有没有一种简单的方法可以在 WinForms 中实现选中的组合框 [英] Is there a simple way to implement a Checked Combobox in WinForms

问题描述

有人知道 WinForms 中选中的组合框的简单实现吗?我在谷歌搜索时找不到任何东西.

Does anyone know of a simple implementation of a checked combobox in WinForms? I haven't been able to find anything when googling.

我想要一些行为类似于此 Windows 计划任务触发器编辑的内容:

I want something that behaves like this windows scheduled task trigger edit:

推荐答案

这就是你想要的，这是我自己编写的
这个概念非常简单，使用面板并在其上添加复选框.然后强制组合框禁用它的下拉菜单，但您仍然可以单击其向下箭头.使用组合框的 DropDown 和 DropDownClosed 事件.当您将组合框的列表向下设置面板的 Visible 属性为 True 时，当您关闭组合框的下拉列表时将其隐藏.

Here is what you want, I just coded this by myself
The concept is really simple, use a panel and add checkboxes onto it. Then force the combo box to disable it's drop down menu but still you can click on its down arrow. Use DropDown and DropDownClosed events of the combo box. When you make the combo box's list down set panel's Visible property to True, hide it when you close the drop down of the combo box.

//designer class

// 
// comboBox1
// 
this.comboBox1.DrawMode = System.Windows.Forms.DrawMode.OwnerDrawFixed;
this.comboBox1.DropDownHeight = 1;
this.comboBox1.DropDownWidth = 1;
this.comboBox1.FormattingEnabled = true;
this.comboBox1.IntegralHeight = false;
this.comboBox1.Location = new System.Drawing.Point(256, 371);
this.comboBox1.Name = "comboBox1";
this.comboBox1.Size = new System.Drawing.Size(238, 21);
this.comboBox1.TabIndex = 5;
this.comboBox1.DropDown += new System.EventHandler(this.comboBox1_DropDown);
this.comboBox1.DropDownClosed += new System.EventHandler(this.comboBox1_DropDownClosed);
// 
// panel1
// 
this.panel1.BackColor = System.Drawing.Color.White;
this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.panel1.Controls.Add(this.checkBox9);
this.panel1.Controls.Add(this.checkBox8);
this.panel1.Controls.Add(this.checkBox7);
this.panel1.Controls.Add(this.checkBox6);
this.panel1.Controls.Add(this.checkBox5);
this.panel1.Controls.Add(this.checkBox4);
this.panel1.Controls.Add(this.checkBox3);
this.panel1.Controls.Add(this.checkBox2);
this.panel1.Controls.Add(this.checkBox1);
this.panel1.Location = new System.Drawing.Point(252, 394);
this.panel1.Name = "panel1";
this.panel1.Size = new System.Drawing.Size(245, 68);
this.panel1.TabIndex = 6;
// 
// checkBox9
// 
this.checkBox9.AutoSize = true;
this.checkBox9.Location = new System.Drawing.Point(162, 48);
this.checkBox9.Name = "checkBox9";
this.checkBox9.Size = new System.Drawing.Size(80, 17);
this.checkBox9.TabIndex = 9;
this.checkBox9.Text = "checkBox9";
this.checkBox9.UseVisualStyleBackColor = true;
// 
// checkBox8
// 
this.checkBox8.AutoSize = true;
this.checkBox8.Location = new System.Drawing.Point(162, 27);
this.checkBox8.Name = "checkBox8";
this.checkBox8.Size = new System.Drawing.Size(80, 17);
this.checkBox8.TabIndex = 8;
this.checkBox8.Text = "checkBox8";
this.checkBox8.UseVisualStyleBackColor = true;
// 
// checkBox7
// 
this.checkBox7.AutoSize = true;
this.checkBox7.Location = new System.Drawing.Point(162, 4);
this.checkBox7.Name = "checkBox7";
this.checkBox7.Size = new System.Drawing.Size(80, 17);
this.checkBox7.TabIndex = 7;
this.checkBox7.Text = "checkBox7";
this.checkBox7.UseVisualStyleBackColor = true;
// 
// checkBox6
// 
this.checkBox6.AutoSize = true;
this.checkBox6.Location = new System.Drawing.Point(82, 47);
this.checkBox6.Name = "checkBox6";
this.checkBox6.Size = new System.Drawing.Size(80, 17);
this.checkBox6.TabIndex = 5;
this.checkBox6.Text = "checkBox6";
this.checkBox6.UseVisualStyleBackColor = true;
// 
// checkBox5
// 
this.checkBox5.AutoSize = true;
this.checkBox5.Location = new System.Drawing.Point(82, 26);
this.checkBox5.Name = "checkBox5";
this.checkBox5.Size = new System.Drawing.Size(80, 17);
this.checkBox5.TabIndex = 4;
this.checkBox5.Text = "checkBox5";
this.checkBox5.UseVisualStyleBackColor = true;
// 
// checkBox4
// 
this.checkBox4.AutoSize = true;
this.checkBox4.Location = new System.Drawing.Point(82, 4);
this.checkBox4.Name = "checkBox4";
this.checkBox4.Size = new System.Drawing.Size(80, 17);
this.checkBox4.TabIndex = 3;
this.checkBox4.Text = "checkBox4";
this.checkBox4.UseVisualStyleBackColor = true;
// 
// checkBox3
// 
this.checkBox3.AutoSize = true;
this.checkBox3.Location = new System.Drawing.Point(3, 47);
this.checkBox3.Name = "checkBox3";
this.checkBox3.Size = new System.Drawing.Size(80, 17);
this.checkBox3.TabIndex = 2;
this.checkBox3.Text = "checkBox3";
this.checkBox3.UseVisualStyleBackColor = true;
// 
// checkBox2
// 
this.checkBox2.AutoSize = true;
this.checkBox2.Location = new System.Drawing.Point(4, 24);
this.checkBox2.Name = "checkBox2";
this.checkBox2.Size = new System.Drawing.Size(80, 17);
this.checkBox2.TabIndex = 1;
this.checkBox2.Text = "checkBox2";
this.checkBox2.UseVisualStyleBackColor = true;
// 
// checkBox1
// 
this.checkBox1.AutoSize = true;
this.checkBox1.Location = new System.Drawing.Point(4, 4);
this.checkBox1.Name = "checkBox1";
this.checkBox1.Size = new System.Drawing.Size(80, 17);
this.checkBox1.TabIndex = 0;
this.checkBox1.Text = "checkBox1";
this.checkBox1.UseVisualStyleBackColor = true;

<小时>

public Form1()
{
    InitializeComponent();
    panel1.Visible =false;
}


private void comboBox1_DropDown(object sender, EventArgs e)
{
    panel1.Visible = true;
}

private void comboBox1_DropDownClosed(object sender, EventArgs e)
{
    panel1.Visible = false;
}

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