wpf 如何在 XAML 中将 FormatString 作为 ConverterParameter 传递
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How to pass a FormatString as ConverterParameter in XAML
提问by Eugene Maksimov
I have a binding with converter. I want to pass the "#,,.0M" format string as converter parameter.
我与转换器有绑定。我想将“#,,.0M”格式字符串作为转换器参数传递。
This xaml in not valid:
此 xaml 无效：
<local:SalesPerformanceControl FirstSalesVolume="{Binding Path=TodaySalesVolume, Converter={StaticResource ResourceKey=decimalToFormatedStringConverter}, ConverterParameter=#,,.0M}"/>
Error:
错误：
The type '' was not found.
未找到类型 ''。
How to pass this string correctly?
如何正确传递这个字符串？
回答by Nitin
Either use single quotes on the string to be passed:
在要传递的字符串上使用单引号：
<local:SalesPerformanceControl FirstSalesVolume="{Binding Path=TodaySalesVolume, Converter={StaticResource ResourceKey=decimalToFormatedStringConverter}, ConverterParameter='#,,.0M'}"/>
OR use elaborate syntax to bind like below:
或使用复杂的语法进行绑定，如下所示：
<local:SalesPerformanceControl>
<local:SalesPerformanceControl.FirstSalesVolume>
<Binding Path="TodaySalesVolume" Converter="{StaticResource decimalToFormatedStringConverter}" ConverterParameter="#,,.0M" />
</local:SalesPerformanceControl.FirstSalesVolume>
</local:SalesPerformanceControl>
回答by Debashrita
One of the way can be declare your string in resources and pass it to your converter.
其中一种方法是在资源中声明您的字符串并将其传递给您的转换器。
<UserControl.Resources>
<sys:String x:Name="strParam">#,,.0M</sys:String>
</UserControl.Resources>
Add like as bellow
添加如下
<local:SalesPerformanceControl FirstSalesVolume="{Binding Path=TodaySalesVolume, Converter={StaticResource ResourceKey=decimalToFormatedStringConverter}, ConverterParameter={StaticResource strParam}}"/>
may help you
可能会帮助你
回答by Omri Btian
Try saving the string as a resource.
尝试将字符串保存为资源。
First add the following xmlnsdeclaration
首先添加以下xmlns声明
xmlns:sys="clr-namespace:System;assembly=mscorlib"
Then save the string in the resources
然后将字符串保存在资源中
<sys:String x:Key="format">#,,.0M</sys:String>
And use it as follows
并按如下方式使用它
<local:SalesPerformanceControl FirstSalesVolume="{Binding Path=TodaySalesVolume, Converter={StaticResource ResourceKey=decimalToFormatedStringConverter}, ConverterParameter={StaticResource ResourceKey=format}}"/>
