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我有一个没有使用 System.Windows.Forms 而是使用 System.Windows.Controls 的两个窗口基本系统，其中一个创建了一个 FontDialog，所以我必须包含 System.Windows.Forms，否则我将无法拥有字体对话框。在另一个窗口中，我有一个 RichTextBox，它应该使用在另一个窗口的 F​​ontDialog 中选择的字体/大小/样式。

这是创建 FontDialog 的窗口的类：

public partial class Window1 : Window
{
    public FontDialog font;

    public Window1(String name)
    {
        InitializeComponent();
        this.textBox1.Text = name;
    }

    private void button2_Click(object sender, RoutedEventArgs e)
    {
        font = new FontDialog();
        font.ShowDialog();
    }
}

在这里我调用 Window1 并尝试使用它的字体。

private void button2_Click(object sender, RoutedEventArgs e)
{
    Window1 a = new Window1(this.name);
    a.ShowDialog();

    var cvt = new FontConverter();
    string s = cvt.ConvertToString(a.font.Font);

    Console.Out.WriteLine("Value is: " + s);

    System.Windows.Media.FontFamily g = (System.Windows.Media.FontFamily) cvt.ConvertFromString(s);

    if (g != null)
    {
         this.textBox2.FontFamily = g;
    }
}

它准确地输出在 FontDialog 中选择的内容，但随后在“this.textBox2.FontFamily = g;”行崩溃：

Value is: Microsoft Sans Serif; 8,25pt
'_.NetworkingGT_Incrementer.vshost.exe' (Managed (v4.0.30319)): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\WindowsBase.resources\v4.0_4.0.0.0_pt-BR_31bf3856ad364e35\WindowsBase.resources.dll'
A first chance exception of type 'System.ArgumentException' occurred in WindowsBase.dll
A first chance exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll
A first chance exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll
'_.NetworkingGT_Incrementer.vshost.exe' (Managed (v4.0.30319)): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Xaml.resources\v4.0_4.0.0.0_pt-BR_b77a5c561934e089\System.Xaml.resources.dll'
A first chance exception of type 'System.Xaml.XamlObjectWriterException' occurred in System.Xaml.dll
A first chance exception of type 'System.Windows.Markup.XamlParseException' occurred in PresentationFramework.dll

An unhandled exception of type 'System.Windows.Markup.XamlParseException' occurred in PresentationFramework.dll
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1 回答 1

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解决了：

var cvt = new FontConverter();

string s = cvt.ConvertToString(a.font.Font);

Console.Out.WriteLine("Value is: " + s);

System.Windows.Media.FontFamily g = new System.Windows.Media.FontFamily(s);

Console.Out.WriteLine("Value is: " + g.ToString());

this.textBox2.FontFamily = g;

两个输出相等。

于 2013-02-01T05:21:37.837 回答