数据绑定自定义控件

Question

我有一个自定义控件(Windows窗体),它是一个查找文本框.Control上的属性是Current Selection,它是包含"Identifier","Code"和"Description"的自定义对象.此属性是使用BindingSource的Databound.

显示信息非常有效.另一方面,无论我将Update设置为OnValidate还是OnValueChange,它都不会更新BindingSource.是否有一些我不想让它自动更新？

private System.Windows.Forms.BindingSource buildPlanComponentDataBindingSource;

    public void LoadBuildPlan(string itemNumber)
    {
        var buildPlanComponents = BuildPlan.LoadBuildPlanComponents(itemNumber, AutomaticPrice);
        buildPlanComponentDataBindingSource.DataSource = buildPlanComponents;
        AssemblyNumber = itemNumber;
    }




[Bindable(true)]
[DefaultValue(null)]
public ILookupSelection CurrentSelection
{
    get
    {
        if (currentSelection == null)
            currentSelection = new LookupSelection {Code = txtLookup.Text};

        return currentSelection;
    }

    set
    {
        if (value == null) return;

        currentSelection = value;

        SetText(currentSelection, DisplayText);
        SetDescription(currentSelection, DisplayDescription);
    }
}

Answer 1

实施 INotifyPropertyChanged 似乎是解决方案！

    #region IPropertyChanged

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged(string propertyName)
    {
        OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
    }

    protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
    {
        if (null != PropertyChanged)
        {
            PropertyChanged(this, e);
        }
    }

    #endregion