Question

我试过一个代码，我从文件夹中检索视频名称。当我从组合框中选择一些项目时，它不会在组合框选择中显示名称。我通过stackoverflow查看所有内容。但它都没有解决这个问题。请提出任何建议。

代码

public partial class TextToSignWindow : Window
{
    public TextToSignWindow()
    {
        InitializeComponent();
        var rootFolder = System.IO.Path.GetDirectoryName(
        System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase);
        var root = rootFolder + @"\Videos\";
        string localPath = new Uri(root).LocalPath;
        PopulateListBox(data,localPath, "*.wmv");
    }

    private void PopulateListBox(ComboBox cmb, string Folder, string FileType)
    {
        DirectoryInfo dinfo = new DirectoryInfo(Folder);
        FileInfo[] Files = dinfo.GetFiles(FileType);
        foreach (FileInfo file in Files)
        {
            var ext = Path.GetExtension(file.Name);
            var name = Path.GetFileNameWithoutExtension(file.Name);
            cmb.Items.Add(name);
        }
    }

    private void data_SelectionChanged_1(object sender, SelectionChangedEventArgs e)
    {
        data.SelectedValue =data.SelectedItem.ToString();
    }
}

WPF

<ComboBox x:Name="data" 
          IsEditable="True" 
          FontFamily="verdana" 
          IsSynchronizedWithCurrentItem="True" 
          FontSize="28" 
          Text="" 
          HorizontalAlignment="Left" 
          Height="81" 
          Margin="29,214,0,0" 
          VerticalAlignment="Top" 
          Width="326" 
          SelectionChanged="data_SelectionChanged_1" 
          SelectedItem="{Binding SelectedItem}" />

Answer 1

您需要包含DisplayMemberPath

CREATE OR REPLACE PACKAGE test_record
            AS
               TYPE jobs_stat_t IS RECORD (
                  valid                NUMBER,
                  header_id            NUMBER,
                  child_header_id      NUMBER,
                  order_number         NUMBER,
                  line_number          NUMBER,
                  parent_line_number   NUMBER,
                  wip_entity_id        NUMBER,
                  status_type          VARCHAR2 (30),
                  ordered_item         VARCHAR2 (50),
                  remarks              VARCHAR2 (100)
               );

               TYPE jobs_stat_table_t IS TABLE OF jobs_stat_t
                  INDEX BY BINARY_INTEGER;

               PROCEDURE get_jobs_stat (
                  p_jobs_stat_table   IN   jobs_stat_table_t
               );
            END test_record;

您可能还需要包含SelectedValuePath =“NameOfSelectedValueField”

例如：通常，DisplayMemberPath是您的描述字符串，而SelectedValuePath是您的Id int。

以下是我目前正在使用的代码的复制粘贴：

<ComboBox x:Name="data" IsEditable="True" FontFamily="verdana" IsSynchronizedWithCurrentItem="True"  FontSize="28" Text=""  HorizontalAlignment="Left" Height="81" Margin="29,214,0,0" VerticalAlignment="Top" Width="326" SelectionChanged="data_SelectionChanged_1" SelectedItem="{Binding SelectedItem}" DisplayMemberPath="NameOfFieldToDisplay"/>

Answer 2

我尝试了一个样本吗？

的Xaml

 <ComboBox x:Name="data" IsEditable="True" FontFamily="verdana" IsSynchronizedWithCurrentItem="True"  FontSize="28" Text=""  HorizontalAlignment="Left" Height="81" Margin="29,214,0,0" VerticalAlignment="Top" Width="326" SelectionChanged="data_SelectionChanged_1"  />

背后的代码

 private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            data.Items.Add("test");
            data.Items.Add("test1");
        }   

        private void data_SelectionChanged_1(object sender, SelectionChangedEventArgs e)
        {
            data.SelectedValue = data.SelectedItem.ToString();
        }

Answer 3

不要将你的组合框发送到功能

<style>
    #getFixed{
    width: 100%;
    height: 60px;
    background: green;
    display: none;
    z-index: 999;
}
</style>

如果你想发送，请参考ref

  private void PopulateListBox(string Folder, string FileType)
{
    DirectoryInfo dinfo = new DirectoryInfo(Folder);
    FileInfo[] Files = dinfo.GetFiles(FileType);
    foreach (FileInfo file in Files)
    {
        var ext = Path.GetExtension(file.Name);
        var name = Path.GetFileNameWithoutExtension(file.Name);
        data.Items.Add(name);
    }
}

Combobox选择了项目WPF

3 个答案: