在 DataGrid 中使用 WPF 格式化日期
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Format date using WPF in DataGrid
提问by Andrew N
I have a DataGridthat has a Start Time column. This is bound to a string field which holds the time in the format hh:mm:ss. However, I want to only display the time in the grid in the format hh:mm. Is there a way of achieving this using the string format attribute in Binding.
我有一个 DataGrid，它有一个 Start Time 列。这绑定到一个字符串字段，该字段以 hh:mm:ss 格式保存时间。但是，我只想以 hh:mm 的格式在网格中显示时间。有没有办法使用绑定中的字符串格式属性来实现这一点。
回答by dovid
like this:
像这样：
<DataGridTextColumn Binding="{Binding MyDate, StringFormat='HH:mm'}" />
回答by Andrew N
I've exhausted my search for trying to find out if there was a way for the StringFormat attribute of Binding in WPF to convert a string to a date and then format it as HH:mm.
我已经竭尽全力寻找 WPF 中 Binding 的 StringFormat 属性是否有办法将字符串转换为日期，然后将其格式化为 HH:mm。
So I've gone about creating a converter to do the same as suggested above. Thought I'd paste it here for use by anyone who has such a need.
所以我已经开始创建一个转换器来做与上面建议的相同的事情。我想我会把它贴在这里供有这种需要的任何人使用。
public class StringToDateConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (value == null)
{
return string.Empty;
}
DateTime d;
try
{
d = System.Convert.ToDateTime(value);
return d;
// The WPF code that uses this converter will then use the stringformat
// attribute in binding to display just HH:mm part of the date as required.
}
catch (Exception)
{
// If we're unable to convert the value, then best send the value as is to the UI.
return value;
}
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
//Insert your implementation here...
return value;
}
}
And here is how you achieve the result in WPF.
这是您如何在 WPF 中实现结果。
<DataGridTextColumn Header="Start Time" Width="Auto" Binding="{Binding VisitOpStartTime, Converter={StaticResource s2dConverter}, StringFormat=\{0:HH:mm\}}"></DataGridTextColumn>
Lastly, don't forget to add the following, customised ofcourse to your needs.
最后，不要忘记添加以下定制课程以满足您的需求。
xmlns:converter="clr-namespace:[YourAppNamespace].Converters"
<Window.Resources>
<converter:StringToDateConverter x:Key="s2dConverter" />
</Window.Resources>
Hope this helps.
希望这可以帮助。
