我有一个包含两个TextBox的样式，以便创建PlaceHolder / Watermark，到目前为止工作正常。
唯一的例外是事件被触发两次，第一个来自{{1我有CustomTextBox，第二个来自我Style中的CustomTextBox。
有没有办法阻止这种行为？我已经尝试设置XAML和IsEnable="False"，但似乎无法正常工作。
这里我用来模拟水印的风格：
ReadOnly="True"任何帮助将不胜感激。提前谢谢。
编辑1：事件处理的<Style x:Key="CustomTextBoxStyle"
TargetType="{x:Type utils:CustomTextBox}">
<Setter Property="FontFamily"
Value="/UserInterface;component/Resources/Fonts/#Avenir LT Std 35 Light" />
<Setter Property="FontSize"
Value="16" />
<Setter Property="Foreground"
Value="#FF414042" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type utils:CustomTextBox}">
<Border Name="Border"
BorderBrush="#FF348781"
BorderThickness="0,0,0,4"
CornerRadius="2">
<ScrollViewer x:Name="PART_ContentHost"
Margin="0" />
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal" />
<VisualState x:Name="Disabled" />
<VisualState x:Name="ReadOnly" />
<VisualState x:Name="MouseOver" />
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type utils:CustomTextBox}"
BasedOn="{StaticResource CustomTextBoxStyle}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type utils:CustomTextBox}">
<Grid>
<utils:CustomTextBox
Text="{TemplateBinding Text}"
x:Name="textSource"
Background="Transparent"
Panel.ZIndex="2"
Style="{StaticResource CustomTextBoxStyle}"
KeyboardViewModel="{TemplateBinding KeyboardViewModel}"/>
<utils:CustomTextBox Text="{TemplateBinding HintText}"
Background="{TemplateBinding Background}"
Panel.ZIndex="1"
IsEnabled="False">
<utils:CustomTextBox.Style>
<Style TargetType="{x:Type utils:CustomTextBox}"
BasedOn="{StaticResource CustomTextBoxStyle}">
<Setter Property="Foreground"
Value="Transparent" />
<Style.Triggers>
<DataTrigger Binding="{Binding Path=Text, Source={x:Reference textSource}}"
Value="">
<Setter Property="Foreground"
Value="Gray" />
<Setter Property="HorizontalContentAlignment"
Value="Left" />
<Setter Property="VerticalContentAlignment"
Value="Center" />
</DataTrigger>
</Style.Triggers>
</Style>
</utils:CustomTextBox.Style>
</utils:CustomTextBox>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
类的代码
CustomTextBox编辑2：
在protected override void OnKeyDown(KeyEventArgs e)
{
//Filtering "solution"
if (e.Source is CustomTextBox sourceTextBox && sourceTextBox.Name.Equals("textSource"))
{
return;
}
base.OnKeyDown(e);
if (e.Key == Key.Enter && EnterKeyCommand != null)
{
if (EnterKeyCommand.CanExecute(null))
{
EnterKeyCommand.Execute(null);
}
}
}
上使用CustomTextBox：
UserControl答案 0 :(得分：0)
根据您的评论，首先它来自＆＃34;测试源＆＃34;然后转到CustomTextBox表示在第一个用户控件上收到KeyDown事件，然后传递给第二个用户控件。
您能否确保将Operations to perform:
Apply all migrations: delta_device, admin, menu, sessions, datapipeline, datacollector, siemens_s7, contenttypes, auth, settings
Running migrations:
Rendering model states... DONE
Applying delta_device.0002_auto_20171210_1631...Traceback (most recent call last):
File "./manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 350, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 342, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 348, in run_from_argv
self.execute(*args, **cmd_options)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 399, in execute
output = self.handle(*args, **options)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/migrate.py", line 200, in handle
executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 92, in migrate
self._migrate_all_forwards(plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 121, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 198, in apply_migration
state = migration.apply(state, schema_editor)
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/migration.py", line 123, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/operations/fields.py", line 201, in database_forwards
schema_editor.alter_field(from_model, from_field, to_field)
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/schema.py", line 482, in alter_field
old_db_params, new_db_params, strict)
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/schema.py", line 565, in _alter_field
new_default = self.effective_default(new_field)
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/schema.py", line 210, in effective_default
default = field.get_db_prep_save(default, self.connection)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 728, in get_db_prep_save
prepared=False)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 720, in get_db_prep_value
value = self.get_prep_value(value)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 1853, in get_prep_value
return int(value)
ValueError: invalid literal for int() with base 10: '0x000
放入＆＃34;测试源＆＃34;通知它是在第一个用户控件上处理的？
答案 1 :(得分：-1)
＆＃34;固定＆＃34;在评论中过滤{@ 1}}作为@Amol Bavannavar的消息：
e.Source