DataGridView控件使用Demo

Posted 2020-11-25 monkey6

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;
using System.Data.SqlClient;
using System.Data.Common;

namespace DataGridViewDemo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        string conStr = "server=localhost;database=db_EMS;integrated security=true";
        SqlConnection conn;
        SqlDataAdapter da;
        DataSet ds;
        private void Form1_Load(object sender, EventArgs e)
        {
            //禁止添加行
            dataGridView1.AllowUserToAddRows = false;
            //禁止刪除行
            dataGridView1.AllowUserToDeleteRows = false;
            conn = new SqlConnection(conStr);
            da = new SqlDataAdapter("select * from tb_pdic", conn);
            ds = new DataSet();
            da.Fill(ds);
            dataGridView1.DataSource = ds.Tables[0];
            //禁止對列進行排序（這個要在賦值datasource後）
            for (int i = 0; i < dataGridView1.Columns.Count; i++)
                dataGridView1.Columns[i].SortMode = DataGridViewColumnSortMode.NotSortable;
            //選中時選中整行
            dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
            //不同的行賦值不同的顏色
            foreach(DataGridViewRow dgv in dataGridView1.Rows)
            {
                if(dgv.Index%2==0)
                {
                    dataGridView1.Rows[dgv.Index].DefaultCellStyle.BackColor = Color.LightSalmon;
                }
                else
                {
                    dataGridView1.Rows[dgv.Index].DefaultCellStyle.BackColor = Color.LightPink;
                }
            }
            dataGridView1.ReadOnly = true;
            //設置選中行的顏色
            dataGridView1.DefaultCellStyle.SelectionBackColor = Color.LightSkyBlue;


            

        }

        private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            int id =(int) dataGridView1.Rows[e.RowIndex].Cells[0].Value;
            conn = new SqlConnection(conStr);
            da = new SqlDataAdapter("select * from tb_pdic where id=" + id, conn);
            ds = new DataSet();
            da.Fill(ds);
            if (ds.Tables[0].Rows.Count > 0)
            {
                textBox1.Text = ds.Tables[0].Rows[0]["name"].ToString();
                textBox2.Text = ds.Tables[0].Rows[0]["money"].ToString();
            }
        }
    }
}