如何禁用组合框中的项目之一，即wpf中的字符串集合? [英] How to disable one of items in a combo box which is collection of strings in wpf?

问题描述

如何在组合框中禁用项目之一，该组合框中是wpf中的字符串集合.

How to disable one of items in a combo box which is collection of strings in wpf

推荐答案

您好，
将项目列表添加为组合框项目

Hi,
Add the list of items as Comboboxitem

<Window x:Class="Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300" Name="Window1">
    <Grid>
        <ComboBox Height="23" Margin="56,55,102,0" Name="ComboBox1" VerticalAlignment="Top" >
            <ComboBoxItem Content="Item1"/>
            <ComboBoxItem Content="Item2" IsEnabled="False" />
        </ComboBox>
        <ComboBox Margin="76,121,82,118" Name="ComboBox2">
            <ComboBox.ItemTemplate>
                <DataTemplate>
                    <ComboBoxItem  Content="{Binding Name}" IsEnabled="{Binding IsToBeEnabled}"/>
                </DataTemplate> 
            </ComboBox.ItemTemplate>    
        </ComboBox>
    </Grid>
</Window>

隐藏代码:

Code Behind:

Class Window1 

    Private Sub Window1_Loaded(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles MyBase.Loaded
        Dim lst As New List(Of MyData)
        Dim obj As New MyData
        obj.IsToBeEnabled = True
        obj.Name = "Item1"
        lst.Add(obj)
        obj = New MyData
        obj.Name = "Item2"
        obj.IsToBeEnabled = False
        lst.Add(obj)
        obj = New MyData
        obj.Name = "Item3"
        obj.IsToBeEnabled = True
        lst.Add(obj)
        ComboBox2.ItemsSource = lst
    End Sub
End Class

Class MyData

    Private blnIsToBeEnabled As Boolean
    Public Property IsToBeEnabled() As Boolean
        Get
            Return blnIsToBeEnabled
        End Get
        Set(ByVal value As Boolean)
            blnIsToBeEnabled = value
        End Set
    End Property


    Private strName As String
    Public Property Name() As String
        Get
            Return strName
        End Get
        Set(ByVal value As String)
            strName = value
        End Set
    End Property

End Class

在这里，我有两个combobox.其中一个直接在xaml本身中添加了comboboxitems.如果要迭代后面代码中的字符串列表，请创建一个comboboxitem并将其添加到comboboxitem

在第二个combobox中我已经覆盖了模板，并基于绑定对象的属性，我正在设置comboboxitem的IsEnabled

希望对您有所帮助

Here i have two combobox.One has directly comboboxitems added in xaml itself.If you want you can iterate the list of string in code behind,create a comboboxitem and add it to the comboboxitem

In the second combobox i have overridden the template and based on a property of the object binded i am setting the comboboxitem's IsEnabled

Hope it helps

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