Winform的控件以及DataGridView的一般使用

先上学习测试的一些截图

1：获取多个控件上面的值(checkbox,combobox,textbox,radiobutton)

2:获取到选择行的主键ID的value,方便我们进一步CURD

3:获取选择一行的数据以及一行是多少列

4：绑定显示自定义的列头名称

5：选中一行的属性设置操作

 6：全部代码

using System;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsDemo
{
    using System.Configuration;
    using System.Data;
    using System.Data.SqlClient;

    public partial class Form1 : Form
    {
        private static readonly string connectionstr = ConfigurationManager.ConnectionStrings["hydb"].ConnectionString;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            // TODO: 这行代码将数据加载到表“huayaDBDataSet.K_City”中。您可以根据需要移动或删除它。
            this.k_CityTableAdapter.Fill(this.huayaDBDataSet.K_City);
            BingDataGridview();
        }

        private void BingDataGridview()
        {
            using (SqlConnection conn = new SqlConnection(connectionstr))
            {
                conn.Open();
                using (SqlDataAdapter ad = new SqlDataAdapter("select ID,userID,userno ,Optext,Remark from F_OperateLog", conn))
                {
                    using (DataSet set = new DataSet())
                    {
                        ad.Fill(set);
                        this.dataGridView1.DataSource = set.Tables[0].DefaultView;//绑定数据
                        dataGridView1.MultiSelect = false;//单选
                        dataGridView1.Rows[1].Selected=true;//默认第二行为选中的状态
                    }
                }
            }
        }

        private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            string id = dataGridView1.CurrentRow.Cells[0].Value.ToString();
            if (!string.IsNullOrEmpty(id))
            {
                // MessageBox.Show($"获取到主键ID={id}");
                labshowid.Text = $"获取到主键ID={id}";
            }
        }
        /// <summary>
        /// 获取选中行的key ID
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void BtnSelectID_Click(object sender, EventArgs e)
        {
            string id = dataGridView1.CurrentRow.Cells[0].Value.ToString();
            MessageBox.Show($"dataGridView1.CurrentRow.Cells[0].Value.ToString={id},
下面就可以使用主键ID的值来CURD的操作");
        }
        /// <summary>
        /// 获取选中行的所有数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void BtnSelectRowData_Click(object sender, EventArgs e)
        {

            int rowIndex = dataGridView1.CurrentRow.Index;//选中当前行的索引
            int cellCount = dataGridView1.GetCellCount(DataGridViewElementStates.Selected);//获取一行的列有多少个

            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < cellCount; i++)
            {
                sb.Append(dataGridView1.CurrentRow.Cells[i].Value.ToString() + ",");
            }
            MessageBox.Show(sb.ToString().TrimEnd(',')+ ",

cellCount=" + cellCount+ ",rowIndex=" + rowIndex);
        }

        private void BtnProStart_Click(object sender, EventArgs e)
        {
            for (int i = 1; i < 100; i++)
            {
                this.progressBar1.Value = (int)(((i + 1) / 100.0) * 100);
                Application.DoEvents();
                int miao = new Random().Next(1, 10);
                System.Threading.Thread.Sleep(miao * 10);
            }
            MessageBox.Show("数据加载成功！", "请稍后", MessageBoxButtons.YesNo, MessageBoxIcon.Asterisk);
        }

        private void BtnSubmit_Click(object sender, EventArgs e)
        {
            string textboxStr = this.texboxStr.Text;
            string comboxStr = this.comboBox1.Text;
            string radiobtnStr = this.radioButton1.Checked == true ? "男" : "女";
            string textChekboxStr = string.IsNullOrEmpty(this.checkBox1.Text) == true ? "" : this.checkBox1.Text;
            string textChekboxStr2 = string.IsNullOrEmpty(this.checkBox2.Text) == true ? "" : this.checkBox2.Text;

            string msg = $"textboxStr={textboxStr},comboxStr={comboxStr},radiobtnStr={radiobtnStr},textChekboxStr={ textChekboxStr},textChekboxStr2={textChekboxStr2}";
            MessageBox.Show(msg, "结果是：");
        }
    }
}