wpf 如何以编程方式设置文本框与字符串格式的绑定？
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How to programatically set the binding of a textbox with stringformat?
提问by JSchwartz
How do I programmatically do the following (from the XAML):
我如何以编程方式执行以下操作（来自 XAML）：
<TextBox Name="OrderDateText"
Text="{Binding Path=OrderDate, StringFormat=dd-MM-yyyy}"
public DateTime OrderDate
Right now I have the following
现在我有以下内容
TextBox txtboxOrderdDate = new TextBox();
And I know I need to do something like
我知道我需要做类似的事情
Binding bindingOrderDate = new Binding();
bindingOrderDate.Source = "OrderDate";
But I am stuck here ... not sure how to proceed to apply the StringFormat nor am I sure that SOURCE is the correct way (should I be using ElementName?)
但我被困在这里......不确定如何继续应用 StringFormat 也不确定 SOURCE 是正确的方法（我应该使用 ElementName 吗？）
回答by Ramesh Durai
Let MainWindowbe the Class Name. Change MainWindowin the below code to your class name.
让MainWindow成为类名。MainWindow将下面的代码更改为您的班级名称。
public DateTime OrderDate
{
get { return (DateTime) GetValue(OrderDateProperty); }
set { SetValue(OrderDateProperty, value); }
}
public static readonly DependencyProperty OrderDateProperty =
DependencyProperty.Register("OrderDate",
typeof (DateTime),
typeof (MainWindow),
new PropertyMetadata(DateTime.Now, // Default value for the property
new PropertyChangedCallback(OnOrderDateChanged)));
private static void OnOrderDateChanged(object sender, DependencyPropertyChangedEventArgs args)
{
MainWindow source = (MainWindow) sender;
// Add Handling Code
DateTime newValue = (DateTime) args.NewValue;
}
public MainWindow()
{
InitializeComponent();
OrderDateText.DataContext = this;
var binding = new Binding("OrderDate")
{
StringFormat = "dd-MM-yyyy"
};
OrderDateText.SetBinding(TextBox.TextProperty, binding);
//Testing
OrderDate = DateTime.Now.AddDays(2);
}
回答by It'sNotALie.
Have you tried setting the bindingOrderDate's StringFormatproperty to the proper format? That's how it should work, according to MSDN.
您是否尝试将bindingOrderDate的StringFormat属性设置为正确的格式？根据 MSDN，它应该是这样工作的。
回答by Haritha
回答by Chamath Jeevan
?Object data = new Object();
? ? ? ? ? ?TextBox txtboxOrderdDate = new TextBox();
? ? ? ? ? ?Binding bindingOrderDate = new Binding("Order Date", data, "OrderDate");
? ? ? ? ? ?bindingOrderDate.Format += new ConvertEventHandler(DecimalToCurrencyString);
? ? ? ? ? ?txtboxOrderdDate.DataBindings.Add(bindingOrderDate);
? ?private void DecimalToCurrencyString(object sender, ConvertEventArgs cevent)
? ? ? ?{
? ? ? ? ? ?if (cevent.DesiredType != typeof(string)) return;
? ? ? ? ? ?cevent.Value = ((decimal)cevent.Value).ToString("dd-MM-yyyy");
? ? ? ?}
//[For more information check MSDN][1]
