将字符串转换为页面类型? [英] Convert String to type of Page?

问题描述

我想将字符串 DashBoard 转换为名为 DashBoard 的页面类型，因为我想在导航中使用它.通常我会导航到这样的页面

I want to Convert a string DashBoard to a type of page named as DashBoard because I wanted to use it in navigation purpose. Normally I navigate to some page like this

this.Frame.Navigate(typeof(DashBoard));

但是我想将DashBoard页面替换为这样的变量

but I want to DashBoard page to be replaced by variable like this

this.Frame.Navigate(typeof(Somestring));

推荐答案

您可以使用Type.GetType(string) [MSDN]

this.Frame.Navigate(Type.GetType(My.NameSpace.App.DashBoard,MyAssembly));

阅读有关如何设置字符串格式的说明部分.

Read the remarks section on how to format the string.

或者您可以使用反射:

using System.Linq;
public static class TypeHelper
{
    public static Type GetTypeByString(string type, Assembly lookIn)
    {
        var types = lookIn.DefinedTypes.Where(t => t.Name == type && t.IsSubclassOf(typeof(Windows.UI.Xaml.Controls.Page)));
        if (types.Count() == 0)
        {
            throw new ArgumentException("The type you were looking for was not found", "type");
        }
        else if (types.Count() > 1)
        {
            throw new ArgumentException("The type you were looking for was found multiple times.", "type");
        }
        return types.First().AsType();
    }
}

可以用作以下用途:

private void Button_Click(object sender, RoutedEventArgs e)
{
    this.Frame.Navigate(TypeHelper.GetTypeByString("TestPage", this.GetType().GetTypeInfo().Assembly));
}

在此示例中.该函数将在当前程序集中搜索名称为TestPage的页面，然后导航到该页面.

In this example. The function will search in the current assembly for a page with the name TestPage and then navigate to it.

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