【数据库课程设计】主页面（二）

我们注册添加了插入图片功能，那么也在主页面显示图片：

 1 private void pictureBox1_Click(object sender, EventArgs e)
 2         {
 3             string uName = Form1.UserName;
 4             int id = Form1.ID;
 5             string sql = "select Image from StaffAccount where ID = '" + id + "'";
 6             string connstr = ConfigurationManager.ConnectionStrings["SQL"].ConnectionString;
 7             SqlConnection conn = new SqlConnection(connstr);
 8             SqlCommand cmd = new SqlCommand(sql, conn);
 9 
10             conn.Open();
11             SqlDataReader r = cmd.ExecuteReader();
12             r.Read();
13             byte[] bs = (byte[])r["Image"];
14             MemoryStream ms = new MemoryStream(bs, true);
15             ms.Write(bs, 0, bs.Length);
16             pictureBox1.Image = new Bitmap(ms, true);
17             ms.Dispose();
18             conn.Close();
19         }

 1 private void panel1_Paint(object sender, PaintEventArgs e)
 2         {
 3             display();
 4         }
 5         private void display()
 6         {
 7             string uName = Form1.UserName;
 8             int id = Form1.ID;
 9             string sql = "select Image from StaffAccount where ID = '" + id + "'";
10             string connstr = ConfigurationManager.ConnectionStrings["WindowsFormsApplication6.Properties.Settings.staffConnectionString1"].ConnectionString;
11             SqlConnection conn = new SqlConnection(connstr);
12             SqlCommand cmd = new SqlCommand(sql, conn);
13 
14             conn.Open();
15             SqlDataReader r = cmd.ExecuteReader();
16             r.Read();
17             byte[] bs = (byte[])r["Image"];
18             MemoryStream ms = new MemoryStream(bs, true);
19             ms.Write(bs, 0, bs.Length);
20             pictureBox1.Image = new Bitmap(ms, true);
21             ms.Dispose();
22             conn.Close();
23         }