在winforms中的tabControl中隱藏選項卡標題

Question

我試圖在tabControl中隱藏標簽標題，就像在此鏈接中顯示的那樣 ，但是在設計人員的代碼中出現錯誤。 更改兩條線后，我得到以下信息：

嚴重性代碼說明項目文件行消息設計器無法在第43行處理未知名稱'SelectedIndex'。方法'InitializeComponent'中的代碼由設計器生成，不應手動修改。 請刪除所有更改，然后嘗試再次打開設計器。 c：\\ users \\ krzysztof \\ documents \\ visual studio 2015 \\ Projects \\ DaneUzytkownika3 \\ DaneUzytkownika3 \\ TabController.Designer.cs 44

嚴重性代碼說明項目文件行錯誤CS1061'TabController'不包含'SelectedIndex'的定義，並且找不到擴展方法'SelectedIndex'接受類型為'TabController'的第一個參數（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

表單的設計者代碼中的第43行是：

this.tabControl1.SelectedIndex = 0;

有人可以告訴我，我該如何解決？

---

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

我已經創建了一個項目並實現了示例中所示的選項卡控件，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，在重建項目時，我使用設計器將新的TablessTabControl添加到測試表單中。 在設計器中，我可以使用可見的標題在選項卡之間切換。

在運行時，標題將按預期消失。 我有兩個標簽； 我可以使用以下代碼在選項卡之間進行選擇：

// 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;

這對我來說並不困難。

您是否嘗試過關閉所有文檔，清理解決方案，重建並重新打開設計器？