【C#语言】DataGridView删除行

        在实际项目中，有时需要将数据表中的数据删除，因此需要使用DataGridView控件中删除行的功能。

        控件：

 ContextMenuStrip.

        方法：

指定的屏幕位置定位 

 public void Show(Point screenLocation);

指定的控件位置定位

 public void Show(Control control, Point position);

        控件：

DataGridView.

        方法：

 从集合中移除指定位置处的行。

 public virtual void RemoveAt(int index);

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
 
namespace Test_DataGridView
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        //全局变量
        int rowIndex;
 
 
        private void Form1_Load(object sender, EventArgs e)
        {
            dataGridView1.DataSource = Source();
        }
 
        //数据表资源
        private DataTable Source()
        {
            DataTable mydt = new DataTable();
            mydt.Columns.Add("姓名");
            mydt.Columns.Add("年龄");
            mydt.Columns.Add("分数");
            String[,] str = new String[,] { { "张三", "21", "90" }, { "李四", "22", "93" }, { "王五", "23", "99" } };
 
            for (int i = 0; i < 3; i++)
            {
                DataRow dr = mydt.NewRow();
                dr[0] = str[i, 0];
                dr[1] = str[i, 1];
                dr[2] = str[i, 2];
                mydt.Rows.Add(dr);
            }
            return mydt;
 
        }
 
        //获取单元格信息
        private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            //获取单元格坐标
            int col = dataGridView1.CurrentCellAddress.X + 1;
            int row = dataGridView1.CurrentCellAddress.Y + 1;
 
            //获取单元格内容
            String content = dataGridView1.CurrentCell.Value.ToString();
 
            MessageBox.Show("行：" + row.ToString() + "   列：" + col.ToString() + "      内容：" + content);
 
        }
 
        //隐藏年龄
        private void button1_Click(object sender, EventArgs e)
        {
            String bts = button1.Text;
            if (bts == "隐藏年龄")
            {
                dataGridView1.Columns[1].Visible = false;
                bts = "显示年龄";
                button1.Text = bts;
            }
            else
            {
                dataGridView1.Columns[1].Visible = true;
                bts = "隐藏年龄";
                button1.Text = bts;
            }
 
        }
 
        //右键点击事件
        private void dataGridView1_CellMouseUp(object sender, DataGridViewCellMouseEventArgs e)
        {
            if (e.Button == MouseButtons.Right)
            {
                this.dataGridView1.Rows[e.RowIndex].Selected = true;
                this.dataGridView1.CurrentCell = this.dataGridView1.Rows[e.RowIndex].Cells[0];
                this.contextMenuStrip1.Show(this.dataGridView1, e.Location);
                contextMenuStrip1.Show(Cursor.Position);
                rowIndex = e.RowIndex;
 
            }
 
        }
 
        //删除行事件的内容
        private void 删除行ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (!this.dataGridView1.Rows[this.rowIndex].IsNewRow)
            {
                this.dataGridView1.Rows.RemoveAt(rowIndex);
            }
 
        }
 
 
    }
}