Question

我通常可以在网络上的某个地方找到解决方案，而且大多数都是在SO。我已经尝试了两天来解决这个问题，所有尝试都产生了相同的结果。希望这里有人可以提供我需要的帮助。

我没有在应用程序的任何地方添加任何语言代码，除了在组合框中，用户可以选择语言和下拉事件，当他们选择rtb定义下面的语言时。

下面的

是richtextbox的xaml定义

            <RichTextBox Name="rtbDoc" IsDocumentEnabled="true" Padding="4"
                     MinHeight="350" HorizontalAlignment="Stretch"
                     VerticalAlignment="Stretch" SpellCheck.IsEnabled="True" VerticalScrollBarVisibility="Auto"
                     HorizontalScrollBarVisibility="Auto" AcceptsTab="True" IsTabStop="False"  
                     IsVisibleChanged="rtbDoc_IsVisibleChanged" 
                     KeyUp="rtbDoc_KeyUp" PreviewMouseUp="rtbDoc_MouseUp" PreviewMouseDown="rtbDoc_PreviewMouseDown"
                     PreviewKeyDown="rtbDocPreviewKeyDown"
                     ContextMenuOpening="rtb_ContextMenuOpening" 
                     ToolTip="Edit documents" Width="941"  >

以下是应该应用语言的事件中的代码，但仅更改拼写检查程序，不仅针对所选文本而且针对整个文档。

               private void cbbLanguage_DropDownClosed(object sender, EventArgs e)
    {
        if (this.cbbLanguage.SelectedIndex < 0) { return; }

        int iLcid = (int)this.cbbLanguage.SelectedValue;
        _ci = new System.Globalization.CultureInfo(iLcid);

        // following does not seem to have any desire affect
        //System.Threading.Thread.CurrentThread.CurrentCulture = _ci;
        //System.Threading.Thread.CurrentThread.CurrentUICulture = _ci;
        //CultureInfo ci2 = CultureInfo.CreateSpecificCulture(_ci.Name);

        // both of following changes only spellchecker for document so that all English text underlined
        //InputLanguageManager.SetInputLanguage(this.rtbDoc, CultureInfo.CreateSpecificCulture(ci2.Name));
        //XmlLanguage xl = this.rtbDoc.Document.Language;

        int iIdx = this.cbbLanguage.SelectedIndex;
        DataRowView drv = this.cbbLanguage.SelectedItem as DataRowView;
        DataRow[] dr = _dtLanguages.Select("LanguageId = " + drv[0].ToString());  // number id of language selected

        XmlLanguage xl2 = XmlLanguage.GetLanguage(dr[0]["LanguageName"].ToString());

        // this works in changing the property and all words in document 
        //  become underlined indicating spellchecker changed but text remained English
        //this.rtbDoc.Language = xl2;  

        if (this.rtbDoc.Selection.Text.Length > 1)
        {
            // this works to immediately (no focus change necessary) to 
            //   change the property and the spellchecker shows the entire 
            //   doc content misspelled, but the selected text remains english
            this.rtbDoc.Selection.ApplyPropertyValue(FrameworkElement.LanguageProperty, xl2);  
        }

    }

Answer 1

在得到Shloime Rosenblum先生的帮助后，我修改了我的代码并在这里发帖给其他可能寻求相同解决方案的人。首先，无法更改选择中的现有文本。更好的解决方案是允许用户在键入时切换语言。以下代码可以顺利，立即完成。

首先构建ComoboBox的列表。我选择使用表而不是带有类的列表，因为对我来说这更直观，更简单。

private void LoadLanguages()
    {
        CultureInfo[] ciCultures = CultureInfo.GetCultures(CultureTypes.AllCultures);

        // create table
        _dtLanguages = new DataTable();
        _dtLanguages.Columns.Add("LanguageId", typeof(int));
        _dtLanguages.Columns.Add("LanguageName", typeof(string));
        _dtLanguages.Columns.Add("LanguageDisplayName", typeof(string));

        // populate table
        foreach ( CultureInfo ci in ciCultures)
        {
            DataRow dr = _dtLanguages.NewRow();
            dr["LanguageId"] = ci.LCID;
            dr["LanguageName"] = ci.Name;
            dr["LanguageDisplayName"] = ci.DisplayName + "(" + ci.NativeName + ")";
            _dtLanguages.Rows.Add(dr);
        }

        try
        {
            _dtLanguages.DefaultView.Sort = "LanguageDisplayName ASC";
            this.cbbLanguage.ItemsSource = _dtLanguages.DefaultView;
            this.cbbLanguage.DisplayMemberPath = "LanguageDisplayName";
            this.cbbLanguage.SelectedValuePath = "LanguageId";
        }
        catch (Exception ex)
        {
            int i = ex.Message.Length;
        }

        return;
    }

然后为用户选择语言添加selectionchanged事件。

        private void cbbLanguage_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        if (e.AddedItems.Count == 0) { return; }

        // set language for rtb
        DataRowView drv = e.AddedItems[0] as DataRowView;
        DataRow[] dr = _dtLanguages.Select("LanguageId = " + drv[0].ToString());  // number id of language selected
        XmlLanguage xl2 = XmlLanguage.GetLanguage(dr[0]["LanguageName"].ToString());
        this.rtbDoc.Language = xl2;

        // set keyboard to match language setting; language must exactly match 
        // a keyboard defined in Windows.Control Panel.Language.Keyboards

        int iLcid = (int)this.cbbLanguage.SelectedValue;
        CultureInfo ci = new System.Globalization.CultureInfo(iLcid);
        InputLanguageManager.Current.CurrentInputLanguage = CultureInfo.CreateSpecificCulture(ci.Name);

        // rtb applies changes when receiving focus
        this.rtbDoc.Focus();
    }

用户选择语言并开始输入新语言，直到他选择另一种语言。 rtb的xaml代码无需更改，也无需更改rtb焦点所需的事件。

Answer 2

您可以使用GotFocus中的LostFocus和rtbDoc个事件并更改InputLanguageManager。

<RichTextBox Name="rtbDoc" IsDocumentEnabled="true" Padding="4"
                 GotFocus="ChangeLanguage"
                 LostFocus="ChangeToDefault"
                 MinHeight="350" HorizontalAlignment="Stretch"
                 VerticalAlignment="Stretch" SpellCheck.IsEnabled="True" VerticalScrollBarVisibility="Auto"
                 HorizontalScrollBarVisibility="Auto" AcceptsTab="True" IsTabStop="False"  
                 IsVisibleChanged="rtbDoc_IsVisibleChanged" 
                 KeyUp="rtbDoc_KeyUp" PreviewMouseUp="rtbDoc_MouseUp" PreviewMouseDown="rtbDoc_PreviewMouseDown"
                 PreviewKeyDown="rtbDocPreviewKeyDown"
                 ContextMenuOpening="rtb_ContextMenuOpening" 
                 ToolTip="Edit documents" Width="941"  >

并在代码中

public CultureInfo defaultLanguage;
public CultureInfo ci;
private void cbbLanguage_DropDownClosed(object sender, EventArgs e)
{

    int iLcid = Int32.Parse(_lstLanguages[this.cbbLanguage.SelectedIndex].LanguageId);
    ci = new System.Globalization.CultureInfo(iLcid);
    System.Threading.Thread.CurrentThread.CurrentCulture = ci;
    System.Threading.Thread.CurrentThread.CurrentUICulture = ci;
    CultureInfo ci2 = CultureInfo.CreateSpecificCulture(ci.Name);

    //InputLanguageManager.SetInputLanguage(this.rtbDoc, CultureInfo.CreateSpecificCulture(ci2.Name));
    XmlLanguage xl = this.rtbDoc.Document.Language;
    XmlLanguage xl2 = XmlLanguage.GetLanguage(ci2.IetfLanguageTag);

    // this works in changing the property but nothing changes in the doc
    this.rtbDoc.Language = xl2;  

    if (this.rtbDoc.Selection.Text.Length > 1)
    {
        // this works to change the property and the spellchecker shows the entire 
        // doc content misspelled, but the selected text remains english
        this.rtbDoc.Selection.ApplyPropertyValue(FrameworkElement.LanguageProperty, xl2);  
    }

}

private void ChangeLanguage(object sender, RoutedEventArgs e)
    {
        defaultLanguage = InputLanguageManager.Current.CurrentInputLanguage;
        InputLanguageManager.Current.CurrentInputLanguage = CultureInfo.CreateSpecificCulture(ci.Name);

    }

private void ChangeToDefault(object sender, RoutedEventArgs e)
    {
        InputLanguageManager.Current.CurrentInputLanguage = defaultLanguage;

如何将cultureinfo（语言）属性应用于WPF richtextbox选择

2 个答案: