调用 XamlReader.Load(xmlReader) 时获取 XamlParseException
在button1_Click(object sender, RoutedEventArgs e)中调用XamlReader.Load()时,我收到XamlParseException,代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
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.Navigation;
using System.Windows.Shapes;
using System.Data.SqlClient;
using System.Data;
using System.IO;
using HTMLConverter;
using System.Windows.Markup;
namespace StackoverflowTest
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public static SqlConnection conn = new SqlConnection("Server=" + @".\SQLEXPRE" +
";Initial Catalog=Hukuk;" +
"Integrated Security=True;" +
"User ID=;" +
"Password=;");
public MainWindow()
{
InitializeComponent();
try
{
conn.Open();
}
catch (Exception ex)
{
MessageBox.Show("Error opening SQL Server connection\n" + ex.Message);
//Close();
}
}
public static FlowDocument SetRTF(string xamlString)
{
StringReader stringReader = new StringReader(xamlString);
System.Xml.XmlReader xmlReader = System.Xml.XmlReader.Create(stringReader);
return XamlReader.Load(xmlReader) as FlowDocument;
}
private void button1_Click(object sender, RoutedEventArgs e)
{
SqlCommand commProc = new SqlCommand("SELECT Name, Content from Document where ID=3219", MainWindow.conn);
string str;
FlowDocumentReader fdocr = new FlowDocumentReader();
SqlDataReader dr = commProc.ExecuteReader();
try
{
if (dr.Read())
{
byte[] bt = (byte[])dr["Content"];
str = Encoding.Default.GetString(bt);
str = HTMLConverter.HtmlToXamlConverter.ConvertHtmlToXaml(str, true);
fdocr.Document = MainWindow.SetRTF(str);
}
}
catch (Exception ex)
{
MessageBox.Show("An error occured while trying to view document\n" + ex.Message);
}
dr.Close();
dr.Dispose();
}
}
}
不幸的是,无法发布我试图传递的xamlstring,因为它太大了..还有其他方法可以显示吗给你吗?
异常详细信息如下:
System.Windows.Markup.XamlParseException occurred
Message='Add value to collection of type 'System.Windows.Documents.TableRowGroupCollection' threw an exception.' Line number '1' and line position '28143'.
Source=PresentationFramework
LineNumber=1
LinePosition=28143
StackTrace:
at System.Windows.Markup.XamlReader.RewrapException(Exception e, IXamlLineInfo lineInfo, Uri baseUri)
at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, Boolean skipJournaledProperties, Uri baseUri)
at System.Windows.Markup.XamlReader.Load(XamlReader xamlReader, ParserContext parserContext)
at System.Windows.Markup.XamlReader.Load(XmlReader reader, ParserContext parserContext, XamlParseMode parseMode)
at System.Windows.Markup.XamlReader.Load(XmlReader reader)
at WpfApplication1.MainWindow.SetRTF(String xamlString) in C:\Documents and Settings\nosirovkh\Рабочий стол\посл\WpfApplication1\WpfApplication1\WpfApplication1\MainWindow.xaml.cs:line 69
InnerException: System.ArgumentNullException
Message=Value cannot be null.
Parameter name: item
Source=PresentationFramework
ParamName=item
StackTrace:
at MS.Internal.Documents.TableTextElementCollectionInternal`2.Add(TElementType item)
at MS.Internal.Documents.ContentElementCollection`2.System.Collections.IList.Add(Object value)
at System.Windows.Documents.TableRowGroupCollection.System.Collections.IList.Add(Object value)
at System.Xaml.Schema.XamlTypeInvoker.AddToCollection(Object instance, Object item)
at MS.Internal.Xaml.Runtime.ClrObjectRuntime.Add(Object collection, XamlType collectionType, Object value, XamlType valueXamlType)
InnerException:
I am getting XamlParseException when calling XamlReader.Load() in button1_Click(object sender, RoutedEventArgs e) the code below:
using System;
using System.Collections.Generic;
using System.Linq;
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.Navigation;
using System.Windows.Shapes;
using System.Data.SqlClient;
using System.Data;
using System.IO;
using HTMLConverter;
using System.Windows.Markup;
namespace StackoverflowTest
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public static SqlConnection conn = new SqlConnection("Server=" + @".\SQLEXPRE" +
";Initial Catalog=Hukuk;" +
"Integrated Security=True;" +
"User ID=;" +
"Password=;");
public MainWindow()
{
InitializeComponent();
try
{
conn.Open();
}
catch (Exception ex)
{
MessageBox.Show("Error opening SQL Server connection\n" + ex.Message);
//Close();
}
}
public static FlowDocument SetRTF(string xamlString)
{
StringReader stringReader = new StringReader(xamlString);
System.Xml.XmlReader xmlReader = System.Xml.XmlReader.Create(stringReader);
return XamlReader.Load(xmlReader) as FlowDocument;
}
private void button1_Click(object sender, RoutedEventArgs e)
{
SqlCommand commProc = new SqlCommand("SELECT Name, Content from Document where ID=3219", MainWindow.conn);
string str;
FlowDocumentReader fdocr = new FlowDocumentReader();
SqlDataReader dr = commProc.ExecuteReader();
try
{
if (dr.Read())
{
byte[] bt = (byte[])dr["Content"];
str = Encoding.Default.GetString(bt);
str = HTMLConverter.HtmlToXamlConverter.ConvertHtmlToXaml(str, true);
fdocr.Document = MainWindow.SetRTF(str);
}
}
catch (Exception ex)
{
MessageBox.Show("An error occured while trying to view document\n" + ex.Message);
}
dr.Close();
dr.Dispose();
}
}
}
Unfortunately a cannot post the xamlstring I'm trying to pass because it is too big..Is there any other way to show it to you?
And the exception details are here:
System.Windows.Markup.XamlParseException occurred
Message='Add value to collection of type 'System.Windows.Documents.TableRowGroupCollection' threw an exception.' Line number '1' and line position '28143'.
Source=PresentationFramework
LineNumber=1
LinePosition=28143
StackTrace:
at System.Windows.Markup.XamlReader.RewrapException(Exception e, IXamlLineInfo lineInfo, Uri baseUri)
at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, Boolean skipJournaledProperties, Uri baseUri)
at System.Windows.Markup.XamlReader.Load(XamlReader xamlReader, ParserContext parserContext)
at System.Windows.Markup.XamlReader.Load(XmlReader reader, ParserContext parserContext, XamlParseMode parseMode)
at System.Windows.Markup.XamlReader.Load(XmlReader reader)
at WpfApplication1.MainWindow.SetRTF(String xamlString) in C:\Documents and Settings\nosirovkh\Рабочий стол\посл\WpfApplication1\WpfApplication1\WpfApplication1\MainWindow.xaml.cs:line 69
InnerException: System.ArgumentNullException
Message=Value cannot be null.
Parameter name: item
Source=PresentationFramework
ParamName=item
StackTrace:
at MS.Internal.Documents.TableTextElementCollectionInternal`2.Add(TElementType item)
at MS.Internal.Documents.ContentElementCollection`2.System.Collections.IList.Add(Object value)
at System.Windows.Documents.TableRowGroupCollection.System.Collections.IList.Add(Object value)
at System.Xaml.Schema.XamlTypeInvoker.AddToCollection(Object instance, Object item)
at MS.Internal.Xaml.Runtime.ClrObjectRuntime.Add(Object collection, XamlType collectionType, Object value, XamlType valueXamlType)
InnerException:
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评论(2)
看来您的 XAML 可能是由某个程序生成的,这就是问题的根源。
问题是这样的:
这是正确的代码:
有 6 个表发生这种情况。
我不知道是什么生成了这个 XAML,但这似乎是一个严重的错误。您要么需要修复它,要么自己修复 XAML 文件,方法是编写一个小程序来查找此类内容,或者使用(最好是)Visual Studio 手动修复。
It looks like your XAML is probably generated by some program, which is the source of the problem.
Here is the problem:
And here is the correct code:
There are 6 tables where this occurs.
I don't know what generated this XAML, but this seems like a bad bug. You will either need it to be fixed or fix the XAML file yourself, either by writing a small program to find that kind of thing, or manually with (preferably) Visual Studio.
当使用以下 xaml 代码启动 WPF 应用程序时,我遇到了类似的错误:
结果导致“XmalParseException 添加到集合...”的原因是我的 IVView 类应该是 UserControl,但我将其创建为 Window 的扩展。我怀疑我们也有类似的问题。
I had a similar error when launch a WPF application with the following xaml code:
Turns out the reason that caused "XmalParseException add to collection..." was that my IVView class should have been UserControl but I created it as an extension of Window. I am suspecting that we have having similar issues.