你是什么意思combobox va略。你的意思是enable-diable组合框有没有项目列表。如果是这种情况，您可以使用以下代码

  public   class  ComboBoxEnableConverter：IValueConverter 
 {
 public   object 转换（ object   value ，输入targetType，对象参数，CultureInfo文化）
 {
 bool  hasItem =（ bool ） value ; 
 if （hasItem）
 return  真跨度>; 
 return   false ; 
} 
 public   object  ConvertBack（ object   value ，输入targetType， object 参数，CultureInfo文化）
 { 
 throw   new  NotImplementedException（）; 
} 
} 

然后添加到资源并绑定到启用属性，如下所示

 <   UserControl .Resources  >  
<   common：ComboBoxEnableConverter     x：Key   =  EnableConverter  /  >  
<   / UserControl.Resources  >  

<   ComboBox     x：名称  =  cmboBox    IsEnabled   =  {Binding ElementName = cmboBox，Path = HasItems，Converter = {StaticResource EnableConverter}}  /  >  

1.如果要将源值转换为目标，请定义转换器，例如，项目计数为布尔值（IsEnable on接受布尔值）

2.绑定IsEnable财产符合您的要求。在这个例子中，我想检查组合框是否在项目源中有一些项目。如果是，则Converter将返回true，否则为false

private CarType _inspectMethod;
    
    public CarType InspectMethod
    {
    
            get
            {
                return _inspectMethod;
            }
            set
            {
     
                _inspectMethod= value;
                RaisePropertyChanged();
                
             if(InspectMethod!= null)
                {                    
                    InspectTypelist = InspectMethod.InspectType;
                }
    }   

    <Label Grid.Row="0" Grid.Column="0" Content="value:" />
   <ComboBox Width="Auto" Grid.Row="4" Grid.Column="1" SelectedValuePath="Id" 
    DisplayMemberPath="Name" SelectedItem="{ Binding ElementName=LayoutRoot, 
    Path=DataContext.InspectMethod}" ItemsSource="{ Binding 
    ElementName=LayoutRoot, Path=DataContext.InspectMethodList}"/>

What I have tried:

bool _isEnable;
 public bool IsEnable

        {
            get
            {
                return this._isEnable;
            }

            set
            {
                this._isEnable = value;
            }
        }

 <ComboBox Width="Auto" Grid.Row="4" Grid.Column="1" IsEnable="Binding something here" SelectedValuePath="Id" 
    DisplayMemberPath="Name" SelectedItem="{ Binding ElementName=LayoutRoot, 
    Path=DataContext.InspectMethod}" ItemsSource="{ Binding 
    ElementName=LayoutRoot, Path=DataContext.InspectMethodList}"/>

What do you mean by combobox value. do you mean enable-diable combo box has list of items or not. If this is the case, you can use following code

public class ComboBoxEnableConverter : IValueConverter
   {
       public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
       {
           bool hasItem = (bool)value;
           if (hasItem)
               return true;
           return false;
       }
       public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
       {
           throw new NotImplementedException();
       }
   }

Then Add to Resource and bind to Enable property as given below

<UserControl.Resources>
        <common:ComboBoxEnableConverter x:Key="EnableConverter"/>
</UserControl.Resources>

<ComboBox x:Name="cmboBox" IsEnabled="{Binding ElementName=cmboBox, Path=HasItems, Converter={StaticResource EnableConverter}}"/>

1. Define converter if you want to convert source value into target e.g items count to boolean (IsEnable on accepts boolean)
2. Bind IsEnable property to your requirement. In this example I want to check if combo box has some items in item source. if yes, Converter will return true, else false