combobox 相关问题

我如何使用 contains 而不是 StartsWith 来实现我的 Combobox TextSearch 我如何使用 contains 而不是 StartsWith 来实现我的组合框文本搜索 <rf:ComboBox Grid.Row="1" Grid.Column="5" Width="200" ItemsSource="{Binding Source={StaticResource AccountProvider}}" DisplayMemberPath="Description" SelectedValuePath="IndRekId" IsEmptyItemVisible="True" SelectedValue="{Binding Id, UpdateSourceTrigger=PropertyChanged}" IsTextSearchEnabled="True" TextSearch.TextPath="Description" IsEditable="True"/> 搜索功能可以工作，但我需要匹配子字符串这里我有一个MVVM框架的例子。我的xaml文件： <ComboBox Name="cmbContains" IsEditable="True" IsTextSearchEnabled="false" ItemsSource="{Binding pData}" DisplayMemberPath="wTitle" Text="{Binding SearchText ,Mode=TwoWay}" > <ComboBox.Triggers> <EventTrigger RoutedEvent="TextBoxBase.TextChanged"> <BeginStoryboard> <Storyboard> <BooleanAnimationUsingKeyFrames Storyboard.TargetProperty="IsDropDownOpen"> <DiscreteBooleanKeyFrame Value="True" KeyTime="0:0:0"/> </BooleanAnimationUsingKeyFrames> </Storyboard> </BeginStoryboard> </EventTrigger> </ComboBox.Triggers> </ComboBox> 我的cs文件： //ItemsSource - pData //There is a string attribute - wTitle included in the fooClass (DisplayMemberPath) private ObservableCollection<fooClass> __pData; public ObservableCollection<fooClass> pData { get { return __pData; } set { Set(() => pData, ref __pData, value); RaisePropertyChanged("pData"); } } private string _SearchText; public string SearchText { get { return this._SearchText; } set { this._SearchText = value; RaisePropertyChanged("SearchText"); //Update your ItemsSource here with Linq pData = new ObservableCollection<fooClass>{pData.ToList().Where(.....)}; } } 您可以看到可编辑的组合框绑定到字符串（SearchText）一旦发生 TextChanged 事件，就会显示下拉菜单，并且双向绑定会更新值。当进入 set{} 时，cs 文件中的 ItemsSource 发生了变化；语法。 https://gist.github.com/tonywump/82e66abaf71f715c4bd45a82fce14d80 这个示例看起来像“TextSearch” 在 XAML 文件中，您应该只向组合框“TextContainSearch.Text”添加一个属性： <ComboBox ItemsSource="{Binding Model.formListIntDeviceNumbers}" SelectedItem="{Binding Path=Model.selectedDeviceNumber, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" DisplayMemberPath="DeviceNumber" IsEditable="True" c:TextContainSearch.Text="DeviceNumber"> 我们应该在 XAML 文件的标头中添加 using ： xmlns:c="clr-namespace:Adaptive.Controls.Extension" *.cs 文件中的 C# 代码： using System; using System.Windows; using System.Windows.Controls; namespace Adaptive.Controls.Extension { public sealed class TextContainSearch : DependencyObject { public static void SetText(DependencyObject element, string text) { var controlSearch = element as Control; if (controlSearch != null) controlSearch.KeyUp += (sender, e) => { if (sender is ComboBox){ var control = sender as ComboBox; control.IsDropDownOpen = true; var oldText = control.Text; foreach(var itemFromSource in control.ItemsSource){ if (itemFromSource != null) { Object simpleType = itemFromSource.GetType().GetProperty(text).GetValue(itemFromSource, null); String propertOfList = simpleType as string; if (!string.IsNullOrEmpty(propertOfList) && propertOfList.Contains(control.Text)) { control.SelectedItem = itemFromSource; control.Items.MoveCurrentTo(itemFromSource); break; } } } control.Text = oldText; TextBox txt = control.Template.FindName("PART_EditableTextBox", control) as TextBox; if (txt != null) { txt.Select(txt.Text.Length, 0); } } }; } } } 试试这个： <ComboBox Padding="3,5" MinWidth="150" SelectedItem="{Binding NewBoxRequest}" ItemsSource="{Binding Requests}" DisplayMemberPath="SN" IsEditable="True" StaysOpenOnEdit="True" Text="{Binding SnFilter,UpdateSourceTrigger=PropertyChanged}"> </ComboBox> 查看型号： private string snFilter; public string SnFilter { get { return snFilter; } set { snFilter = value; RaisePropertyChanged(); RaisePropertyChanged(nameof(Requests)); } } private List<Request> requests; public List<Request> Requests { get => string.IsNullOrEmpty(SnFilter) || requests.Any(r => r.SN == SnFilter) ? requests : requests.Where(r => r.SN.Contains(SnFilter)).ToList(); set { requests = value; RaisePropertyChanged(); } } 无法用 string.Contains() 替换 string.StartsWith()。您必须编写自定义组合框。这篇文章可能会帮助您： http://www.codeproject.com/Tips/631196/ComboBox-with-Suggest-Ability-based-on-Substring-S 我无法让“Set”语法在我的 C# 系统中工作，所以这里是对上面 Wu 的答案的一个小起飞（这是在自定义控件中）： <ComboBox IsEditable="True" IsTextSearchEnabled="false" ItemsSource="{Binding pData, RelativeSource = {RelativeSource TemplatedParent}}" DisplayMemberPath="description" Text="{Binding SearchText , RelativeSource = {RelativeSource TemplatedParent}, Mode=TwoWay}" > <ComboBox.Triggers> <EventTrigger RoutedEvent="TextBoxBase.TextChanged"> <BeginStoryboard> <Storyboard> <BooleanAnimationUsingKeyFrames Storyboard.TargetProperty="IsDropDownOpen"> <DiscreteBooleanKeyFrame Value="True" KeyTime="0:0:0"/> </BooleanAnimationUsingKeyFrames> </Storyboard> </BeginStoryboard> </EventTrigger> </ComboBox.Triggers> </ComboBox> 在自定义控件中： private async void _Loaded(object sender, RoutedEventArgs e) { var n = await InitializeLabTests; allTests = new ObservableCollection<CommonProcedure>(n); pData = new ObservableCollection<CommonProcedure>(n); } //ItemsSource - pData //There is a string attribute - wTitle included in the fooClass (DisplayMemberPath) private ObservableCollection<CommonProcedure> __pData; public ObservableCollection<CommonProcedure> pData { get { return __pData; } set { __pData = value; RaisePropertyChanged(); } } private string _SearchText; public string SearchText { get { return _SearchText; } set { _SearchText = value; RaisePropertyChanged(); //Update your ItemsSource here with Linq pData = new ObservableCollection<CommonProcedure> ( allTests.Where(q => q.description.Contains(SearchText)) ); } } 唯一显着的区别在于 SearchText 设置器。 ComboBox KeyUp 事件上的动态事件怎么样： <ComboBox DisplayMemberPath="Label" Height="37" Padding="5" SelectedValue="{Binding Client, UpdateSourceTrigger=PropertyChanged}" ItemsSource="{Binding ClientList, UpdateSourceTrigger=PropertyChanged }" IsEditable="True" TextSearch.TextPath="Label" KeyUp="ComboBox_KeyUp" /> 活动： private void ComboBox_KeyUp(object sender, KeyEventArgs e) { var control = sender as ComboBox; if (control == null) { return; } if (control.Tag == null) { control.Tag = control.ItemsSource as List<ComboBoxItemViewModel>; } var filter = control.Text.ToLower(); if (filter.Length == 0) { // If no text, show all items control.ItemsSource = control.Tag as List<ComboBoxItemViewModel>; } else { var dataSource = control.Tag as List<ComboBoxItemViewModel>; if (dataSource == null) return; // Filter items based on the text entered control.ItemsSource = dataSource.Where(item => item.Label.ToLower().Contains(filter)).ToList(); } } //Just replace the List<ComboBoxItemViewModel> with your ViewModel

wpf search combobox

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python tkinter 奇怪的 { 在列表中

我在选择部分中遇到了这个 {}。即使在选择框中我也遇到了麻烦。仅当列表中存在空格时才会发生这种情况。将 tkinter 导入为 tk 从 tkinter 导入 ttk 所有用户 = [(7, '

python list tkinter combobox

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我有一个组合框，我可以在其中输入文本，它会根据包含该文本的项目列表建议结果。一切似乎都工作正常，除了当我输入第一个字母时，

c# winforms user-interface combobox

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C# WPF Combobox 有两列，如何获取所选项目？

我有一个组合框：我有一个组合框： <ComboBox x:Name="cmbOrganization_Config_AddSalGrp" FontSize="20" Margin="5 0 5 5" SelectedItem="{Binding OrgID}"> <ComboBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal"> <TextBlock Text="{Binding Organization_Name}" Margin="0 0 20 0" Visibility="Visible"/> <TextBlock Text="{Binding OrgID}" Visibility="Visible"/> </StackPanel> </DataTemplate> </ComboBox.ItemTemplate> </ComboBox> 我有这个隐藏代码： try { // Let the SqlCommand object know which stored procedure to execute SqlCommand cmd = new SqlCommand("tuc_salary_grouping_add", con); //Specify that it is a stored procedure and not a normal proc cmd.CommandType = System.Data.CommandType.StoredProcedure; // cmd.Parameters.AddWithValue("@SalaryGroupingName", this.SalaryGroupingConfig_add.Text); cmd.Parameters.AddWithValue("@Organization_ID", this.cmbOrganization_Config_AddSalGrp.SelectedItem); cmd.Parameters.AddWithValue("@Organization_ID", this.cmbOrganization_Config_AddSalGrp.Text); cmd.Parameters.AddWithValue("@Organization_ID", (this.cmbOrganization_Config_AddSalGrp.SelectedItem as ComboBoxItem).Content.ToString()); cmd.Parameters.AddWithValue("@Notes", string.Empty); // Open the connection and execute the stored procedure con.Open(); int rowsAffected = cmd.ExecuteNonQuery(); Debug.WriteLine($"SQL> New record insert was successfully - [{rowsAffected}]"); return true; } 用户选择该项目后，我需要从组合框中获取“OrgID”。我尝试了3种不同的方法，但都不起作用。我的代码不是 MVVM 形式。 OrgID 是一个整数。我感谢你的帮助。您可以使用 SelectionChanged 事件来检索所选项目。就像下面的例子： public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } private void Window_Loaded(object sender, RoutedEventArgs e) { var Items = new List<ItemsOrga> { new ItemsOrga("Id1", "Orga1"), new ItemsOrga("Id2", "Orga2"), new ItemsOrga("Id3", "Orga3") }; cmbOrganization_Config_AddSalGrp.ItemsSource = Items; } private void cmbOrganization_Config_AddSalGrp_SelectionChanged(object sender, SelectionChangedEventArgs e) { if (e.AddedItems.Count > 0) { var SelectedItem = e.AddedItems[0] as ItemsOrga; Debug.WriteLine(SelectedItem.OrgID); } } } public class ItemsOrga { public string Organization_Name { get; set; } public string OrgID { get; set; } public ItemsOrga(string OrgID, string Organization_Name) { this.OrgID = OrgID; this.Organization_Name = Organization_Name; } }

c# wpf combobox desktop-application selecteditem

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EXT 4.2 使用 XTemplate 对结果进行 ComboBox 分组

我正在尝试对从商店获得的结果进行分组以显示在 ComboBox 内。我有一个如下所示的组合框：我需要它看起来像这样：这意味着按类别分组...

javascript extjs combobox grouping extjs4.2

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如何使用 pywinauto 选择没有标题的组合框

在我的Windows应用程序中，有三个没有标题但有不同列表项的组合框。如何根据 ComboBox 包含的项目选择正确的 ComboBox。如果我只选择 Control_Type 我会得到

python combobox pywinauto

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使用两个不同表中两列的所有数据填充普通单列组合框

这是我在这个网站或其他地方都没有找到的情况：我的 VBA 用户表单上有一个组合框“数字”。我想用选项卡第 1 列中的数据填充它...