C# 部分声明，不得指定不同的基类
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Partial declarations, must not specify different base classes
提问by NomenNescio
I know there is information about this on the internet and I've searched for it. But I'm still getting the error, can anyone point out to me what I'm doing wrong?
我知道互联网上有这方面的信息，我已经搜索过了。但是我仍然遇到错误，有人能指出我做错了什么吗？
Base class:
基类：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Controls;
namespace ProgramManagementV2.screens
{
public abstract class AScreenUserControl : UserControl
{
public string GetScreenDescriptionName()
{
return "No name yet!";
}
}
}
MainUserControl.xaml
主用户控件.xaml
<UserControl x:Class="ProgramManagementV2.screens.MainUserControl"
xmlns:we="clr-namespace:ProgramManagementV2.screens"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<Grid>
<TextBlock Height="23" HorizontalAlignment="Center" Name="textBlock1" Text="asdfasdf" VerticalAlignment="Center" />
</Grid>
</UserControl>
MainUserControl.xaml.cs:
主用户控件.xaml.cs：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.ComponentModel;
namespace ProgramManagementV2.screens
{
/// <summary>
/// Interaction logic for MainUserControl.xaml
/// </summary>
public partial class MainUserControl : AScreenUserControl
{
public MainUserControl()
{
InitializeComponent();
}
}
}
As you can see I'm adding
正如你所看到的，我正在添加
xmlns:we="clr-namespace:ProgramManagementV2.screens"
to the user control xml but I'm still getting the error:
到用户控件 xml 但我仍然收到错误：
Partial declarations of 'ProgramManagementV2.screens.MainUserControl' must not specify different base classes
“ProgramManagementV2.screens.MainUserControl”的部分声明不得指定不同的基类
Can anyone explain to me what I'm doing wrong?
谁能向我解释我做错了什么？
采纳答案by H.B.
By using <UserControl ...you claim the base-class to be UserControl, you would need to change it to
通过使用<UserControl ...您将基类声明为UserControl，您需要将其更改为
<we:AScreenUserControl x:Class="ProgramManagementV2.screens.MainUserControl" ...
However UserControlsonly allow one level of inheritance i think, at least if the AScreenUserControlhas a XAML this surely will not work.
但是UserControls，我认为只允许一级继承，至少如果AScreenUserControl有 XAML，这肯定行不通。
回答by Rhyous
Just do this:
只需这样做：
<we:AScreenUserControl x:Class="ProgramManagementV2.screens.MainUserControl"
xmlns:we="clr-namespace:ProgramManagementV2.screens"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<Grid>
<TextBlock Height="23" HorizontalAlignment="Center" Name="textBlock1" Text="asdfasdf" VerticalAlignment="Center" />
</Grid>
</we:AScreenUserControl>
