Step 1: Click New Project, then select Visual C# on the left, then Windows and then select Windows Forms Application. Name your project "CopyRowDataGridView" and then click OK
Step 2: Design your form as below

Step 3: Create an EF Model, then select Category table from Northwind database

Step 4: Add code to handle your form as below
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 CopyRowDataGridView
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//Load data from sql database to DataGridView
using (NorthwindEntities db = new NorthwindEntities())
{
categoryBindingSource.DataSource = db.Categories.ToList();
}
}
private void btnLeft_Click(object sender, EventArgs e)
{
//Copy rows from DataGridView
for(int i = dataGridViewRight.RowCount - 1; i >= 0; i--)
{
DataGridViewRow row = dataGridViewRight.Rows[i];
if (Convert.ToBoolean(row.Cells["colRightSelected"].Value))
{
categoryBindingSource.Add((Category)row.DataBoundItem);
categoryBindingSource1.RemoveAt(row.Index);
}
}
}
private void btnRight_Click(object sender, EventArgs e)
{
//Copy rows from DataGridView
for(int i = dataGridViewLeft.RowCount - 1; i >= 0; i--)
{
DataGridViewRow row = dataGridViewLeft.Rows[i];
if (Convert.ToBoolean(row.Cells["colLeftSelected"].Value))
{
categoryBindingSource1.Add((Category)row.DataBoundItem);
categoryBindingSource.RemoveAt(row.Index);
}
}
}
}
}
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