c# - 将 [图像] 保存并截图到数据库

Question

我正在尝试将用户打开的图像目录保存到数据库中。但是符号“\”不在路径中。结果像 C:UsersAshleyDesktopScreenshot_1.png 并且如您所见，它没有 \，这使其成为无效路径。

private void button1_Click(object sender, EventArgs e)
    {
        OpenFileDialog open = new OpenFileDialog();
        if (open.ShowDialog() == DialogResult.OK)
        {
            pictureBox1.Image = Image.FromFile(open.FileName);
            pictureBox2.Image = Image.FromFile(open.FileName);
            MySQL.ExecuteNonQuery(@"UPDATE users SET profile_image_dir = '" + open.FileName + "' WHERE username = '" + User.Details.Username + "'");
            MessageBox.Show(""+ open.FileName + "\r\n");
        }

在 MySQL.ExecuteNonQuery 上，我将它保存到数据库中，结果就像我之前展示的那样

Answer 1

参数化查询应该可以工作

string cmdText = @"UPDATE users SET profile_image_dir = @file
                   WHERE username = @uname";

using(MySqlConnection cn = new MySqlConnection(.....))
using(MySqlCommand cmd = new MySqlCommand(cmdText, cn))
{
   cn.Open();
   cmd.Parameters.AddWithValue("@file", open.FileName);
   cmd.Parameters.AddWithValue("@uname", User.Details.Username);
   cmd.ExecuteNonQuery();
}