Question

在动态构建的UserControl中，我通过以下方式为format string设置了TextBox：

TextBox newTextBox = new TextBox();

TempViewModel viewModel = new TempViewModel();
var binding = new System.Windows.Data.Binding
{
    Source = viewModel,
    Path = new PropertyPath("DecimalValue"),
    ConverterCulture = new System.Globalization.CultureInfo("de-DE"),
    StringFormat = "{0:#,##0.00}"
};

newTextBox.SetBinding(TextBox.TextProperty, binding);

public class TempViewModel
{
    public decimal DecimalValue { get; set; }
}

到目前为止效果很好。

但添加依赖项属性后，格式将被忽略。 Dependencyproperty的定义方式如下：

public class UserControl_CBOGridQuotePositions : UserControl
{

    private static readonly DependencyProperty Amount_QuotePos_Base_DependencyProperty =
        DependencyProperty.Register("Amount_QuotePos_Base", typeof(System.Decimal), typeof(UserControl_CBOGridQuotePositions), new PropertyMetadata(0m));

    public System.Decimal Amount_QuotePos_Base
    {
        get { return (System.Decimal)GetValue(UserControl_CBOGridQuotePositions.Amount_QuotePos_Base_DependencyProperty); }
        set { SetValue(UserControl_CBOGridQuotePositions.Amount_QuotePos_Base_DependencyProperty, value); }
    }

    private void MakeTheBindings(DependencyProperty dependencyProperty)
    {
        var binding = new Binding("Amount_QuotePos_Base");
        binding.Source = this; // which is the UserControl_CBOGridQuotePositions

        newTextBox.SetBinding(dependencyProperty, binding);
    }
}

当TextBox绑定到属性时，是否有办法使格式起作用？

Answer 1

因为在MakeTheBindings（）中，您要用新的绑定替换绑定。确保执行此操作时var binding = new Binding（“ Amount_QuotePos_Base”）;您还设置了所有属性，例如ConverterCulture和StringFormat

将TextBox绑定到属性后，格式字符串将被忽略

1 个答案: