我的应用程序显示办公楼层的布局,其中座位被描绘为一个矩形,边距,笔划,高度,宽度和对齐方式都保存在数据库中,用于每个座位ID。根据分配状态,矩形的填充为红色或绿色。分配状态和占用详细信息保存在SQL db中。我需要为每个矩形分别使用 MouseLeftButtonDown 方法。这将告诉我占用者的详细信息。
//Code Behind
public SeatUserControl()
{
string cubeId = "";
string status = "";
string name = "";
string number = "";
int height = 0;
int width = 0;
int leftMargin = 0;
int topMargin = 0;
InitializeComponent();
SqlDataAdapter data = new SqlDataAdapter();
DataTable dt = new DataTable();
string SqlQuery = "select c.SeatId,c.Height,c.Width,c.Stroke,c.MarginTop,c.MarginLeft,e.Status,e.EmpName,e.EmpNumber from SeatDetails c Join MasterData e ON c.SeatId =e.SeatId";
SqlConnection sqlconn = new SqlConnection(connectionstring);
sqlconn.Open();
data = new SqlDataAdapter(SqlQuery, sqlconn);
data.Fill(dt);
try
{
foreach (DataRow row in dt.Rows)
{
leftMargin = int.Parse(row["MarginLeft"].ToString());
topMargin = int.Parse(row["MarginTop"].ToString());
height = int.Parse(row["Height"].ToString());
width = int.Parse(row["width"].ToString());
status = row["Status"].ToString();
cubeId = row["SeatId"].ToString();
name = row["EmpName"].ToString();
number = row["EmpNumber"].ToString();
PlaceRectangles();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
sqlconn.Close();
}
public string PlaceRectangles()
{
Rectangle rect = new Rectangle();
rect.Height = height;
rect.Width = width;
SolidColorBrush StrokeBrush = new SolidColorBrush(Colors.Black);
rect.Stroke = StrokeBrush;
rect.VerticalAlignment = VerticalAlignment.Top;
rect.HorizontalAlignment = HorizontalAlignment.Left;
rect.Margin = new Thickness(leftMargin, topMargin, 0, 0);
rect.RadiusX = 8;
rect.RadiusY = 5;
if (status.Equals("Allocated"))
{
SolidColorBrush myBrush = new SolidColorBrush(Colors.RoyalBlue);
rect.Fill = myBrush;
}
else if (status.Equals("Available"))
{
SolidColorBrush myBrush = new SolidColorBrush(Colors.Red);
rect.Fill = myBrush;
}
else
{
SolidColorBrush myBrush = new SolidColorBrush(Colors.White);
rect.Fill = myBrush;
}
seatCanvas.Children.Add(rect);
}
}
//XAML
<UserControl x:Class="SpaceAllocator.SeatUserControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="580" d:DesignWidth="800">
<Grid Height="580" Width="800">
<Canvas Name="seatCanvas" Height="580" Width="800" Margin="0,3,-2,78"> </Canvas>
</Grid>
</UserControl>
enter code here
答案 0 :(得分:2)
如果在启动应用程序时调用此代码,则会自动将事件处理程序添加到Rectangle类型的所有新对象中:
EventManager.RegisterClassHandler(typeof(Rectangle), MouseLeftButtonDownEvent,
new MouseButtonEventHandler(OnMouseDown), false);
private void OnMouseDown(object sender, MouseButtonEventArgs e)
{
}
答案 1 :(得分:2)
创建矩形时添加事件处理程序:
System.Windows.Shapes.Rectangle rect = new System.Windows.Shapes.Rectangle();
rect.MouseLeftButtonDown += rect_MouseLeftButtonDown;
// apply margins and what not
然后你在这里处理鼠标左键:
void rect_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
var rect = sender as System.Windows.Shapes.Rectangle;
// do whatever
}