从mysql检索图像并设置为pictureBox C#

Question

我试图从数据库中检索数据，并使用文本更改将其设置为textbox和图片框。

这是我的代码：

private void textBox1_TextChanged(object sender, EventArgs e)
    {
        string sqlstring = "database = db_phonebook; user = root; password = ''; server = 'localhost'; SSL Mode = None";
        MySqlConnection mysqlcon = new MySqlConnection(sqlstring);
        MySqlCommand mysqlcom;
        MySqlDataReader mdr;

        mysqlcon.Open();

        string selectquery = ("SELECT* FROM tbl_phonebook WHERE CID LIKE '" + this.textBox1.Text + "%'");
        mysqlcom = new MySqlCommand(selectquery, mysqlcon);

        mdr = mysqlcom.ExecuteReader();

    if (mdr.Read())
        {
            cid.Text = mdr.GetString("CID");
            name.Text = mdr.GetString("Name");
            address.Text = mdr.GetString("Address");
            contact.Text = mdr.GetString("Contact_Number");
            email.Text = mdr.GetString("Email_Address");
            photobox.Image = mdr.("Photo"); /// this line is the error it says "cannot implicitly convert type 'string' to 'System.Drawing.Imaging'
        }
    else
        {
            MessageBox.Show("Record Not Found!");
        }

        mysqlcon.Close();
    }

如何修正“不能隐式地将'string‘转换为'System.Drawing.Imaging’，或者有其他方法在图片框中显示数据库中的图像？

Answer 1

假设您的photobox对象是PictureBox，并且数据库存储到映像的链接或路径，而不是设置.Image属性调用其Load方法，该方法将设置图像位置并加载它：

photobox.Load(mdr.GetString("Photo"));