Class Dropdown<TValue>

Namespace

BootstrapBlazor.Components

Assembly

BootstrapBlazor.dll

Dropdown 下拉框组件

public class Dropdown<TValue> : PopoverSelectBase<TValue>, IComponent, IHandleAfterRender, IHandleEvent, IAsyncDisposable, IValidateComponent

Type Parameters

TValue

Inheritance

object

ComponentBase

BootstrapComponentBase

IdComponentBase

BootstrapModuleComponentBase

DisplayBase<TValue>

ValidateBase<TValue>

PopoverDropdownBase<TValue>

PopoverSelectBase<TValue>

Dropdown<TValue>

Implements

IComponent

IHandleAfterRender

IHandleEvent

IAsyncDisposable

IValidateComponent

Derived

FilterButton<TValue>

Inherited Members

PopoverSelectBase<TValue>.IsPopover

PopoverSelectBase<TValue>.Offset

PopoverSelectBase<TValue>.ToggleString

PopoverSelectBase<TValue>.OffsetString

PopoverDropdownBase<TValue>.Placement

PopoverDropdownBase<TValue>.CustomClass

PopoverDropdownBase<TValue>.ShowShadow

PopoverDropdownBase<TValue>.PlacementString

PopoverDropdownBase<TValue>.CustomClassString

ValidateBase<TValue>.TryParseValueFromString(string, out TValue, out string)

ValidateBase<TValue>.FormatParsingErrorMessage()

ValidateBase<TValue>.IsRequired()

ValidateBase<TValue>.SetParametersAsync(ParameterView)

ValidateBase<TValue>.OnInitialized()

ValidateBase<TValue>.OnAfterRenderAsync(bool)

ValidateBase<TValue>.IsComplexValue(object)

ValidateBase<TValue>.ValidatePropertyAsync(object, ValidationContext, List<ValidationResult>)

ValidateBase<TValue>.ToggleMessage(IEnumerable<ValidationResult>, bool)

ValidateBase<TValue>.ShowValidResult()

ValidateBase<TValue>.RemoveValidResult(string)

ValidateBase<TValue>.OnValidate(bool?)

ValidateBase<TValue>.DisposeAsync(bool)

ValidateBase<TValue>.SetDisable(bool)

ValidateBase<TValue>.SetValue(TValue)

ValidateBase<TValue>.SetLabel(string)

ValidateBase<TValue>.PreviousParsingAttemptFailed

ValidateBase<TValue>.PreviousErrorMessage

ValidateBase<TValue>.EditContext

ValidateBase<TValue>.ErrorMessage

ValidateBase<TValue>.ValidCss

ValidateBase<TValue>.IsValid

ValidateBase<TValue>.Disabled

ValidateBase<TValue>.Required

ValidateBase<TValue>.CurrentValue

ValidateBase<TValue>.CurrentValueAsString

ValidateBase<TValue>.OnValueChanged

ValidateBase<TValue>.ParsingErrorMessage

ValidateBase<TValue>.SkipValidate

ValidateBase<TValue>.IsDisabled

ValidateBase<TValue>.CascadedEditContext

ValidateBase<TValue>.FieldClass

ValidateBase<TValue>.CssClass

ValidateBase<TValue>.Rules

ValidateBase<TValue>.ValidateRules

ValidateBase<TValue>.IsNeedValidate

ValidateBase<TValue>.IsAsyncValidate

DisplayBase<TValue>.FormatValueAsString(TValue)

DisplayBase<TValue>.IsShowLabel

DisplayBase<TValue>.FieldIdentifier

DisplayBase<TValue>.NullableUnderlyingType

DisplayBase<TValue>.ValueType

DisplayBase<TValue>.Value

DisplayBase<TValue>.ValueChanged

DisplayBase<TValue>.ValueExpression

DisplayBase<TValue>.ShowLabel

DisplayBase<TValue>.ShowLabelTooltip

DisplayBase<TValue>.DisplayText

DisplayBase<TValue>.ValidateForm

DisplayBase<TValue>.EditorForm

DisplayBase<TValue>.InputGroup

DisplayBase<TValue>.Filter

BootstrapModuleComponentBase.OnLoadJSModule()

BootstrapModuleComponentBase.InvokeInitAsync()

BootstrapModuleComponentBase.InvokeVoidAsync(string, params object[])

BootstrapModuleComponentBase.InvokeVoidAsync(string, TimeSpan, params object[])

BootstrapModuleComponentBase.InvokeVoidAsync(string, CancellationToken, params object[])

BootstrapModuleComponentBase.InvokeAsync<TValue>(string, params object[])

BootstrapModuleComponentBase.InvokeAsync<TValue>(string, TimeSpan, params object[])

BootstrapModuleComponentBase.InvokeAsync<TValue>(string, CancellationToken, params object[])

BootstrapModuleComponentBase.DisposeAsync()

BootstrapModuleComponentBase.Module

BootstrapModuleComponentBase.ModulePath

BootstrapModuleComponentBase.AutoInvokeInit

BootstrapModuleComponentBase.AutoInvokeDispose

BootstrapModuleComponentBase.Interop

IdComponentBase.RetrieveId()

IdComponentBase.Id

IdComponentBase.ComponentIdGenerator

BootstrapComponentBase.AdditionalAttributes

BootstrapComponentBase.ErrorLogger

BootstrapComponentBase.JSRuntime

BootstrapComponentBase.IsNotRender

ComponentBase.OnInitializedAsync()

ComponentBase.OnParametersSetAsync()

ComponentBase.StateHasChanged()

ComponentBase.ShouldRender()

ComponentBase.OnAfterRender(bool)

ComponentBase.InvokeAsync(Action)

ComponentBase.InvokeAsync(Func<Task>)

ComponentBase.DispatchExceptionAsync(Exception)

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Extension Methods

ExpandableNodeExtensions.SetChildrenCheck<TNode, TItem>(TNode, CheckboxState, TreeNodeCache<TNode, TItem>?)

ExpandableNodeExtensions.SetParentCheck<TNode, TItem>(TNode, CheckboxState, TreeNodeCache<TNode, TItem>?)

ExpandableNodeExtensions.SetParentExpand<TNode, TItem>(TNode, bool)

Constructors

Dropdown()

public Dropdown()

Properties

ButtonTemplate

获得/设置 按钮内容模板

[Parameter]
public RenderFragment<SelectedItem?>? ButtonTemplate { get; set; }

Property Value

RenderFragment<SelectedItem>

Color

获得/设置 颜色 默认 Color.None 无设置

[Parameter]
public Color Color { get; set; }

Property Value

Color

Direction

获得/设置 下拉选项方向 默认 Dropdown 向下

[Parameter]
public Direction Direction { get; set; }

Property Value

Direction

FixedButtonText

获得/设置 固定按钮显示文字 默认 null

[Parameter]
public string? FixedButtonText { get; set; }

Property Value

string

IsFixedButtonText

获得/设置 是否固定按钮文字 更改下拉框选项时按钮文字保持不变 默认 false 不固定

[Parameter]
public bool IsFixedButtonText { get; set; }

Property Value

bool

ItemTemplate

获得/设置 选项模板

[Parameter]
public RenderFragment<SelectedItem>? ItemTemplate { get; set; }

Property Value

RenderFragment<SelectedItem>

Items

获得/设置 绑定数据集

[Parameter]
public IEnumerable<SelectedItem>? Items { get; set; }

Property Value

IEnumerable<SelectedItem>

ItemsTemplate

获得/设置 Items 模板 默认 null

[Parameter]
public RenderFragment? ItemsTemplate { get; set; }

Property Value

RenderFragment

MenuAlignment

获得/设置 获取菜单对齐方式 默认 none 未设置

[Parameter]
public Alignment MenuAlignment { get; set; }

Property Value

Alignment

OnSelectedItemChanged

SelectedItemChanged 回调方法

[Parameter]
public Func<SelectedItem, Task>? OnSelectedItemChanged { get; set; }

Property Value

Func<SelectedItem, Task>

ShowFixedButtonTextInDropdown

获得/设置 下拉菜单中是否显示固定文字 默认 false 不显示

[Parameter]
public bool ShowFixedButtonTextInDropdown { get; set; }

Property Value

bool

ShowSplit

获得/设置 是否开启分裂式 默认 false

[Parameter]
public bool ShowSplit { get; set; }

Property Value

bool

Size

获得/设置 组件尺寸 默认 none 未设置

[Parameter]
public Size Size { get; set; }

Property Value

Size

Methods

ActiveItem(SelectedItem)

获得/设置 设置当前项是否 Active 方法

protected string? ActiveItem(SelectedItem item)

Parameters

item SelectedItem

Returns

string

BuildRenderTree(RenderTreeBuilder)

protected override void BuildRenderTree(RenderTreeBuilder __builder)

Parameters

__builder RenderTreeBuilder

OnItemClick(SelectedItem)

下拉框选项点击时调用此方法

protected Task OnItemClick(SelectedItem item)

Parameters

item SelectedItem

Returns

Task

OnParametersSet()

OnParametersSet 方法

protected override void OnParametersSet()