在winforms中的tabControl中隐藏选项卡标题

Question

我试图在tabControl中隐藏标签标题，就像在此链接中显示的那样 ，但是在设计人员的代码中出现错误。 更改两条线后，我得到以下信息：

严重性代码说明项目文件行消息设计器无法在第43行处理未知名称'SelectedIndex'。方法'InitializeComponent'中的代码由设计器生成，不应手动修改。 请删除所有更改，然后尝试再次打开设计器。 c：\\ users \\ krzysztof \\ documents \\ visual studio 2015 \\ Projects \\ DaneUzytkownika3 \\ DaneUzytkownika3 \\ TabController.Designer.cs 44

严重性代码说明项目文件行错误CS1061'TabController'不包含'SelectedIndex'的定义，并且找不到扩展方法'SelectedIndex'接受类型为'TabController'的第一个参数（是否缺少using指令或程序集引用？）DaneUzytkownika3 c：\\ users \\ krzysztof \\ documents \\ visual studio 2015 \\ Projects \\ DaneUzytkownika3 \\ DaneUzytkownika3 \\ TabController.Designer.cs 43

表单的设计者代码中的第43行是：

this.tabControl1.SelectedIndex = 0;

有人可以告诉我，我该如何解决？

---

TablessTabControl.cs

namespace hiding
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.tabControl1 = new TablessTabControl();
            //this.tabControl1 = new System.Windows.Forms.TabControl();
            this.tabPage1 = new System.Windows.Forms.TabPage();
            this.tabPage2 = new System.Windows.Forms.TabPage();
            this.tabControl1.SuspendLayout();
            this.SuspendLayout();
            // 
            // tabControl1
            // 
            this.tabControl1.Controls.Add(this.tabPage1);
            this.tabControl1.Controls.Add(this.tabPage2);
            this.tabControl1.Location = new System.Drawing.Point(31, 12);
            this.tabControl1.Name = "tabControl1";
            this.tabControl1.SelectedIndex = 0;//line with the error
            this.tabControl1.Size = new System.Drawing.Size(200, 100);
            this.tabControl1.TabIndex = 0;
            // 
            // tabPage1
            // 
            this.tabPage1.Location = new System.Drawing.Point(4, 22);
            this.tabPage1.Name = "tabPage1";
            this.tabPage1.Padding = new System.Windows.Forms.Padding(3);
            this.tabPage1.Size = new System.Drawing.Size(192, 74);
            this.tabPage1.TabIndex = 0;
            this.tabPage1.Text = "tabPage1";
            this.tabPage1.UseVisualStyleBackColor = true;
            // 
            // tabPage2
            // 
            this.tabPage2.Location = new System.Drawing.Point(4, 22);
            this.tabPage2.Name = "tabPage2";
            this.tabPage2.Padding = new System.Windows.Forms.Padding(3);
            this.tabPage2.Size = new System.Drawing.Size(192, 74);
            this.tabPage2.TabIndex = 1;
            this.tabPage2.Text = "tabPage2";
            this.tabPage2.UseVisualStyleBackColor = true;
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(284, 261);
            this.Controls.Add(this.tabControl1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.tabControl1.ResumeLayout(false);
            this.ResumeLayout(false);

        }

        #endregion

        private TablessTabControl tabControl1;
        //private System.Windows.Forms.TabControl tabControl1;
        private System.Windows.Forms.TabPage tabPage1;
        private System.Windows.Forms.TabPage tabPage2;
    }
}

Form1.Designer.cs

 namespace hiding { partial class Form1 { /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// Clean up any resources being used. /// </summary> /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param> protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { this.tabControl1 = new TablessTabControl(); //this.tabControl1 = new System.Windows.Forms.TabControl(); this.tabPage1 = new System.Windows.Forms.TabPage(); this.tabPage2 = new System.Windows.Forms.TabPage(); this.tabControl1.SuspendLayout(); this.SuspendLayout(); // // tabControl1 // this.tabControl1.Controls.Add(this.tabPage1); this.tabControl1.Controls.Add(this.tabPage2); this.tabControl1.Location = new System.Drawing.Point(31, 12); this.tabControl1.Name = "tabControl1"; this.tabControl1.SelectedIndex = 0;//line with the error this.tabControl1.Size = new System.Drawing.Size(200, 100); this.tabControl1.TabIndex = 0; // // tabPage1 // this.tabPage1.Location = new System.Drawing.Point(4, 22); this.tabPage1.Name = "tabPage1"; this.tabPage1.Padding = new System.Windows.Forms.Padding(3); this.tabPage1.Size = new System.Drawing.Size(192, 74); this.tabPage1.TabIndex = 0; this.tabPage1.Text = "tabPage1"; this.tabPage1.UseVisualStyleBackColor = true; // // tabPage2 // this.tabPage2.Location = new System.Drawing.Point(4, 22); this.tabPage2.Name = "tabPage2"; this.tabPage2.Padding = new System.Windows.Forms.Padding(3); this.tabPage2.Size = new System.Drawing.Size(192, 74); this.tabPage2.TabIndex = 1; this.tabPage2.Text = "tabPage2"; this.tabPage2.UseVisualStyleBackColor = true; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(284, 261); this.Controls.Add(this.tabControl1); this.Name = "Form1"; this.Text = "Form1"; this.tabControl1.ResumeLayout(false); this.ResumeLayout(false); } #endregion private TablessTabControl tabControl1; //private System.Windows.Forms.TabControl tabControl1; private System.Windows.Forms.TabPage tabPage1; private System.Windows.Forms.TabPage tabPage2; } } 

Answer 1

我已经创建了一个项目并实现了示例中所示的选项卡控件，如下所示：

class TablessTabControl : TabControl
{
    protected override void WndProc(ref Message m)
    {
        // Hide tabs by trapping the TCM_ADJUSTRECT message
        if (m.Msg == 0x1328 && !DesignMode)
            m.Result = (IntPtr)1;
        else
            base.WndProc(ref m);
    }
}

然后，在重建项目时，我使用设计器将新的TablessTabControl添加到测试表单中。 在设计器中，我可以使用可见的标题在选项卡之间切换。

在运行时，标题将按预期消失。 我有两个标签； 我可以使用以下代码在选项卡之间进行选择：

// Selects the first tab:
tablessTabControl1.SelectedIndex = 0;

// Selects the second tab:
tablessTabControl1.SelectedIndex = 1;

---

另外，在Form1.Designer.cs ，我具有第48行，如下所示：

this.tablessTabControl1.SelectedIndex = 0;

这对我来说并不困难。

您是否尝试过关闭所有文档，清理解决方案，重建并重新打开设计器？