如何通过C＃以编程方式知道列表选择器中选择的菜单。 [英] How to know what menu is selected in the list picker by C# programmatically.?

问题描述

嗯，这是


我的应用程序中有`listpicker`。我从`Data Binding`中显示了`listpicker`的菜单项。


$
我现在需要通过c＃编程来查看`ListPicker`中的菜单项。例如，`CategoriesList`是我为这个`ListPicker`创建的Binding。在`CategoriesList`中，我有`Bank`，`Email`，`Personal`和`Gadgets`。这些是listpicker的菜单项
。



如何通过C＃以编程方式知道列表选择器中选择的菜单。



XAML代码：

< toolkit：ListPicker 
X：名称= QUOT; categoriesListPicker" 
 ItemsSource =" {Binding CategoriesList}" 
 DisplayMemberPath =" Name"> 

C＃代码失败;

 var list = categoriesListPicker.Text; 
开关（清单）
 {
 case" Bank"：
 // ..做一些事情
 case" Email"：
 //。做某事
 case" Personal"：
 // ..做点什么
} 

它失败了。错误：
$

 
'Microsoft.Phone.Controls.ListPicker'不包含'Text'的定义，也没有扩展名方法'Text'
 
接受类型为'Microsoft.Phone.Controls.ListPicker'的第一个参数可以找到
 
（你是否缺少using指令或汇编引用？）
 

---

- Mohamed Thaufeeq A

解决方案

你可以用

 categoriesListPicker.SelectedItem <获取所选对象/ pre> 
 
你必须从模型中转换对象，如
 CategoryListType obj = categoriesListPicker.SelectedItem as CategoryListType; 
 
 if（obj！= null）
 {
 //用你的对象做一些事情
 Messagebox.show（obj.Bank）; 
} 
 
 
 
希望这会有所帮助。

Well,

I have `listpicker` in my app. I have shown the menu items for the `listpicker` from `Data Binding`.

I need to what menu item is in the `ListPicker` right now, by c# programmatically. For Example, `CategoriesList` is the Binding I have created for this `ListPicker`. In `CategoriesList`, I have `Bank`, `Email`, `Personal` and `Gadgets`. These are the menu items for the listpicker.

How to know what menu is selected in the list picker by C# programmatically.

XAML CODE:

    <toolkit:ListPicker
     x:Name="categoriesListPicker"
    ItemsSource="{Binding CategoriesList}"
    DisplayMemberPath="Name">

Failed C# Code;

    var list = categoriesListPicker.Text;
    switch(list)
    {
    case "Bank":
    //.. do something
    case "Email":
    //.. do something
    case "Personal":
    //.. do something
    }

It fails. Error:

'Microsoft.Phone.Controls.ListPicker' does not contain a definition for 'Text' and no extension method 'Text'
 accepting a first argument of type 'Microsoft.Phone.Controls.ListPicker' could be found 
(are you missing a using directive or an assembly reference?)

---

- Mohamed Thaufeeq A

解决方案

Hi,

you can get the selected object with

categoriesListPicker.SelectedItem

You have to cast the object from your model like

CategoryListType obj = categoriesListPicker.SelectedItem as CategoryListType;

if(obj != null)
{
  // do something with your object
  Messagebox.show(obj.Bank);
}

Hope this helps.

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