Question

这是我第一次使用数据库，但是我被困在这里，不太确定该怎么做。这是我的代码：

        private OleDbConnection connection = new OleDbConnection();
    public AddProfile()
    {
        InitializeComponent();
        connection.ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Users\Caden\source\repos\PJBot\PJBot\bin\Debug\Profiles.mdb";
        connection.Open();

        //updateQuery.ExecuteNonQuery();



    }

    private void button1_Click(object sender, EventArgs e)
    {
        OleDbCommand updateQuery = new OleDbCommand("INSERT INTO Profiles (FullName,ProfileName,Email,Password,CardNumber,EXPMonth,EXPYear,CVV) VALUES(@name1,@name2,@email,@pass,@card,@expm,@expy,@cvv)", connection);
        updateQuery.Parameters.Add("@name2", OleDbType.VarChar).Value = textBox1.Text; //Profile Name
        updateQuery.Parameters.Add("@email", OleDbType.Numeric).Value = textBox2.Text; //Email
        updateQuery.Parameters.Add("@pass", OleDbType.Numeric).Value = textBox3.Text; //Pass
        updateQuery.Parameters.Add("@name1", OleDbType.VarChar).Value = textBox4.Text; //FullName
        updateQuery.Parameters.Add("@card", OleDbType.VarChar).Value = textBox5.Text; //CardNumber
        updateQuery.Parameters.Add("@expm", OleDbType.Numeric).Value = comboBox1.Text; //EXPMonth
        updateQuery.Parameters.Add("@expy", OleDbType.Numeric).Value = comboBox2.Text; //EXPYear
        updateQuery.Parameters.Add("@cvv", OleDbType.VarChar).Value = textBox7.Text; //CVV
        updateQuery.ExecuteNonQuery();
        connection.Close();
        MessageBox.Show("Profile Saved");
    }

我试图让用户根据用户在文本框中输入的内容将其信息保存到数据库中。

Answer 1

参数的顺序应与INSERT语句中指定的列的顺序相匹配，因此：

private void button1_Click(object sender, EventArgs e)
{
    OleDbCommand updateQuery = new OleDbCommand("INSERT INTO Profiles (FullName,ProfileName,Email,Password,CardNumber,EXPMonth,EXPYear,CVV) VALUES(@name1,@name2,@email,@pass,@card,@expm,@expy,@cvv)", connection);
    updateQuery.Parameters.Add("@name1", OleDbType.VarChar).Value = textBox4.Text; //FullName
    updateQuery.Parameters.Add("@name2", OleDbType.VarChar).Value = textBox1.Text; //Profile Name
    updateQuery.Parameters.Add("@email", OleDbType.Numeric).Value = textBox2.Text; //Email
    updateQuery.Parameters.Add("@pass", OleDbType.Numeric).Value = textBox3.Text;  //Pass
    updateQuery.Parameters.Add("@card", OleDbType.VarChar).Value = textBox5.Text;  //CardNumber
    updateQuery.Parameters.Add("@expm", OleDbType.Numeric).Value = comboBox1.Text; //EXPMonth
    updateQuery.Parameters.Add("@expy", OleDbType.Numeric).Value = comboBox2.Text; //EXPYear
    updateQuery.Parameters.Add("@cvv", OleDbType.VarChar).Value = textBox7.Text;   //CVV
    updateQuery.ExecuteNonQuery();
    connection.Close();
    MessageBox.Show("Profile Saved");
}

将数据从文本框保存到MS Access数据库

1 个答案: