C#不包含"DashboardTab"的定义，也没有扩展方法 [英] C# does not contain a definition for 'DashboardTab' and no extension method

问题描述

你好

我在项目中遇到此错误吗?错误:"Login_Viper_Safe.Dashboard"不包含"DashboardTab"的定义，并且找不到扩展方法"DashboardTab"接受类型为"Login_Viper_Safe.Dashboard"的第一个参数(丢失了吗? using指令还是程序集引用?)

Am I getting this error on my project? ERROR: 'Login_Viper_Safe.Dashboard' does not contain a definition for 'DashboardTab' and no extension method 'DashboardTab' accepting a first argument of type 'Login_Viper_Safe.Dashboard' could be found (are you missing a using directive or an assembly reference?)

这是我的代码:)

{
   公共局部类仪表板:表格
    {
        Public bool可见的{get;放; }
       公共仪表板()
        {
            InitializeComponent();
        }
           受保护的覆盖无效WndProc(参考消息m)
    {
        base.WndProc(ref m);
       如果(m.Msg == WM_NCHITTEST)
            m.Result =(IntPtr)(HT_CAPTION);
    }

   私有const int WM_NCHITTEST = 0x84;
   私有const int HT_CLIENT = 0x1;
   私有const int HT_CAPTION = 0x2;

   私人void b1_Click(对象发送者，EventArgs e)
    {
        this.DashboardTab.Visible = true;  (EEEOR HERE)
    }

    private void b2_Click(对象发送者，EventArgs e)
    {
     
    }

   私人空白b3_Click(对象发送者，EventArgs e)
    {
       
    }

    }
}

{
    public partial class Dashboard : Form
    {
        public bool Visible { get; set; }
        public Dashboard()
        {
            InitializeComponent();
        }
            protected override void WndProc(ref Message m)
    {
        base.WndProc(ref m);
        if (m.Msg == WM_NCHITTEST)
            m.Result = (IntPtr)(HT_CAPTION);
    }

    private const int WM_NCHITTEST = 0x84;
    private const int HT_CLIENT = 0x1;
    private const int HT_CAPTION = 0x2;

    private void b1_Click(object sender, EventArgs e)
    {
        this.DashboardTab.Visible = true;  (EEEOR HERE)
    }

    private void b2_Click(object sender, EventArgs e)
    {
     
    }

    private void b3_Click(object sender, EventArgs e)
    {
       
    }

    }
}

推荐答案

这意味着您的 Dashboard 表单不包含任何称为"DashboardTab"的控件或变量.在表单设计器"中检查控件的名称，并使用适当的名称.

It means that your Dashboard form does not contain any control or variable called "DashboardTab". Check the name of controls in Form Designer and use the appropriate name.

这篇关于C#不包含"DashboardTab"的定义，也没有扩展方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！