一次将datagridview的一些数据插入Access数据库

Question

我是 C# 新手，我想在 Access 中插入一些 Datagridview 列，以便之后检索这些数据。

private void metroButton5_Click(object sender, EventArgs e)
try
{
    OleDbConnection connection = new OleDbConnection(@"Provider = Microsoft.ACE.OLEDB.12.0; Data Source = F:\Database\DBAdatabase.accdb; Persist Security Info = False; ");
    for (int s = 0; s < dataGridView1.Rows.Count - 1; s++)

    {
        OleDbCommand command = new OleDbCommand(@"INSERT INTO Quotations (Position, LVPosition)VALUES('"+dataGridView1.Rows[s].Cells[0].Value+"','"+dataGridView1.Rows[s].Cells[1].Value+"')", connection);

        connection.Open();

        command.Connection = connection;
        command.ExecuteNonQuery();
        MessageBox.Show("Data Saved");

        connection.Close();
    }
}

catch (Exception ex)
{
    MessageBox.Show("Error   " + ex);
}

我变成了 Error Systen.Data.OleDb.OleDbException (0x80040E14): Syntaxerror in the Insert Into。

谁能帮我解决它.....

非常感谢..

我也参考了这个链接（https://www.youtube.com/watch?v=8hCfje5VL-0&ab_channel=codefactory2016），但我找不到错误原因。

Answer 1

我会改的

MessageBox.Show("Error   " + ex); 

到

MessageBox.Show("Error   " + ex.Message);

它会让你更好地理解错误

另外，使用参数是非常好的做法，这样可以防止单引号问题并防止 sql 注入问题：

        try
        {
            OleDbConnection connection = new OleDbConnection(@"Provider = Microsoft.ACE.OLEDB.12.0; Data Source = F:\Database\DBAdatabase.accdb; Persist Security Info = False; ");
            OleDbCommand command = new OleDbCommand("", connection);
            for (int s = 0; s < dataGridView1.Rows.Count - 1; s++)
            {
                command.Parameters.AddWithValue("@position",dataGridView1.Rows[s].Cells[0].Value);
                command.Parameters.AddWithValue("@lvPosition",dataGridView1.Rows[s].Cells[1].Value);

                command.CommandText = "INSERT INTO Quotations (Position, LVPosition) VALUES (@position, @lvPosition)";

                connection.Open();

                //this line is not needed as it is set in the command constructor above
                //command.Connection = connection; 

                command.ExecuteNonQuery();
                MessageBox.Show("Data Saved");

                connection.Close();

                //edit - this needs to run or you will have duplicate values inserted
                command.Parameters.Clear(); 
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show("Error   " + ex.Message);
        }

即使我仍然会认真考虑使用连接和命令的语句，并尝试打开连接。但这有点离题了