//重绘
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
for (int i = 0; i < Items.Count; i++)
{
MyListBoxItem item = Items[i] as MyListBoxItem;
if (item != null)
{
Rectangle bound = GetItemRectangle(i);
if (i == this.SelectedIndex)//选中项
{
e.Graphics.FillRectangle(Brushes.Gray, bound);
e.Graphics.DrawImage(item.img, new Rectangle(bound.Left + 5, bound.Top + 6, 40, 48));
e.Graphics.DrawString(" 使用者：" + item.userName + " 所属部门：" + item.department, new Font("微软雅黑", 10), Brushes.White, new PointF(bound.Left + 5 + 50, bound.Top + 6));
e.Graphics.DrawString(" 计算机编号：" + item.id + " IP：" + item.ip, new Font("微软雅黑", 11), Brushes.White, new PointF(bound.Left + 5 + 50, bound.Top + 20 + 6));
}
else if (item == UnderMouseItem) //鼠标滑过
{
e.Graphics.FillRectangle(Brushes.Ivory, bound);
e.Graphics.DrawImage(item.img, new Rectangle(bound.Left + 5, bound.Top + 6, 40, 48));
e.Graphics.DrawString(" 使用者：" + item.userName + " 所属部门：" + item.department, new Font("微软雅黑", 10), Brushes.Black, new PointF(bound.Left + 5 + 50, bound.Top + 6));
e.Graphics.DrawString(" 计算机编号：" + item.id + " IP：" + item.ip, new Font("微软雅黑", 11), Brushes.Black, new PointF(bound.Left + 5 + 50, bound.Top + 20 + 6));
}
else //正常项
{
e.Graphics.DrawImage(item.img, new Rectangle(bound.Left + 5, bound.Top + 6, 40, 48));
e.Graphics.DrawString(" 使用者：" + item.userName + " 所属部门：" + item.department, new Font("微软雅黑", 10), Brushes.Black, new PointF(bound.Left + 5 + 50, bound.Top + 6));
e.Graphics.DrawString(" 计算机编号：" + item.id + " IP：" + item.ip, new Font("微软雅黑", 11), Brushes.Black, new PointF(bound.Left + 5 + 50, bound.Top + 20 + 6));
}
}
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
for (int i = 0; i < Items.Count; ++i)
{
Rectangle rect = this.GetItemRectangle(i);
if (rect.Contains(e.Location))
{
UnderMouseItem = Items[i] as MyListBoxItem;
Invalidate();
break;
}
}
}
//设置各项高度
protected override void OnMeasureItem(MeasureItemEventArgs e)
{
try
{
if (e.Index >= 0)
{
base.OnMeasureItem(e);
MyListBoxItem i = Items[e.Index] as MyListBoxItem;
if (i != null)
{
e.ItemHeight = 60;
}
}
}
catch
{
}
}
//
//查询在线客机
//返回：在线客机列表
//
public List <MyListBoxItem> getComputer()
{
MySqlConnection mycon = getMySqlCon();
MySqlDataReader reader = null;
List <MyListBoxItem> items = new List <MyListBoxItem>();
MyListBoxItem item = null;
try
{
if (mycon != null)
{
mycon.Open();
Console.WriteLine("数据库user_LoginInfo打开成功！！！");
String sql = "select * from user_LoginInfo where department not like '%管理员%'";
MySqlCommand mySqlCommand = new MySqlCommand(sql, mycon);
reader = mySqlCommand.ExecuteReader();
while (reader.Read())
{
if (reader.HasRows)
{
if (reader.GetInt32("isOnline") != 0)
{
item = new MyListBoxItem(reader.GetInt32(0), reader.GetString(1), reader.GetString(2), reader.GetString(3), Resources.test);
items.Add(item);
}
}
}
Console.WriteLine("数据库user_LoginInfo读取成功！！！");
return(items);
}
}
catch (Exception e)
{
Console.WriteLine("查询失败了！错误：" + e.Message);
return(null);
}
finally
{
reader.Close();
mycon.Close();
}
return(items);
}