我正在尝试在运行时根据数据库表中的数据创建CheckedListBox。
表中的数据，例如
Kern
Formax
Buhrs
对于表中的每一行，我希望代码创建一个名为行的新CheckedListBox。
创建CheckedListBox后，我想从另一个包含其他数据的表中填充它。
一旦客户端完成了CheckedListBox中的数据选择，我想读取CheckedListBox中的所有已检查值并将其保存到数组中。
我的麻烦来自于创建CheckedListBox并在客户端点击完成后立即访问数据。
我非常擅长在运行时创建控件。
提前致谢：）
我已经通过创建一个checkedlistbox数组来解决这个问题，并通过在我的表中使用ammount行创建每个checkedlistbox，并使用表中的数据填充checkedlistbox。通过遍历所有pf的checkedlistbox，我获得了所有检查的值，并将它们存储到另一个表中。
private CheckedListBox[] Machines;
Machines = new CheckedListBox[test.Length];
int iLocation = 3;
for (int i = 0; i < Machines.Length; i++)
{
Machines[i] = new CheckedListBox();
Machines[i].Name = "clb" + test[i].ToString();
Machines[i].Location = new Point(iLocation, 6);
Machines[i].Size = new Size(120, 139);
iLocation += Machines[i].Width + 6;
this.Controls.Add(Machines[i]);
}
Machines[2].Items.Add("Hello");
Machines[2].Items.Add("Goodbye");
此代码用于访问选中列表框中的数据
ArrayList arrCheckedItems = new ArrayList();
CheckedListBox.CheckedItemCollection objCheckedItem = Machines[2].CheckedItems;
for (int i = 0; i < objCheckedItem.Count; i++)
{
arrCheckedItems.Add(objCheckedItem[i]);
}
string[] srtArray = arrCheckedItems.ToArray(Type.GetType("System.String")) as string[];
int iMachines = srtArray.Count();
for (int i = 0; i < iMachines; i++)
{
MessageBox.Show(srtArray[i].ToString());
}
答案 0 :(得分：0)
如果我理解正确，你有两种类型的实体......让我们称它们为T1和T2
现在您想为每个T1实体添加一个控件到表单，使您能够将T2实体与T1实体相关联，并且该控件应该是CheckedListBox ......
嗯，这是一个快速而又脏的示例表单：
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
namespace controlsAtRuntime
{
public class Form1 : Form
{
private FlowLayoutPanel mainPanel;
private Button button1;
private Button button2;
private Button button3;
MyDataClass1[] T1Items = new MyDataClass1[] { new MyDataClass1 { Name = "I am element 1" }, new MyDataClass1 { Name = "I am element 2" } };
MyDataClass2[] T2Items = new MyDataClass2[] { new MyDataClass2 { Name = "Foo" }, new MyDataClass2 { Name = "Bar" } };
public Form1()
{
InitializeComponent();
}
private void setUpControlsAtRuntime()
{
mainPanel.Controls.Clear();
foreach (var item in T1Items)
{
mainPanel.Controls.Add(getControlForT1Entity(item, T2Items));
}
}
private GroupBox getControlForT1Entity(MyDataClass1 entity,IEnumerable<MyDataClass2> asscociatableData)
{
GroupBox box = new GroupBox();//outer element that can give our checked list box a visible name
box.Text = entity.Name;
box.Tag = entity; // so you can know the entity this box belongs to ...
box.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
box.AutoSize = true;
CheckedListBox chklb = new CheckedListBox();
foreach (var item in asscociatableData)
{
chklb.Items.Add(item, entity.associatedData != null && entity.associatedData.Contains(item));
//add all items, and check them if they were contained in entity.associatedData
}
box.Controls.Add(chklb);
chklb.Location = new Point(10, 20);
return box;
}
private IEnumerable<MyDataClass2> getCheckedItemsFromOuterBox(GroupBox box)
{
var chklb = box.Controls[0] as CheckedListBox;
if (chklb != null)
{
return chklb.CheckedItems.OfType<MyDataClass2>();
}
throw new Exception("whoops... that was none of the expected GroupBox Controls...");
}
private void InitializeComponent()
{
this.mainPanel = new System.Windows.Forms.FlowLayoutPanel();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// mainPanel
//
this.mainPanel.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.mainPanel.Location = new System.Drawing.Point(12, 12);
this.mainPanel.Name = "mainPanel";
this.mainPanel.Size = new System.Drawing.Size(417, 269);
this.mainPanel.TabIndex = 0;
//
// button1
//
this.button1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.button1.Location = new System.Drawing.Point(330, 287);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(99, 23);
this.button1.TabIndex = 0;
this.button1.Text = "save selection";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(12, 287);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(75, 23);
this.button2.TabIndex = 1;
this.button2.Text = "clear panel";
this.button2.UseVisualStyleBackColor = true;
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(93, 287);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(75, 23);
this.button3.TabIndex = 2;
this.button3.Text = "setup panel";
this.button3.UseVisualStyleBackColor = true;
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// Form1
//
this.ClientSize = new System.Drawing.Size(441, 322);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.mainPanel);
this.Name = "Form1";
this.ResumeLayout(false);
}
private void button1_Click(object sender, EventArgs e)
{
foreach (var item in mainPanel.Controls.OfType<GroupBox>().Where(x=>x.Tag is MyDataClass1))
{
var entity = item.Tag as MyDataClass1;
entity.associatedData = getCheckedItemsFromOuterBox(item);
}
}
private void button2_Click(object sender, EventArgs e)
{
mainPanel.Controls.Clear();
}
private void button3_Click(object sender, EventArgs e)
{
setUpControlsAtRuntime();
}
}
public class MyDataClass1
{
public String Name { get; set; }
public IEnumerable<MyDataClass2> associatedData { get; set; }
}
public class MyDataClass2
{
public String Name { get; set; }
public override string ToString()
{
return Name;
}
}
}