禁用调度程序控件上的箭头键答案

【问题标题】：disable arrow key on scheduler control禁用调度程序控件上的箭头键
【发布时间】：2016-10-13 10:49:32
【问题描述】：

有没有办法禁用左右方向键？因为我不希望用户看到10 october 之前的日期和16 october 之后的日期

我试过这个代码

       private void schedulerControl1_KeyDown(object sender, KeyEventArgs e)
    {
        if(e.KeyCode == Keys.Right)
        {

            e.Handled = true;
        }
    }

它仍然可以单击箭头键，并且我检查了schedulercontrol 属性没有keypreview。或者可能为用户无法单击或关注单元格设置禁用

n.b : iam 使用 devexpress 和组件 scheduler

【问题讨论】：

标签： c# winforms devexpress

【解决方案1】：

您可以使用 IKeyboardHandlerService。

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        IKeyboardHandlerService oldKeyboardHandler = (IKeyboardHandlerService)schedulerControl1.GetService(typeof(IKeyboardHandlerService));
        if (oldKeyboardHandler != null)
        {
            MyKeyboardHandlerService newKeyboardHandler = new MyKeyboardHandlerService(schedulerControl1, oldKeyboardHandler);
            schedulerControl1.RemoveService(typeof(IKeyboardHandlerService));
            schedulerControl1.AddService(typeof(IKeyboardHandlerService), newKeyboardHandler);
        }
    }
}

public class MyKeyboardHandlerService : KeyboardHandlerServiceWrapper
{
    IServiceProvider provider;

    public MyKeyboardHandlerService(IServiceProvider provider, IKeyboardHandlerService service)
        : base(service)
    {
        this.provider = provider;
    }

    public override void OnKeyDown(KeyEventArgs e)
    {
        if (!(e.KeyCode == Keys.Left|| e.KeyCode == Keys.Right))
                        base.OnKeyDown(e);
    }
}

【讨论】：

【解决方案2】：

参考这些可能与您的要求和控件的SchedulerControl.LimitInterval Property 相似的 DevExpress 线程：

Restrict TimelineView to show only selected date range
Scheduler: Limit days/hours displayed in Gantt-view
Restricting Date Range in Schedule Control, TimeScale view
Limit timeline view to specified interval (1 day?)
Timeline view : how to adjust the number of visible days

【讨论】：