullAddress = @"Av. dos Lusíadas, 23, Bern, Switzerland"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"Berkeley Gardens 12",
Age = 25,
City = @"London",
Country = @"UK",
Fax = @"(171) 555-9199",
HireDate = @"2017-11-09",
ID = 15,
Name = @"Patricia Simpson",
ParentID = 7,
Phone = @"(171) 555-2282",
PostalCode = 26000,
Title = @"Localization Intern",
LastName = @"Simpson",
FullAddress = @"Berkeley Gardens 12, London, UK"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"Walserweg 21",
Age = 39,
City = @"Aachen",
Country = @"Germany",
Fax = @"0241-059428",
HireDate = @"2010-03-22",
ID = 9,
Name = @"Francisco Chang",
ParentID = 7,
Phone = @"0241-039123",
PostalCode = 52066,
Title = @"Localization Intern",
LastName = @"Chang",
FullAddress = @"Walserweg 21, Aachen, Germany"
});
this.Add(new EmployeesFlatDetailsItem()
{
Address = @"35 King George",
Age = 25,
City = @"London",
Country = @"UK",
Fax = @"(171) 555-3373",
HireDate = @"2018-03-18",
ID = 16,
Name = @"Peter Lewis",
ParentID = 7,
Phone = @"(171) 555-0297",
PostalCode = 48000,
Title = @"Localization Intern",
LastName = @"Lewis",
FullAddress = @"35 King George, London, UK"
});
}
}
csusing System;
using System.Net.Http;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Text;
using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using IgniteUI.Blazor.Controls; // for registering Ignite UI modules
namespace Infragistics.Samples
{
public class Program
{
public static async Task Main(string[] args)
{
var builder = WebAssemblyHostBuilder.CreateDefault(args);
builder.RootComponents.Add<App>("app");
builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) });
// registering Ignite UI modules
builder.Services.AddIgniteUIBlazor(
typeof(IgbInputModule),
typeof(IgbTreeGridModule)
);
await builder.Build().RunAsync();
}
}
}
cs
@using IgniteUI.Blazor.Controls
<style>
/*
CSS styles are loaded from the shared CSS file located at:
https://static.infragistics.com/xplatform/css/samples/
*/
#treeGrid {
--ig-size: var(--ig-size-small);
}
</style>
<div class="container vertical ig-typography">
<div class="container vertical fill">
<IgbTreeGrid
AutoGenerate="false"
Name="treeGrid"
@ref="treeGrid"
Id="treeGrid"
Data="EmployeesFlatDetails"
PrimaryKey="ID"
ForeignKey="ParentID"
Moving="true"
RowSelection="GridSelectionMode.None">
<IgbColumnGroup
Header="General Information"
Collapsible="true"
Expanded="false"
Pinned="false">
<IgbColumn
Field="Name"
Header="Full Name"
DataType="GridColumnDataType.String"
Sortable="true"
Resizable="true"
Width="200"
VisibleWhenCollapsed="false">
</IgbColumn>
<IgbColumn
Field="LastName"
Header="Last Name"
DataType="GridColumnDataType.String"
Sortable="true"
Resizable="true"
Width="200"
VisibleWhenCollapsed="true">
</IgbColumn>
<IgbColumn
Field="Title"
Width="250"
DataType="GridColumnDataType.String"
Sortable="true"
Resizable="true">
</IgbColumn>
<IgbColumn
Field="ID"
DataType="GridColumnDataType.Number"
Resizable="true"
Filterable="false"
VisibleWhenCollapsed="false">
</IgbColumn>
<IgbColumn
Field="HireDate"
DataType="GridColumnDataType.Date"
Sortable="true"
Resizable="true"
VisibleWhenCollapsed="false">
</IgbColumn>
<IgbColumn
Field="Age"
DataType="GridColumnDataType.Number"
Sortable="true"
Resizable="true"
VisibleWhenCollapsed="false">
</IgbColumn>
</IgbColumnGroup>
<IgbColumnGroup
Header="Address Information">
<IgbColumnGroup
Header="Location"
Collapsible="true">
<IgbColumn
Field="FullAddress"
Width="300"
DataType="GridColumnDataType.String"
Sortable="true"
Resizable="true"
VisibleWhenCollapsed="true">
</IgbColumn>
<IgbColumn
Field="Country"
DataType="GridColumnDataType.String"
Sortable="true"
Resizable="true"
VisibleWhenCollapsed="false">
</IgbColumn>
<IgbColumn
Field="City"
DataType="GridColumnDataType.String"
Sortable="true"
Resizable="true"
VisibleWhenCollapsed="false">
</IgbColumn>
<IgbColumn
Field="Address"
DataType="GridColumnDataType.String"
Sortable="true"
Resizable="true"
VisibleWhenCollapsed="false">
</IgbColumn>
</IgbColumnGroup>
<IgbColumnGroup
Header="Contact Information">
<IgbColumn
Field="Phone"
DataType="GridColumnDataType.String"
Sortable="true"
Resizable="true">
</IgbColumn>
<IgbColumn
Field="Fax"
DataType="GridColumnDataType.String"
Sortable="true"
Resizable="true">
</IgbColumn>
<IgbColumn
Field="PostalCode"
DataType="GridColumnDataType.String"
Sortable="true"
Resizable="true">
</IgbColumn>
</IgbColumnGroup>
</IgbColumnGroup>
</IgbTreeGrid>
</div>
</div>
@code {
protected override async Task OnAfterRenderAsync(bool firstRender)
{
var treeGrid = this.treeGrid;
}
private IgbTreeGrid treeGrid;
private EmployeesFlatDetails _employeesFlatDetails = null;
public EmployeesFlatDetails EmployeesFlatDetails
{
get
{
if (_employeesFlatDetails == null)
{
_employeesFlatDetails = new EmployeesFlatDetails();
}
return _employeesFlatDetails;
}
}
}
razor/*
CSS styles are loaded from the shared CSS file located at:
https://static.infragistics.com/xplatform/css/samples/
*/
#treeGrid {
--ig-size: var(--ig-size-small);
}
css
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設定
IgbTreeGrid
および縮小可能な複数列ヘッダーを使用するには、まず以下のコマンドを入力して、Ignite UI for Blazor をインストールする必要があります。
> dotnet add package IgniteUI.Blazor --version 24.2.85
cmd
Ignite UI for Blazor については、はじめに トピックををご覧ください。
そのため、複数列ヘッダーのトピックを簡単に確認することを強くお勧めします。グリッドで列グループを設定する方法の詳細情報を参照してください。
使用方法
縮小可能な列グループは複数列ヘッダー機能の一部で、列グループをより小さいデータ セットに縮小/展開する方法を提供します。列グループが折りたたまれると、列のサブセットがエンドユーザーに表示され、グループの他の子列が非表示になります。縮小/展開された各列は、グリッド データソースにバインドすることも、非バインドにして計算することもできます。
列グループを縮小可能なに定義するには、IgbColumnGroup
の Collapsible
プロパティを true に設定する必要があります。
VisibleWhenCollapsed
プロパティを少なくとも 2 つの子列に定義する必要があることに注意してください。グループが縮小されたときに少なくとも 1 列が表示され (VisibleWhenCollapsed
の設定が true)、グループが展開されたときは少なくとも 1 列が非表示になります (VisibleWhenCollapsed
の設定が false
)。**それ以外は、縮小機能は無効になります。**子列の一部に VisibleWhenCollapsed
が指定されていない場合、この列は、親の状態が展開または縮小されているかに関係なく常に表示されます。
それでは、以下のマークアップを見てみましょう。
<IgbColumnGroup Header="Customer Information" Collapsible="true">
<!--The column below will be visible when its parent is collapsed-->
<IgbColumn Field="CustomerName" Header="Full name" VisibleWhenCollapsed="true"></IgbColumn>
<!--The three columns below will be visible when its parent is expanded-->
<IgbColumn Field="CustomerID" Header="Customer ID" VisibleWhenCollapsed="false"></IgbColumn>
<IgbColumn Field="FirstName" Header="First Name" VisibleWhenCollapsed="false"></IgbColumn>
<IgbColumn Field="LastName" Header="Last Name" VisibleWhenCollapsed="false"></IgbColumn>
<IgbColumnGroup Header="Customer Address">
<IgbColumn Field="Country" Header="Country" Sortable="true"></IgbColumn>
<IgbColumn Field="City" Header="City" Sortable="true"></IgbColumn>
</IgbColumnGroup>
</IgbColumnGroup>
razor
すべての子列に 3 つの状態があります。
- 親の展開状態に関係なく、常に表示できます。
- 親が縮小されているときに表示できます。
- 親が縮小されているときに非表示にできます。
縮小可能として指定された列グループの初期状態は Expanded
が true に設定されていますが、false に設定することでこの動作を簡単に変更できます。
注 最初にグループを縮小するオプションは、非表示の列よりも優先されることに注意してください。 hidden プロパティを使用して列を非表示にすることを宣言し、同じ列を表示するグループが定義されている場合、列が表示されます。
API リファレンス
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コミュニティに参加して新しいアイデアをご提案ください。