我想創建一個用戶控件來獲取用戶的日期。它應該有三個文本框,一個用於年,月和日。我不知道如何創建它。Wpf自定義日期選擇器用戶控件
<UserControl x:Class="UI.WPF.CustomControls.ChooseDateControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
x:Name="chooseDateControl"
xmlns:custom="clr-namespace:UI.WPF.CustomControls"
d:DesignHeight="26" d:DesignWidth="181" FontFamily="Tahoma">
<DockPanel LastChildFill="True">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1.5*" />
<ColumnDefinition Width="14" />
<ColumnDefinition Width="1*" />
<ColumnDefinition Width="14" />
<ColumnDefinition Width="1*" />
</Grid.ColumnDefinitions>
<Label Content="/" Grid.Column="1" />
<Label Content="/" Grid.Column="3" />
<custom:NumericTextBox x:Name="txtYear" ToolTip="سال" Text="{Binding ElementName=chooseDateControl, Mode=TwoWay, Path=Year}" MaxLength="4" TabIndex="2" MinWidth="20" />
<custom:NumericTextBox x:Name="txtMonth" Grid.Column="2" ToolTip="ماه" Text="{Binding ElementName=chooseDateControl, Mode=TwoWay, Path=Month}" MaxLength="2" TabIndex="1" MinWidth="20" />
<custom:NumericTextBox x:Name="txtDay" Grid.Column="4" ToolTip="روز" Text="{Binding ElementName=chooseDateControl, Mode=TwoWay, Path=Day}" MaxLength="2" TabIndex="0" MinWidth="20" />
</Grid>
</DockPanel>
代碼隱藏
public partial class ChooseDateControl : UserControl
{
public static readonly DependencyProperty ValueProperty;
public static readonly DependencyProperty YearProperty;
public static readonly DependencyProperty MonthProperty;
public static readonly DependencyProperty DayProperty;
static ChooseDateControl()
{
ValueProperty = DependencyProperty.Register(
"Value",
typeof(DateTime), typeof(ChooseDateControl),
new FrameworkPropertyMetadata(DateTime.MinValue));
ValueProperty = DependencyProperty.Register(
"Year",
typeof(int), typeof(ChooseDateControl),
new FrameworkPropertyMetadata((int)0));
ValueProperty = DependencyProperty.Register(
"Month",
typeof(int), typeof(ChooseDateControl),
new FrameworkPropertyMetadata((int)0));
ValueProperty = DependencyProperty.Register(
"Day",
typeof(int), typeof(ChooseDateControl),
new FrameworkPropertyMetadata((int)0));
}
public ChooseDateControl()
{
InitializeComponent();
}
public DateTime Value
{
get
{
return (DateTime)base.GetValue(ValueProperty);
}
set
{
base.SetValue(ValueProperty, value);
}
}
public int Year
{
get
{
return (int)base.GetValue(YearProperty);
}
set
{
base.SetValue(YearProperty, value);
}
}
public int Month
{
get
{
return (int)base.GetValue(MonthProperty);
}
set
{
base.SetValue(MonthProperty, value);
}
}
public int Day
{
get
{
return (int)base.GetValue(DayProperty);
}
set
{
base.SetValue(DayProperty, value);
}
}
}
它不工作correctly--它返回默認值,這是DateTime.MinValue。請幫幫我。
你仍然需要修復你的財產註冊。您正在將所有內容註冊到ValueProperty。請確保您更改爲設置YearProperty,MonthyProperty等...... –
設置值的邏輯還存在一些問題,對於您從不設置Value屬性的問題。您可能需要查看擴展WPF工具包中的DatTimeUpDown控件,以瞭解它在此處的處理方式:http://wpftoolkit.codeplex.com/ –
我假設您要使用Value屬性作爲用於數據綁定。這意味着你將不得不處理屬性changted call basck中的Value屬性來設置其他屬性值。在其他的回調函數中,您可能需要使用新的D/M/Y組合來設置Value屬性。 –