WPF：如何让ComboBoxItems持有XAML整数 [英] wpf: how to make ComboBoxItems hold integers in xaml

问题描述

好吧，我必须在这里有一个脑冻...

我有6项的组合框，我想选择的项目绑定到一个整数值。它不工作，我怀疑其因为ComboBoxItem的是字符串。我不觉得像在code列清单的后面正好填补了这个小盒子，所以有在XAML的方式来告诉他们持有整数的comboboxitems？类似＆LT; X为：int＆GT; 2'; / X：诠释＆GT; 也许

XAML：

 ＆LT;组合框的SelectedItem ={结合SavedPrintTicket.PagesPerSheet}＆GT;
    ＆所述; ComboBoxItem→1＆下; / ComboBoxItem＆GT;
    ＆所述; ComboBoxItem→2＆下; / ComboBoxItem＆GT;
    ＆所述; ComboBoxItem→4＆下; / ComboBoxItem＆GT;
    ＆所述; ComboBoxItem→6＆下;​​ / ComboBoxItem＆GT;
    ＆所述; ComboBoxItem→8＆下; / ComboBoxItem＆GT;
    ＆所述; ComboBoxItem＆GT; 16＆下; / ComboBoxItem＆GT;
＆LT; /组合框＆GT;
 

解决方案

使用System命名空间：

 的xmlns：SYS =CLR的命名空间：系统;装配= mscorlib程序
 

和那么你的组合框可以包含像这样的整数：

 ＆LT;＆组合框GT;
   ＆LT; SYS：的Int32＆GT; 1 LT; / SYS：＆的Int32 GT;
＆LT; /组合框＆GT;
 

ok, I must be having a brain freeze here...

I have a ComboBox with 6 items and I'm trying to bind the selected item to an integer value. Its not working, I suspect its because the ComboBoxItem's are strings. I don't feel like making a list in code behind just to fill this little box, so is there a way in xaml to tell the comboboxitems that they are holding integer numbers? Something like <x:Int>2</x:Int> maybe?

xaml:

<ComboBox SelectedItem="{Binding SavedPrintTicket.PagesPerSheet}">
    <ComboBoxItem>1</ComboBoxItem>
    <ComboBoxItem>2</ComboBoxItem>
    <ComboBoxItem>4</ComboBoxItem>
    <ComboBoxItem>6</ComboBoxItem>
    <ComboBoxItem>8</ComboBoxItem>
    <ComboBoxItem>16</ComboBoxItem>
</ComboBox>

解决方案

Use the System namespace:

xmlns:sys="clr-namespace:System;assembly=mscorlib"

And then your combo-box can contain integers like so:

<ComboBox>
   <sys:Int32>1</sys:Int32>
</ComboBox>

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