由於無法將值粘貼到DataGridTemplateColumn中。我發現了一些關於創建自己的從DataGridBoundColumn派生的列類的建議。下面的示例在不使用模板的情況下向該列添加DatePicker。如何將值設置爲WPF中的自定義DataGridBound列
但是,此示例不允許我使用DatePicker手動設置值,我不知道爲什麼。我認爲這是有約束力的東西。它會加載我最初綁定到它的日期值,因此它在一半的位置。
有趣的是,使用一些其他的輔助類,我可以粘貼日期以及這是origianl的目的。我只是不想破壞別的東西。 :-)
任何想法如何使datepicker選擇值正確綁定?
class MyDateColumn : DataGridBoundColumn
{
public string DateFormat { get; set; }
protected override void CancelCellEdit(FrameworkElement editingElement, object uneditedValue)
{
DatePicker dp = editingElement as DatePicker;
if (dp != null)
{
dp.SelectedDate = DateTime.Parse(uneditedValue.ToString());
}
}
protected override FrameworkElement GenerateEditingElement(DataGridCell cell, object dataItem)
{
DatePicker dp = new DatePicker();
Binding b = new Binding();
Binding bb = this.Binding as Binding;
b.Path = bb.Path;
b.Source = DatePicker.SelectedDateProperty;
if (DateFormat != null)
{
DateTimeConverter dtc = new DateTimeConverter();
b.Converter = dtc;
b.ConverterParameter = DateFormat;
}
dp.SetBinding(DatePicker.SelectedDateProperty, this.Binding);
return dp;
}
protected override FrameworkElement GenerateElement(DataGridCell cell, object dataItem)
{
TextBlock txt = new TextBlock();
Binding b = new Binding();
Binding bb = this.Binding as Binding;
b.Path = bb.Path;
b.Source = cell.DataContext;
if (DateFormat != null)
{
DateTimeConverter dtc = new DateTimeConverter();
b.Converter = dtc;
b.ConverterParameter = DateFormat;
}
txt.SetBinding(TextBlock.TextProperty, this.Binding);
return txt;
}
protected override object PrepareCellForEdit(FrameworkElement editingElement, RoutedEventArgs editingEventArgs)
{
DatePicker dp = editingElement as DatePicker;
if (dp != null)
{
DateTime? dt = dp.SelectedDate;
if (dt.HasValue)
return dt.Value;
}
return DateTime.Today;
}
protected override bool CommitCellEdit(FrameworkElement editingElement)
{
DatePicker dp = editingElement as DatePicker;
dp.SelectedDate = DateTime.Today.AddYears(1);
return true;
//return base.CommitCellEdit(editingElement);
}
}