我正在尝试将某些文本的内容序列化为XML文件（在用户保存其选择时执行），然后稍后将其反序列化（当用户选择显示其保存的选择时）。
我在序列化时一直关注以下tutorial。
我还尝试通过LINQ to XML执行此操作，但要么是获取命名空间错误，要么工具没有返回错误，但是没有工作（具有如下所述的相同问题）。
我遇到的问题是我的代码没有返回任何错误，但是函数不起作用（我有一个标签控件，允许我看到'catch'被返回）。我正在使用C＃在Expression Blend中构建工具。
这是我的SaveSelection.cs类
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Xml.Serialization;
using System.Xml;
namespace DYH
{
public class SaveSelections
{
[XmlAttribute("Title")]
public string Title
{ get; set; }
[XmlElement("Roof")]
public string RoofSelection
{ get; set; }
[XmlElement("Cladding")]
public string CladdingSelection
{ get; set; }
[XmlElement("MixedCladding")]
public string MixedCladdingSelection
{ get; set; }
[XmlElement("FAJ")]
public string FAJSelection
{ get; set; }
[XmlElement("GarageDoor")]
public string GarageDoorSelection
{ get; set; }
[XmlElement("FrontDoor")]
public string FrontDoorSelection
{ get; set; }
}
}
这是我的C＃代码
// Save Selection Button
private void Button_SaveSelection_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
try
{
// Save selections into the SavedSelections.xml doc
SaveSelections userselection = new SaveSelections();
userselection.Title = TextBox_SaveSelection.Text;
userselection.RoofSelection = Button_Roof_Select.Text;
userselection.CladdingSelection = Button_Cladding_Select.Text;
userselection.MixedCladdingSelection = Button_MixedCladding_Select.Text;
userselection.FAJSelection = Button_FAJ_Select.Text;
userselection.GarageDoorSelection = Button_GarageDoor_Select.Text;
userselection.FrontDoorSelection = Button_FrontDoor_Select.Text;
SerializeToXML(userselection);
// XDocument xmlSaveSelections = XDocument.Load("../SavedSelections.xml");
//
// XElement newSelection = new XElement("Selection", //xmlSaveSelections.Element("Selections").Add(
// //new XElement("Selection",
// new XElement("Title", TextBox_SaveSelection.Text),
// new XElement("RoofSelection", Button_Roof_Select.Text),
// new XElement("CladdingSelection", Button_Cladding_Select.Text),
// new XElement("MixedCladdingSelection", Button_MixedCladding_Select.Text),
// new XElement("FAJSelection", Button_FAJ_Select.Text),
// new XElement("GarageDoorSelection", Button_GarageDoor_Select.Text),
// new XElement("FrontDoorSelection", Button_FrontDoor_Select.Text));
//
//// xmlSaveSelections.Add(newSelection);
//// xmlSaveSelections.Save("../SavedSelections.xml");
SelectionLabel.Text = "Your selection has been saved as " + "'" + TextBox_SaveSelection.Text + "'. We suggest you write down the name of your selection.";
}
catch(Exception ex)
{
throw ex;
SelectionLabel.Text = "There was a problem saving your selection. Please try again shortly.";
}
}
// Saves SaveSelection.cs to XML file SavedSelections.xml
static public void SerializeToXML(SaveSelections selection)
{
XmlSerializer serializer = new XmlSerializer(typeof(SaveSelections));
TextWriter textWriter = new StreamWriter(@"/SavedSelections.xml");
serializer.Serialize(textWriter, selection);
textWriter.Close();
}
我已经留下了我之前尝试过的一个注释的证据，因此您可以看到我之前尝试过的格式。
我的问题是，当我尝试使用该工具时，SelectionLabel.Text会返回“保存您的选择时出现问题。请稍后重试。”所以我知道代码返回了catch并且没有执行'try'。
任何帮助??
编辑18/6/2012：以下代码是根据问题的正确答案工作的代码。
public void Button_SaveSelection_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
string roofSelection = TextBox_SaveSelection.Text + "_RoofSelection";
string claddingSelection = TextBox_SaveSelection.Text + "_CladdingSelection";
string mixedCladdingSelection = TextBox_SaveSelection.Text + "_MixedCladdingSelection";
string fajSelection = TextBox_SaveSelection.Text + "_FAJSelection";
string garageDoorSelection = TextBox_SaveSelection.Text + "_GarageDoorSelection";
string frontDoorSelection = TextBox_SaveSelection.Text + "_FrontDoorSelection";
try
{
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
// Gives us 6Mb of storage space in IsoStore
Int64 isoSpaceNeeded = 1048576 * 6;
Int64 currentIsoSpace = store.AvailableFreeSpace;
// If space needed is greater than (>) space available, increase space
if (isoSpaceNeeded > currentIsoSpace)
{
// If user accepts space increase
if (store.IncreaseQuotaTo(currentIsoSpace + isoSpaceNeeded))
{
IsolatedStorageFileStream file = store.CreateFile("SavedSelections.txt");
file.Close();
// Stream writer to populate information in
using (StreamWriter sw = new StreamWriter(store.OpenFile("SavedSelections.txt", FileMode.Open, FileAccess.Write)))
{
appSettings.Add(roofSelection, Button_Roof_Select.Text);
sw.WriteLine(roofSelection);
appSettings.Add(claddingSelection, Button_Cladding_Select.Text);
sw.WriteLine(claddingSelection);
appSettings.Add(mixedCladdingSelection, Button_MixedCladding_Select.Text);
sw.WriteLine(mixedCladdingSelection);
appSettings.Add(fajSelection, Button_FAJ_Select.Text);
sw.WriteLine(fajSelection);
appSettings.Add(garageDoorSelection, Button_GarageDoor_Select.Text);
sw.WriteLine(garageDoorSelection);
appSettings.Add(frontDoorSelection, Button_FrontDoor_Select.Text);
sw.WriteLine(frontDoorSelection);
}
SelectionLabel.Text = "Your selection has been saved as " + "'" + TextBox_SaveSelection.Text + "'. We suggest you write down the name of your selection.";
}
}
}
SelectionLabel.Text = "Your selection has been saved as " + "'" + TextBox_SaveSelection.Text + "'. We suggest you write down the name of your selection.";
}
catch //(Exception ex)
{
//throw ex;
SelectionLabel.Text = "There was a problem saving your selection. Please try again shortly.";
}
}
答案 0 :(得分：0)
看起来您的问题是因为您正在尝试某个文件，但该文件并非来自用户操作启动的FileSaveDialog。您正在遇到Silverlight的安全功能，您无法访问本地文件系统。相反，尝试写入IsolatedStorage。但是，请注意最终用户可以完全（以及有选择地）禁用应用程序存储，因此您也需要处理这些异常。