如何在tabcontrol中查找选项卡以使用c#windows应用程序将其关闭
我已经从代码中粘贴了两个函数。它们用于在tabcontrol中添加选项卡和删除tabcontrol中的选项卡。这两个函数位于tabcontrol所在的同一表单中 我能够轻松地在tabcontrol中添加选项卡。我正在从另一个类调用AddTab()。而且它工作得很好 我正试图做同样的事情,从另一个类中删除选项卡。但是tabpage tp总是返回null,即使我的tabcontrol中还有两个选项卡 我错过了什么如何在tabcontrol中查找选项卡以使用c#windows应用程序将其关闭,c#,winforms,C#,Winforms,我已经从代码中粘贴了两个函数。它们用于在tabcontrol中添加选项卡和删除tabcontrol中的选项卡。这两个函数位于tabcontrol所在的同一表单中 我能够轻松地在tabcontrol中添加选项卡。我正在从另一个类调用AddTab()。而且它工作得很好 我正试图做同样的事情,从另一个类中删除选项卡。但是tabpage tp总是返回null,即使我的tabcontrol中还有两个选项卡 我错过了什么 public void AddTab(string strProcessNam
public void AddTab(string strProcessName)
{
try
{
Global.ExistingTabProcessNames.Add(strProcessName);
this.Show();
//this below line dosent makes duplicate tabs.
TabPage tp = new TabPage();
tp.Text = strProcessName;
tp.Name = strProcessName;
tabControl1.TabPages.Add(tp);
//Activate the newly created Tabpage.
tabControl1.SelectedTab = tp;
tabControl1.ItemSize = new Size(200, 32);
tp.Height = tp.Parent.Height;
tp.Width = tp.Parent.Width;
}
catch (Exception ex)
{
}
}
public void RemoveUnusedTabs(string strTabToRemove)
{
TabPage tp = tabControl1.TabPages[strTabToRemove];
tp.Controls.Remove(this);
tabControl1.TabPages.Remove(tp);
}
我正在从另一个类调用RemoveUnusedTabs,如下所示
//为该类创建一个实例。
任务栏移除abs=新任务栏();
移除选项卡。移除未使用的选项卡(strTabtoRemove) 我建议看一下选项卡页面示例,以添加/删除选项卡 下面是一个简单的例子: Form1.cs文件:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace TabPageExample
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void mAddTabButton_Click(object sender, EventArgs e)
{
TabPage new_tab_page = new TabPage();
if (!mTabNameTextBox.Text.Equals(""))
{
new_tab_page.Text = mTabNameTextBox.Text;
new_tab_page.Name = mTabNameTextBox.Text;
mTabControl.TabPages.Add(new_tab_page);
mTabNameTextBox.Text = "";
}
}
private void mRemoveTabButton_Click(object sender, EventArgs e)
{
if (mTabControl.TabPages.Count > 0)
{
TabPage tab_page = mTabControl.TabPages[mTabNameTextBox.Text];
if (tab_page != null)
{
mTabControl.TabPages.Remove(tab_page);
}
}
mTabNameTextBox.Text = "";
}
}
}
这是Form1.Designer.cs
namespace TabPageExample
{
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.mTabControl = new System.Windows.Forms.TabControl();
this.mAddTabButton = new System.Windows.Forms.Button();
this.mRemoveTabButton = new System.Windows.Forms.Button();
this.mTabNameTextBox = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// mTabControl
//
this.mTabControl.Location = new System.Drawing.Point(12, 12);
this.mTabControl.Name = "mTabControl";
this.mTabControl.SelectedIndex = 0;
this.mTabControl.Size = new System.Drawing.Size(499, 379);
this.mTabControl.TabIndex = 0;
//
// mAddTabButton
//
this.mAddTabButton.Location = new System.Drawing.Point(162, 408);
this.mAddTabButton.Name = "mAddTabButton";
this.mAddTabButton.Size = new System.Drawing.Size(75, 23);
this.mAddTabButton.TabIndex = 1;
this.mAddTabButton.Text = "Add Tab";
this.mAddTabButton.UseVisualStyleBackColor = true;
this.mAddTabButton.Click += new System.EventHandler(this.mAddTabButton_Click);
//
// mRemoveTabButton
//
this.mRemoveTabButton.Location = new System.Drawing.Point(243, 408);
this.mRemoveTabButton.Name = "mRemoveTabButton";
this.mRemoveTabButton.Size = new System.Drawing.Size(75, 23);
this.mRemoveTabButton.TabIndex = 2;
this.mRemoveTabButton.Text = "Remove Tab";
this.mRemoveTabButton.UseVisualStyleBackColor = true;
this.mRemoveTabButton.Click += new System.EventHandler(this.mRemoveTabButton_Click);
//
// mTabNameTextBox
//
this.mTabNameTextBox.Location = new System.Drawing.Point(194, 444);
this.mTabNameTextBox.Name = "mTabNameTextBox";
this.mTabNameTextBox.Size = new System.Drawing.Size(100, 20);
this.mTabNameTextBox.TabIndex = 3;
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(30, 447);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(158, 13);
this.label1.TabIndex = 4;
this.label1.Text = "Enter tab name to Add/Remove";
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(523, 476);
this.Controls.Add(this.label1);
this.Controls.Add(this.mTabNameTextBox);
this.Controls.Add(this.mRemoveTabButton);
this.Controls.Add(this.mAddTabButton);
this.Controls.Add(this.mTabControl);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.TabControl mTabControl;
private System.Windows.Forms.Button mAddTabButton;
private System.Windows.Forms.Button mRemoveTabButton;
private System.Windows.Forms.TextBox mTabNameTextBox;
private System.Windows.Forms.Label label1;
}
}
名称空间选项卡页示例
{
部分类Form1
{
///
///必需的设计器变量。
///
private System.ComponentModel.IContainer components=null;
///
///清理所有正在使用的资源。
///
///如果应释放托管资源,则为true;否则为false。
受保护的覆盖无效处置(布尔处置)
{
if(处理和(组件!=null))
{
组件。Dispose();
}
基地。处置(处置);
}
#区域Windows窗体设计器生成的代码
///
///设计器支持所需的方法-不修改
///此方法的内容与代码编辑器一起使用。
///
私有void InitializeComponent()
{
this.mTabControl=new System.Windows.Forms.TabControl();
this.maddtabutton=new System.Windows.Forms.Button();
this.mremovetabutton=new System.Windows.Forms.Button();
this.mTabNameTextBox=new System.Windows.Forms.TextBox();
this.label1=new System.Windows.Forms.Label();
这个.SuspendLayout();
//
//MTABC控制
//
this.mTabControl.Location=新系统.Drawing.Point(12,12);
this.mTabControl.Name=“mTabControl”;
this.mTabControl.SelectedIndex=0;
this.mTabControl.Size=新系统.Drawing.Size(499379);
this.mTabControl.TabIndex=0;
//
//马德塔布顿
//
this.maddtabutton.Location=新系统图点(162408);
this.maddtabutton.Name=“maddtabutton”;
this.maddtabutton.Size=新系统.Drawing.Size(75,23);
this.maddtabutton.TabIndex=1;
this.maddtabutton.Text=“添加选项卡”;
this.maddtabutton.UseVisualStyleBackColor=true;
this.maddtabutton.Click+=newsystem.EventHandler(this.maddtabutton\u Click);
//
//埃莫维塔布顿先生
//
this.mremovetabutton.Location=新系统.图纸.点(243408);
this.mremovetabutton.Name=“mremovetabutton”;
this.mremovetabutton.Size=新系统.Drawing.Size(75,23);
this.mremovetabutton.TabIndex=2;
this.mremovetabutton.Text=“删除选项卡”;
this.mremovetabutton.UseVisualStyleBackColor=true;
this.mremovetabutton.Click+=newsystem.EventHandler(this.mremovetabutton\u Click);
//
//mTabNameTextBox
//
this.mTabNameTextBox.Location=新系统.Drawing.Point(194444);
this.mTabNameTextBox.Name=“mTabNameTextBox”;
this.mTabNameTextBox.Size=新系统.Drawing.Size(100,20);
this.mTabNameTextBox.TabIndex=3;
//
//标签1
//
this.label1.AutoSize=true;
this.label1.Location=新系统图纸点(30447);
this.label1.Name=“label1”;
this.label1.Size=新系统图纸尺寸(158,13);
this.label1.TabIndex=4;
this.label1.Text=“输入要添加/删除的选项卡名称”;
//
//表格1
//
此.AutoScaleDimensions=新系统.Drawing.SizeF(6F,13F);
this.AutoScaleMode=System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize=新系统图尺寸(523476);
this.Controls.Add(this.label1);
this.Controls.Add(this.mTabNameTextBox);
this.Controls.Add(this.mremovetabutton);
this.Controls.Add(this.maddtabutton);
this.Controls.Add(this.mTabControl);
this.Name=“Form1”;
this.Text=“Form1”;
此选项为.resume布局(false);
这个。执行布局();
}
#端区
private System.Windows.Forms.TabControl mTabControl;
private System.Windows.Forms.Button mAddTabButton;
private System.Windows.Forms.Button mRemoveTabButton;
private System.Windows.Forms.TextBox mTabNameTextBox;
private System.Windows.Forms.label1;
}
}
tp.Controls.Remove(此)的意图是什么;在RemoveUnusedTabs()中?您还可以发布调用RemoveUnusedTabs()的代码,并添加调用该函数的代码。只是为类创建一个实例并调用函数。就这样??有什么问题吗??这也是我执行add函数的方式。@Frank Bollack,无论如何,tabpage tp在第一行本身返回NULL。@…tabpage tp=tabControl1.TabPages[strTabToRemove];