我是新手，我有一个非常基本的C＃WPF应用程序。我的数据存在于XML文件中，其中的项目被加载到我使用一系列网格，堆栈面板和边框创建的日历视图中。我应该创建一个类，但我不是因为我要快速而肮脏。
所有东西都被正确加载和显示，但我的问题是当我删除一个项目（更新XML文件）时，我不知道如何刷新/重新加载窗口。我确定我使用的控制层次最差。
XAML：
<Window x:Class="myWindow.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="myWindow">
<ScrollViewer>
<Grid Name="CalendarView">
<ComboBox Name="myComboBox" SelectionChanged="LoadXML" >
</ComboBox>
<Grid>
<Button Name="DeleteItem" Click="DeleteItem_Click" Content="Delete"></Button>
<Button Name="CancelBtn" Click="CancelBtn_Click" Content="Cancel"></Button>
</Grid>
</Grid>
</ScrollViewer>
</Window>
代码隐藏：
private void LoadXML(object sender, EventArgs e)
{
XElement myXML= XElement.Load(myComboBox.SelectedValue+"XML.xml");
List<string> monthList = new List<string>();
var Months = from x in myXML.Elements("Month")
select x;
//CREATE EACH MONTH AND ADD DAYS AND ITEMS
foreach (var month in Months)
{
var monthName = month.Attribute("name").Value;
string[] monthSplit = monthName.Split(new Char[] { '_' });
var monthMonth = monthSplit[0];
var monthYear = monthSplit[1];
int numberMonth = 0;
switch (monthMonth)
{
case "January":
numberMonth = 1;
break;
case "February":
numberMonth = 2;
break;
case "March":
numberMonth = 3;
break;
case "April":
numberMonth = 4;
break;
case "May":
numberMonth = 5;
break;
case "June":
numberMonth = 6;
break;
case "July":
numberMonth = 7;
break;
case "August":
numberMonth = 8;
break;
case "September":
numberMonth = 9;
break;
case "October":
numberMonth = 10;
break;
case "November":
numberMonth = 11;
break;
case "December":
numberMonth = 12;
break;
}
//create the month element
var monthID = monthMonth+monthYear;
monthList.Add(monthName);
Grid CalendarMonth = new Grid();
CalendarMonth.Name = monthID;
CalendarView.Children.Add(CalendarMonth);
this.RegisterName(monthID, CalendarMonth);
//find the month in the system calendar
int monthDays = DateTime.DaysInMonth(int.Parse(monthYear), numberMonth);
for (var day = 1; day <= monthDays; day++)
{
StackPanel dateblock = new StackPanel();
DateTime systemDay = DateTime.Parse(monthMonth+" "+day+", "+monthYear);
var dayName = systemDay.DayOfWeek.ToString();
var dayMonth = systemDay.Month.ToString();
var dayYear = systemDay.Year;
//ASSIGN HORIZONTAL INDEX DEPENDING ON DAY OF WEEK
//ADD DATEBLOCK TO CALENDAR
Grid.SetColumn(dateblock, dayIndex);
Grid.SetRow(dateblock, weekIndex);
dateblock.Name = dayName +"_"+ monthMonth+"_"+day.ToString()+"_" + dayYear.ToString();
CalendarMonth.Children.Add(dateblock);
//CREATE THE ITEMs
var xmldays = from x in month.Elements("Day")
select x;
//need to match up the day with the system day in order to find the item in the xml
foreach (var xmlday in xmldays)
{
var xmldaydate = xmlday.Attribute("name").Value;
string[] xmldaySplit = xmldaydate.Split(new Char[] { '_' });
var xmldayName = xmldaySplit[0];
if (xmldayName + xmldaySplit[2] == dayName+day)
{
var items = from x in xmlday.Elements("item")
select x;
var itemCount = 0;
foreach (var item in items)
{
itemCount++;
Border itemButton = new Border();
string itemButtonName = monthMonth + "_" + day + "_" + monthYear + "_" + "item" + itemCount.ToString();
itemButton.Name = itemButtonName;
itemButton.MouseLeftButtonDown += new MouseButtonEventHandler(ItemClick);
//ADD ITEM TO DAY
dateblock.Children.Add(itemButton);
this.RegisterName(itemButtonName, itemButton);
//ADD ITEM NAME
TextBlock itemName = new TextBlock();
itemButton.Child = itemName;
}
}
}
}
}
}
当您点击某个项目时，会弹出ItemInfo框，其中包含删除按钮
private void ItemClick(object sender, MouseButtonEventArgs e)
{
Border itemButton = sender as Border;
StackPanel dateBlock = itemButton.Parent as StackPanel;
XElement myXML = XElement.Load(myComboBox.SelectedValue + "XML.xml");
string[] itemIDarray = itemButton.Name.Split(new Char[] { '_' });
var itemID = int.Parse(itemIDarray[3].Replace("item", ""));
var days = from x in myXML.Elements("Month").Elements("Day")
select x;
foreach (var day in days)
{
var dayID = day.Attribute("name").Value;
if (dayID == dateBlock.Name)
{
var items = from x in day.Elements("item")
select x;
var itemCount = 0;
foreach (var item in items)
{
itemCount++;
if (itemCount == itemID)
{
Date.Text = dayID;
ID.Text = itemID.ToString();
}
}
}
}
}
这就是我的问题发生的地方：
private void DeleteItem_Click(object sender, RoutedEventArgs e)
{
var itemIndex = int.Parse(ID.Text);
var itemDate = Date.Text;
string[] itemDateSplit = itemDate.Split(new Char[]{'_'});
XElement myXML= XElement.Load(myComboBox.SelectedValue + "XML.xml");
var days = from x in myXML.Elements("Month").Elements("Day")
select x;
foreach (var day in days)
{
if (day.Attribute("name").Value == itemDate)
{
var items = from x in day.Elements("item")
select x;
var itemCount = 0;
foreach (var item in items)
{
itemCount++;
if (itemCount == itemIndex)
{
var itemDay = item.Parent;
var itemMonth = itemDay.Parent;
var itemName = string.Format("{0}_{1}_{2}_{3}",itemDateSplit[1],itemDateSplit[2],itemDateSplit[3],"item"+itemCount);
item.Remove();
Border itemButton = (Border)this.FindName(itemName);
StackPanel dateBlock = (StackPanel)itemButton.Parent;
Grid CalendarMonth = (Grid)dateBlock.Parent;
if (itemDay.HasElements == false)
{
itemDay.Remove();
}
if (itemMonth.HasElements == false)
{
itemMonth.Remove();
}
myXML.Save(myComboBox.SelectedValue + "XML.xml");
dateBlock.UpdateLayout();
CalendarMonth.UpdateLayout();
}
}
}
}
}
}
}
一旦删除了一个项目（有效，文件更新），我无法让窗口重新加载并显示新数据。整个窗口只是坐在那里，失去了所有的互动性。没有错误。不知道我需要调用什么样的刷新，或者我是否需要使用绑定。再一次 - 抱歉凌乱。