Impossibile trovarne uno sul Web, quindi l'ho creato da zero. Non capisco completamente le proprietà di dipendenza, quindi per ora sono omesso. Il controllo è un controllo di selezione orario di 12 ore. Sono nuovo di WPF quindi non capisco completamente tutte le nuove sintassi del linguaggio, ma questo controllo farà il trucco per me nel progetto che sto creando a casa.
Supporta il tempo di impostazione come DateTime o TimeSpan.
Sotto incollerò XAML e Code-Behind. Il XAML
<UserControl x:Class="WorkDayManager3.WPF.UserControls.TimeControl"
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"
d:DesignHeight="35" d:DesignWidth="100">
<Border BorderBrush="LightBlue" BorderThickness="1" Margin="1">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="5" />
<ColumnDefinition />
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<TextBox x:Name="txtHours" BorderThickness="0" MaxLength="2" TextAlignment="Center" HorizontalAlignment="Center" VerticalAlignment="Center" Text="1" KeyUp="txt_KeyUp" MouseWheel="txt_MouseWheel" PreviewKeyUp="txt_PreviewKeyUp" />
<TextBlock Text=":" Grid.Column="1" HorizontalAlignment="Center" VerticalAlignment="Center" />
<TextBox x:Name="txtMinutes" BorderThickness="0" MaxLength="2" TextAlignment="Center" Grid.Column="2" HorizontalAlignment="Center" VerticalAlignment="Center" Text="00" KeyUp="txt_KeyUp" MouseWheel="txt_MouseWheel" PreviewKeyUp="txt_PreviewKeyUp" />
<TextBox x:Name="txtAmPm" BorderThickness="0" MaxLength="2" TextAlignment="Center" Grid.Column="3" HorizontalAlignment="Left" VerticalAlignment="Center" PreviewTextInput="txtAmPm_PreviewTextInput" Text="AM" KeyUp="txt_KeyUp" MouseWheel="txt_MouseWheel" Padding="0, 0, 3, 0" />
<Grid Grid.Column="4">
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<Button x:Name="btnUp" Focusable="False" Click="btnUp_Click">
<TextBlock Text="p" FontFamily="Wingdings 3" HorizontalAlignment="Center" VerticalAlignment="Center" />
</Button>
<Button x:Name="btnDown" Grid.Row="1" Focusable="False" Click="btnDown_Click">
<TextBlock Text="q" FontFamily="Wingdings 3" HorizontalAlignment="Center" VerticalAlignment="Center" />
</Button>
</Grid>
</Grid>
</Border>
</UserControl>
code-behind
using System;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
namespace WorkDayManager3.WPF.UserControls
{
/// <summary>
/// Interaction logic for TimeControl.xaml
/// </summary>
public partial class TimeControl : UserControl
{
public TimeControl()
{
InitializeComponent();
}
#region Properties
/// <summary>
/// Gets or sets the date time value.
/// </summary>
/// <value>The date time value.</value>
public DateTime? DateTimeValue
{
get
{
string hours = this.txtHours.Text;
string minutes = this.txtMinutes.Text;
string amPm = this.txtAmPm.Text;
if (!string.IsNullOrWhiteSpace(hours)
&& !string.IsNullOrWhiteSpace(minutes)
&& !string.IsNullOrWhiteSpace(amPm))
{
string value = string.Format("{0}:{1} {2}", this.txtHours.Text, this.txtMinutes.Text, this.txtAmPm.Text);
DateTime time = DateTime.Parse(value);
return time;
}
else
{
return null;
}
}
set
{
DateTime? time = value;
if (time.HasValue)
{
string timeString = time.Value.ToShortTimeString();
//9:54 AM
string[] values = timeString.Split(':', ' ');
if (values.Length == 3)
{
this.txtHours.Text = values[0];
this.txtMinutes.Text = values[1];
this.txtAmPm.Text = values[2];
}
}
}
}
/// <summary>
/// Gets or sets the time span value.
/// </summary>
/// <value>The time span value.</value>
public TimeSpan? TimeSpanValue
{
get
{
DateTime? time = this.DateTimeValue;
if (time.HasValue)
{
return new TimeSpan(time.Value.Ticks);
}
else
{
return null;
}
}
set
{
TimeSpan? timeSpan = value;
if (timeSpan.HasValue)
{
this.DateTimeValue = new DateTime(timeSpan.Value.Ticks);
}
}
}
#endregion
#region Event Subscriptions
/// <summary>
/// Handles the Click event of the btnDown control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.Windows.RoutedEventArgs"/> instance containing the event data.</param>
private void btnDown_Click(object sender, RoutedEventArgs e)
{
string controlId = this.GetControlWithFocus().Name;
if ("txtHours".Equals(controlId))
{
this.ChangeHours(false);
}
else if ("txtMinutes".Equals(controlId))
{
this.ChangeMinutes(false);
}
else if ("txtAmPm".Equals(controlId))
{
this.ToggleAmPm();
}
}
/// <summary>
/// Handles the Click event of the btnUp control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.Windows.RoutedEventArgs"/> instance containing the event data.</param>
private void btnUp_Click(object sender, RoutedEventArgs e)
{
string controlId = this.GetControlWithFocus().Name;
if ("txtHours".Equals(controlId))
{
this.ChangeHours(true);
}
else if ("txtMinutes".Equals(controlId))
{
this.ChangeMinutes(true);
}
else if ("txtAmPm".Equals(controlId))
{
this.ToggleAmPm();
}
}
/// <summary>
/// Handles the PreviewTextInput event of the txtAmPm control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.Windows.Input.TextCompositionEventArgs"/> instance containing the event data.</param>
private void txtAmPm_PreviewTextInput(object sender, TextCompositionEventArgs e)
{
// prevent users to type text
e.Handled = true;
}
/// <summary>
/// Handles the KeyUp event of the txt control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.Windows.Input.KeyEventArgs"/> instance containing the event data.</param>
private void txt_KeyUp(object sender, KeyEventArgs e)
{
// check for up and down keyboard presses
if (Key.Up.Equals(e.Key))
{
btnUp_Click(this, null);
}
else if (Key.Down.Equals(e.Key))
{
btnDown_Click(this, null);
}
}
/// <summary>
/// Handles the MouseWheel event of the txt control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.Windows.Input.MouseWheelEventArgs"/> instance containing the event data.</param>
private void txt_MouseWheel(object sender, MouseWheelEventArgs e)
{
if (e.Delta > 0)
{
btnUp_Click(this, null);
}
else
{
btnDown_Click(this, null);
}
}
/// <summary>
/// Handles the PreviewKeyUp event of the txt control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.Windows.Input.KeyEventArgs"/> instance containing the event data.</param>
private void txt_PreviewKeyUp(object sender, KeyEventArgs e)
{
TextBox textBox = (TextBox)sender;
// make sure all characters are number
bool allNumbers = textBox.Text.All(Char.IsNumber);
if (!allNumbers)
{
e.Handled = true;
return;
}
// make sure user did not enter values out of range
int value;
int.TryParse(textBox.Text, out value);
if ("txtHours".Equals(textBox.Name) && value > 12)
{
EnforceLimits(e, textBox);
}
else if ("txtMinutes".Equals(textBox.Name) && value > 59)
{
EnforceLimits(e, textBox);
}
}
#endregion
#region Methods
/// <summary>
/// Changes the hours.
/// </summary>
/// <param name="isUp">if set to <c>true</c> [is up].</param>
private void ChangeHours(bool isUp)
{
int value = Convert.ToInt32(this.txtHours.Text);
if (isUp)
{
value += 1;
if (value == 13)
{
value = 1;
}
}
else
{
value -= 1;
if (value == 0)
{
value = 12;
}
}
this.txtHours.Text = Convert.ToString(value);
}
/// <summary>
/// Changes the minutes.
/// </summary>
/// <param name="isUp">if set to <c>true</c> [is up].</param>
private void ChangeMinutes(bool isUp)
{
int value = Convert.ToInt32(this.txtMinutes.Text);
if (isUp)
{
value += 1;
if (value == 60)
{
value = 0;
}
}
else
{
value -= 1;
if (value == -1)
{
value = 59;
}
}
string textValue = Convert.ToString(value);
if (value < 10)
{
textValue = "0" + Convert.ToString(value);
}
this.txtMinutes.Text = textValue;
}
/// <summary>
/// Enforces the limits.
/// </summary>
/// <param name="e">The <see cref="System.Windows.Input.KeyEventArgs"/> instance containing the event data.</param>
/// <param name="textBox">The text box.</param>
/// <param name="enteredValue">The entered value.</param>
private static void EnforceLimits(KeyEventArgs e, TextBox textBox)
{
string enteredValue = GetEnteredValue(e.Key);
string text = textBox.Text.Replace(enteredValue, "");
if (string.IsNullOrEmpty(text))
{
text = enteredValue;
}
textBox.Text = text;
e.Handled = true;
}
/// <summary>
/// Gets the control with focus.
/// </summary>
/// <returns></returns>
private TextBox GetControlWithFocus()
{
TextBox txt = new TextBox();
if (this.txtHours.IsFocused)
{
txt = this.txtHours;
}
else if (this.txtMinutes.IsFocused)
{
txt = this.txtMinutes;
}
else if (this.txtAmPm.IsFocused)
{
txt = this.txtAmPm;
}
return txt;
}
/// <summary>
/// Gets the entered value.
/// </summary>
/// <param name="key">The key.</param>
/// <returns></returns>
private static string GetEnteredValue(Key key)
{
string value = string.Empty;
switch (key)
{
case Key.D0:
case Key.NumPad0:
value = "0";
break;
case Key.D1:
case Key.NumPad1:
value = "1";
break;
case Key.D2:
case Key.NumPad2:
value = "2";
break;
case Key.D3:
case Key.NumPad3:
value = "3";
break;
case Key.D4:
case Key.NumPad4:
value = "4";
break;
case Key.D5:
case Key.NumPad5:
value = "5";
break;
case Key.D6:
case Key.NumPad6:
value = "6";
break;
case Key.D7:
case Key.NumPad7:
value = "7";
break;
case Key.D8:
case Key.NumPad8:
value = "8";
break;
case Key.D9:
case Key.NumPad9:
value = "9";
break;
}
return value;
}
/// <summary>
/// Toggles the am pm.
/// </summary>
private void ToggleAmPm()
{
if ("AM".Equals(this.txtAmPm.Text))
{
this.txtAmPm.Text = "PM";
}
else
{
this.txtAmPm.Text = "AM";
}
}
#endregion
}
}
Questo è il controllo, si sentono liberi di apportare modifiche in base alle esigenze. Non è perfetto, ma è meglio di altri controlli ho trovato
Questo è un bell'esempio, mi basta prendere l'input da tastiera e mouse senza modificare il codice. :-) – wonea
il time picker è terribile – CRice