需要有关自定义消息框抛出处理错误的帮助 [英] Need help with a Custom message box throwing disposal error

问题描述

我正在尝试使用不同的主题制作我自己的自定义消息框，但当我尝试强制显示更多的框时，它会抛出一个错误



System.Windows.Forms.dll中出现未处理的System.ObjectDisposedException类型异常



如果有人知道如何解决我的问题，将不胜感激





课程代码

i am trying to make my own custom message boxes using a different theme but when i try to force the box to show up more then once it throws a error

An unhandled exception of type 'System.ObjectDisposedException' occurred in System.Windows.Forms.dll

it would be greatly appreciated if any one knows how to fix my issue


The classes code

namespace Zeron
{
    public class Message
    {
        
        public enum Type
        {
            Error,
            Info,
            Warning
        }
        public void Show(String Text, Type Type)
        {
            Message_Form msg = new Message_Form();
            msg.sTitle = Type.ToString();
            msg.sText = Text;
            switch (Type)
            {
                case Type.Error:
                    msg.Style = MetroColorStyle.Red;
                break;
                case Type.Info:
                    msg.Style = MetroColorStyle.Blue;
                break;
                case Type.Warning:
                    msg.Style = MetroColorStyle.Yellow;
                break;
                default:
                    msg.Style = MetroColorStyle.Silver;
                break;
            }
            msg.Show();
        }
        public void ShowDialog(String Text, Type Type)
        {
            Message_Form msg = new Message_Form();
            msg.sTitle = Type.ToString();
            msg.sText = Text;
            switch (Type)
            {
                case Type.Error:
                    msg.Style = MetroColorStyle.Red;
                    break;
                case Type.Info:
                    msg.Style = MetroColorStyle.Blue;
                    break;
                case Type.Warning:
                    msg.Style = MetroColorStyle.Yellow;
                    break;
                default:
                    msg.Style = MetroColorStyle.Silver;
                    break;
            }
            msg.ShowDialog();
        }
    }
}

表格中的代码

Code from the form

namespace Zeron
{
    public partial class Message_Form : MetroForm 
    {
        public Message_Form()
        {
            InitializeComponent();
        }
        public string sTitle { set { this.Text = value; } }
        public string sText { set { rtb_Text.Text = value; } }
        private void Message_Form_FormClosing(object sender, FormClosingEventArgs e)
        {
            this.Text = "Title";
            rtb_Text.Text = "Text";
            this.Style = MetroColorStyle.Silver;
            this.Theme = MetroThemeStyle.Light;
        }
        
    }
}

推荐答案

当您使用<显示表单时code>显示然后关闭，它会被处理掉，所以你不能再打开它。避免它。使用以下方法之一：

• 从不使用显示，仅使用 ShowDialog ，然后它会按你的意愿工作：你可以多次显示它，重复使用表格。
• 如果你需要使用显示，在尝试用户关闭时隐藏它，而不是关闭;为此，重写虚方法 System.Windows.Forms.Form.OnFormClosing 。根据事件参数中传递的 CloseReason （如果这是 CloseReason.UserClosing ），设置取消为true并隐藏表单：
  
  http://msdn.microsoft.com/en-us/library/system.windows.forms.form.onformclosing%28v=vs.110%29。 aspx [ ^ ]，
  
  http://msdn.microsoft.com/en-us/library/system.windows.forms.formclosingeventargs%28v=vs.110%29.aspx [ ^ ]，
  
  http://msdn.microsoft.com/en-us/library/system.windows.forms.formclosingeventargs.closereason%28v=vs。 110％29.aspx [ ^ ]，
  
  http://msdn.microsoft.com/en-us/library/system.windows.forms.closereason%28v=vs.110%29。 aspx [ ^ ]。
  
  
  
  它将允许您再次显示表单，因为它不会被处理。此外，表单将在节目之间保留其状态。
• 不要重复使用显示显示的表单，而是创建表单的新实例每次。

When you show a form with Show and then close, it gets disposed, so you cannot open it again. Just avoid it. Use one of these approaches:

• Never use Show, only use ShowDialog, then it will work as you want: you will be able to show it multiple times, reusing the form.
• If you need to use Show, hide it on attempt to close by the user, instead of closing; to do so, override the virtual method System.Windows.Forms.Form.OnFormClosing. Depending on CloseReason passed in the event arguments (if this is CloseReason.UserClosing), set Cancel to true and hide the form instead:
  http://msdn.microsoft.com/en-us/library/system.windows.forms.form.onformclosing%28v=vs.110%29.aspx[^],
  http://msdn.microsoft.com/en-us/library/system.windows.forms.formclosingeventargs%28v=vs.110%29.aspx[^],
  http://msdn.microsoft.com/en-us/library/system.windows.forms.formclosingeventargs.closereason%28v=vs.110%29.aspx[^],
  http://msdn.microsoft.com/en-us/library/system.windows.forms.closereason%28v=vs.110%29.aspx[^].
  
  It will allow you to show the form again, as it won't be disposed. Besides, the form will preserve its states between shows.
• Don't reuse the form shown via Show, instead, create a new instance of the form each time.

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