删除TabItem时调整TabControl的大小 [英] Resize TabControl when delete a TabItem

问题描述

大家下午好！



我的WPF应用程序遇到了下一个麻烦。



我有一个TabControl和一个转换器，我实现调整Tabitems的宽度。这工作正常。



现在，在我的应用程序中，我想要一个Button来删除其中一些TabItems，同时调整其余TabItems的大小。每当我删除其中一个包含的TabItems时，我的转换器中发生错误（以下代码上的Tabcontrol为null）。我做错了什么？





我的转换器是这样的：

Good afternoon to all!

I have the next trouble in my WPF app.

I have a TabControl and with a Converter, I achieve to resize the width of the Tabitems . This Is working fine.

Now, in my app, I want have a Button to remove some of these TabItems and at the same time resize the rest of the TabItems. Whenever I remove one of the included TabItems, an error is taking place in my converter (Tabcontrol on the code below is null). What am I doing wrong?


My converter is like this:

public class TabSizeConverterVertical : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter,
            System.Globalization.CultureInfo culture)
        {
            TabControl tabControl = values[0] as TabControl;
            double height = tabControl.ActualHeight / tabControl.Items.Count;
            //Subtract 1, otherwise we could overflow to two rows.
            return (height <= 1) ? 0 : (height);
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter,
            System.Globalization.CultureInfo culture)
        {
            throw new NotSupportedException();
        }
    }

我在为TabItem定义的样式中使用此转换器（下图）

and I use this converter in a style defined for TabItem (below)

<Setter Property="Height">
       <Setter.Value>
           <MultiBinding Converter="{StaticResource tabSizeVertical}">
               <Binding RelativeSource="{RelativeSource Mode=FindAncestor,
           AncestorType={x:Type TabControl}}" />
               <Binding RelativeSource="{RelativeSource Mode=FindAncestor,
           AncestorType={x:Type TabControl}}" Path="ActualHeight" />
           </MultiBinding>
       </Setter.Value>
   </Setter>

谢谢大家。

Thanks for all.

推荐答案

首先你做的干净的解决方案

然后运行项目它会成功



享受

first you do "clean solution"
then run the project it will successful

enjoy

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