C# 动态创建Label和ComboBox控件并修改Text

news2025/1/21 5:15:58

背景：在做项目的时候可能需要根据一定数量创建某些控件并修改其属性，本文以控件label、ConboBox控件进行动态创建。

程序运行前后的的Form动态图

代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace C__动态创建label和combobox控件
{
    public partial class Form1 : Form
    {
        private List<KeyValuePair<Label, ComboBox>> dynamicControls;
        public Form1()
        {
            dynamicControls = new List<KeyValuePair<Label, ComboBox>>();
            InitializeComponent();
            CreateDynamicControls();
        }

        private void CreateDynamicControls()
        {
            for(int i=0;i<6;i++)
            {
                Label label = new Label();
                label.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
                label.Text = $"相机{i + 1}";
                label.Location = new System.Drawing.Point(50, 10 + i * 30);

                ComboBox comboBox = new ComboBox();
                comboBox.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point);
                comboBox.Items.AddRange(new object[] { "Option 1", "Option2", "Option3" });
                comboBox.DropDownStyle = ComboBoxStyle.DropDownList;
                comboBox.Location = new System.Drawing.Point(150, 10 + i * 30);
                comboBox.Width = 500;

                this.Controls.Add(label);
                this.Controls.Add(comboBox);

                dynamicControls.Add(new KeyValuePair<Label, ComboBox>(label, comboBox));
            }
        }
        //保存动态控件的文本信息
        private void SaveDynamicControlText()
        {
            foreach (var pair in dynamicControls)
            {
                Console.WriteLine($"Label:{pair.Key.Text},ComboBox:{pair.Value.SelectedItem}");
            }
        }
    }
}