c＃ - テキストボックスのないDataGridviewから新しいデータを挿入

Question

この更新コードを変更して、mysqlにinsertコマンドを実行することはできますか？もしあれば、何か助けてもらえますか？ DataGridViewの空行を使用して新しいデータを挿入する予定です。

private void updateTable(object sender, DataGridViewCellEventArgs e) 
{ 
    DataTable changes = ((DataTable)dataGridView1.DataSource).GetChanges(); 

    if (changes != null) 
    { 
     MySqlCommandBuilder mcb = new MySqlCommandBuilder(mySqlDataAdapter); 
     mySqlDataAdapter.UpdateCommand = mcb.GetUpdateCommand(); 
     mySqlDataAdapter.Update(changes); 
     ((DataTable)dataGridView1.DataSource).AcceptChanges(); 
    } 
} 

Answer 1

私はこれを持っていますが、これにはテキストボックスが必要です。

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

namespace PointOfSale 
{ 
    public partial class Users : Form 
    { 
     MySqlCommand cmd; 
     MySqlDataAdapter adapt; 
     int ID = 0; 
     private string conn; 
     private MySqlConnection connect; 

     public Users() 
     { 
      InitializeComponent(); 
      DisplayData(); 
     } 

     private void db_connection() 
     { 
      try 
      { 
       conn = "Server=localhost;Database=phvpos;Uid=root;Pwd=;"; 
       connect = new MySqlConnection(conn); 
       connect.Open(); 
      } 
      catch (MySqlException e) 
      { 
       throw; 
      } 
     } 

     //Insert Data 
     private void btnInsert_Click(object sender, EventArgs e) 
     { 

      if (txtName.Text != "" && txtPassword.Text != "" && txtUsertype.Text != "") 
      { 
       db_connection(); 

       cmd = new MySqlCommand("insert into accounts(username, password, usertype) values(@name,@password,@usertype)", connect); 
       cmd.Parameters.AddWithValue("@name", txtName.Text); 
       cmd.Parameters.AddWithValue("@password", txtPassword.Text); 
       cmd.Parameters.AddWithValue("@usertype", txtUsertype.Text); 
       cmd.ExecuteNonQuery(); 
       connect.Close(); 
       MessageBox.Show("Record Inserted Successfully"); 
       DisplayData(); 
       ClearData(); 
      } 
      else 
      { 
       MessageBox.Show("Please Provide Details!"); 
      } 
     } 
     //Display Data in DataGridView 
     private void DisplayData() 
     { 
      db_connection(); 
      DataTable dt = new DataTable(); 
      adapt = new MySqlDataAdapter("select * from accounts", connect); 
      adapt.Fill(dt); 
      dataGridView1.DataSource = dt; 
      connect.Close(); 
     } 
     //Clear Data 
     private void ClearData() 
     { 
      txtName.Text = ""; 
      txtPassword.Text = ""; 
      ID = 0; 
     } 
     //dataGridView1 RowHeaderMouseClick Event 
     private void dataGridView1_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e) 
     { 
      ID = Convert.ToInt32(dataGridView1.Rows[e.RowIndex].Cells[0].Value.ToString()); 
      txtName.Text = dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString(); 
      txtPassword.Text = dataGridView1.Rows[e.RowIndex].Cells[2].Value.ToString(); 
      txtUsertype.Text = dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString(); 
     } 
     //Update Record 
     private void btnUpdate_Click(object sender, EventArgs e) 
     { 
      db_connection(); 
      if (txtName.Text != "" && txtPassword.Text != "" && txtUsertype.Text != "") 
      { 
       cmd = new MySqlCommand("update accounts set username=@name,password=@password,usertype=@usertype where userid=@userid", connect); 
       cmd.Parameters.AddWithValue("@userid", ID); 
       cmd.Parameters.AddWithValue("@name", txtName.Text); 
       cmd.Parameters.AddWithValue("@password", txtPassword.Text); 
       cmd.Parameters.AddWithValue("@usertype", txtUsertype.Text); 
       cmd.ExecuteNonQuery(); 
       MessageBox.Show("Record Updated Successfully"); 
       connect.Close(); 
       DisplayData(); 
       ClearData(); 
      } 
      else 
      { 
       MessageBox.Show("Please Select Record to Update");