假设我的容器中有以下数据:
{
"id": "1DBF704E-1623-4844-DC86-EFA729A5C048",
"firstName": "Wylie",
"lastName": "Ramsey",
"country": "AZ",
"city": "Tucson"
}
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当我查询特定分区键时,我使用字段“id”作为项目 id,使用字段“country”作为分区键:
SELECT * FROM c WHERE c.country = "AZ"
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(获取“AZ”中的所有人员)
我应该添加“国家/地区”作为索引,还是默认获得它,因为我将“国家/地区”作为分区键?使用 SDK 时是否有区别(即:添加选项new PartitionKey("AZ"),然后发送如上所述的查询)?
我正在尝试创建一个带有控件TextBox和 的搜索框ListBox。当我开始TextBox输入事件处理程序时GotFocus,打开ListBox. 我希望在未聚焦ListBox时将其关闭。我尝试在 中TextBox使用该事件,但没有成功。LostFocusTextBox
我应该在哪个事件处理程序中使用?我没有找到实现这种机制的好例子。
编辑:我有类似的东西:
<Canvas Name="m_MainCanvas" Grid.ColumnSpan="2" >
<Rectangle MouseDown="Canvas_MouseDown" Fill="White" Height="280" HorizontalAlignment="Left" Margin="256,12,0,0" x:Name="m_MainRectangle" RadiusX="0" RadiusY="0" Stroke="Black" StrokeThickness="3" VerticalAlignment="Top" Width="238" />
<TextBox Height="23" Margin="10,0,0,210" Name="m_SearchTextBox" VerticalAlignment="Bottom" BorderThickness="0.5" BorderBrush="#69000000" TextChanged="m_SearchTextBox_TextChanged" FontFamily="Kristen ITC" Text="" FontSize="14" FontWeight="Black" HorizontalAlignment="Left" Width="165" Canvas.Top="86" Canvas.Left="274" LostFocus="m_SearchTextBox_LostFocus"/>
<ListBox ItemTemplate="{DynamicResource ListBoxItemDataTemplate}" ItemsSource="{Binding}" Name="m_FriendsSearchList" Visibility="Hidden" Background="#FFBCEB85" Width="181" Height="193" Canvas.Left="283" Canvas.Top="118">
<ListBox.ItemContainerStyle>
<Style TargetType="{x:Type ListBoxItem}">
<EventSetter Event="MouseDoubleClick" Handler="HandleDoubleClickItemToSelect" />
</Style>
</ListBox.ItemContainerStyle>
</ListBox> …Run Code Online (Sandbox Code Playgroud) 我读过这篇关于使用可靠集合的文章,其中提到,一旦将对象提供给可靠集合,就不得修改对象,而更新可靠集合中的值的正确方法是获取副本(克隆)值,检查克隆值,然后更新 RC 中的克隆值。
\n\n使用不当:
\n\nusing (ITransaction tx = StateManager.CreateTransaction()) {\n // Use the user\xe2\x80\x99s name to look up their data\n ConditionalValue<User> user = \n await m_dic.TryGetValueAsync(tx, name);\n\n // The user exists in the dictionary, update one of their properties.\n if (user.HasValue) {\n // The line below updates the property\xe2\x80\x99s value in memory only; the\n // new value is NOT serialized, logged, & sent to secondary replicas.\n user.Value.LastLogin = DateTime.UtcNow; // Corruption!\n await tx.CommitAsync(); \n …Run Code Online (Sandbox Code Playgroud)