I would like to provide a web service that lets me download certain Excel workbooks. These Excel workbooks are SpreadsheetGear objects that may be modified with data. I don't want to write them as a file and return the file. Instead, I'd like to stream them into the browser so the user gets a downloaded file.
Here is my attempt that does not work, drawn from this guide from SpreadsheetGear's site:
[System.Web.Services.WebMethod(
Description = "Returns a stream for the excel file")]
public ActionResult downloadTemplate(string excelFileName)
{
var workbook = makeSpreadsheetGearWorkbookFrom(excelFileName);
// Save workbook to an Open XML (XLSX) workbook stream.
System.IO.Stream stream = workbook.SaveToStream(
SpreadsheetGear.FileFormat.OpenXMLWorkbook);
// Reset stream's current position back to the beginning.
stream.Seek(0, System.IO.SeekOrigin.Begin);
return new FileStreamResult(stream,
"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
}
I get the following error:
The web service returned the following result:
500 - Internal Server Error
System.InvalidOperationException: There was an error generating the XML document. ---> System.InvalidOperationException: System.Web.Mvc.FileStreamResult cannot be serialized because it does not have a parameterless constructor.
at System.Xml.Serialization.TypeDesc.CheckSupported () [0x0001c] in <611e64636ff745389933c69c817b2d4a>:0
at System.Xml.Serialization.TypeScope.GetTypeDesc (System.Type type, System.Reflection.MemberInfo source, System.Boolean directReference, System.Boolean throwOnError) [0x0006a] in <611e64636ff745389933c69c817b2d4a>:0
at System.Xml.Serialization.TypeScope.GetTypeDesc (System.Type type) [0x00000] in <611e64636ff745389933c69c817b2d4a>:0
at System.Xml.Serialization.XmlSerializationWriter.CreateUnknownTypeException (System.Type type) [0x00039] in <611e64636ff745389933c69c817b2d4a>:0
at System.Xml.Serialization.XmlSerializationWriter.CreateUnknownTypeException (System.Object o) [0x00007] in <611e64636ff745389933c69c817b2d4a>:0
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriter1.Write3_ActionResult (System.String n, System.String ns, System.Web.Mvc.ActionResult o, System.Boolean isNullable, System.Boolean needType) [0x00048] in <3fa7e61a58e74ec08df7a46ab2fb8972>:0
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriter1.Write7_ActionResult (System.Object o) [0x00028] in <3fa7e61a58e74ec08df7a46ab2fb8972>:0
at Microsoft.Xml.Serialization.GeneratedAssembly.ActionResultSerializer.Serialize (System.Object objectToSerialize, System.Xml.Serialization.XmlSerializationWriter writer) [0x00000] in <3fa7e61a58e74ec08df7a46ab2fb8972>:0
at System.Xml.Serialization.XmlSerializer.Serialize (System.Xml.XmlWriter xmlWriter, System.Object o, System.Xml.Serialization.XmlSerializerNamespaces namespaces, System.String encodingStyle, System.String id) [0x00098] in <611e64636ff745389933c69c817b2d4a>:0
StackTraceEnd
at System.Xml.Serialization.XmlSerializer.Serialize (System.Xml.XmlWriter xmlWriter, System.Object o, System.Xml.Serialization.XmlSerializerNamespaces namespaces, System.String encodingStyle, System.String id) [0x0012f] in <611e64636ff745389933c69c817b2d4a>:0
at System.Xml.Serialization.XmlSerializer.Serialize (System.Xml.XmlWriter xmlWriter, System.Object o, System.Xml.Serialization.XmlSerializerNamespaces namespaces, System.String encodingStyle) [0x00000] in <611e64636ff745389933c69c817b2d4a>:0
at System.Xml.Serialization.XmlSerializer.Serialize (System.Xml.XmlWriter xmlWriter, System.Object o, System.Xml.Serialization.XmlSerializerNamespaces namespaces) [0x00000] in <611e64636ff745389933c69c817b2d4a>:0
at System.Xml.Serialization.XmlSerializer.Serialize (System.IO.TextWriter textWriter, System.Object o, System.Xml.Serialization.XmlSerializerNamespaces namespaces) [0x00015] in <611e64636ff745389933c69c817b2d4a>:0
at System.Xml.Serialization.XmlSerializer.Serialize (System.IO.TextWriter textWriter, System.Object o) [0x00000] in <611e64636ff745389933c69c817b2d4a>:0
at System.Web.Services.Protocols.XmlReturnWriter.Write (System.Web.HttpResponse response, System.IO.Stream outputStream, System.Object returnValue) [0x00079] in <11189ae945ae429a8c10c5e8a65a097a>:0
at System.Web.Services.Protocols.HttpServerProtocol.WriteReturns (System.Object[] returnValues, System.IO.Stream outputStream) [0x0003f] in <11189ae945ae429a8c10c5e8a65a097a>:0
at System.Web.Services.Protocols.WebServiceHandler.WriteReturns (System.Object[] returnValues) [0x00051] in <11189ae945ae429a8c10c5e8a65a097a>:0
at System.Web.Services.Protocols.WebServiceHandler.Invoke () [0x000cc] in <11189ae945ae429a8c10c5e8a65a097a>:0
How should I approach this?
Solved the problem by returning a list of bytes instead of a StreamResult, like so:
public byte[] downloadTemplate(string excelFileName)
//...
byte[] modelData = toByteArray(stream);
return modelData;
}
public byte[] toByteArray(System.IO.Stream stream)
{
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
stream.CopyTo(ms);
return ms.ToArray();
}
}
It is easy to put the byte array into a JObject and then into an XML Envelope.
Related
I'm trying to save two elements, a string and a list of strings to a binary file. I have the class set outside the main script:
}
the main script
}
[Serializable]
class SaveManager
{
public string Info;
public List<InfoSheetList> InfoSheetList ;
}
Then the function that calls it all
public void GetInfoSheet()
{
DatabaseManager.Instance.SQLiteInit();
string Info = PlayerPrefs.GetString ("Info");
string date = PlayerPrefs.GetString ("Date");
string Date=date.Replace("/","-");
string Name = PlayerPrefs.GetString ("Name");
string FilePath="C:/InfoSheets";
DatabaseManager.Instance.SQLiteInit();
InfoSheetList.Clear();
InfoSheetList= DatabaseManager.Instance.MakeInfoSheetList();
Debug.Log("How many in the list " + InfoSheetList.Count);
BinaryFormatter bf = new BinaryFormatter();
FileStream fs = File.Create(FilePath + "/" +Date+Name+"InfoSheet.gig");
Debug.Log (fs);
SaveManager sm= new SaveManager();
sm.Info=Info;
sm.InfoSheetList=InfoSheetList;
//PlayerPrefs.DeleteAll ();
bf.Serialize(fs, sm);
fs.Close();
Debug.Log(sm+ "Saved!");
Only I'm getting an exception-
SerializationException: Type 'InfoSheet' in Assembly 'Assembly-CSharp, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' is not marked as serializable.
System.Runtime.Serialization.FormatterServices.InternalGetSerializableMembers (System.RuntimeType type) (at :0)
System.Runtime.Serialization.FormatterServices+<>c__DisplayClass9_0.b__0 (System.Runtime.Serialization.MemberHolder _) (at :0)
System.Collections.Concurrent.ConcurrentDictionary2[TKey,TValue].GetOrAdd (TKey key, System.Func2[T,TResult] valueFactory) (at :0)
System.Runtime.Serialization.FormatterServices.GetSerializableMembers (System.Type type, System.Runtime.Serialization.StreamingContext context) (at :0)
System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitMemberInfo () (at :0)
System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize (System.Type objectType, System.Runtime.Serialization.ISurrogateSelector surrogateSelector, System.Runtime.Serialization.StreamingContext context, System.Runtime.Serialization.Formatters.Binary.SerObjectInfoInit serObjectInfoInit, System.Runtime.Serialization.IFormatterConverter converter, System.Runtime.Serialization.SerializationBinder binder) (at :0)
System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.Serialize (System.Type objectType, System.Runtime.Serialization.ISurrogateSelector surrogateSelector, System.Runtime.Serialization.StreamingContext context, System.Runtime.Serialization.Formatters.Binary.SerObjectInfoInit serObjectInfoInit, System.Runtime.Serialization.IFormatterConverter converter, System.Runtime.Serialization.SerializationBinder binder) (at :0)
System.Runtime.Serialization.Formatters.Binary.ObjectWriter.WriteArray (System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo objectInfo, System.Runtime.Serialization.Formatters.Binary.NameInfo memberNameInfo, System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo memberObjectInfo) (at :0)
System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Write (System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo objectInfo, System.Runtime.Serialization.Formatters.Binary.NameInfo memberNameInfo, System.Runtime.Serialization.Formatters.Binary.NameInfo typeNameInfo) (at :0)
System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize (System.Object graph, System.Runtime.Remoting.Messaging.Header[] inHeaders, System.Runtime.Serialization.Formatters.Binary.__BinaryWriter serWriter, System.Boolean fCheck) (at :0)
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize (System.IO.Stream serializationStream, System.Object graph, System.Runtime.Remoting.Messaging.Header[] headers, System.Boolean fCheck) (at :0)
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize (System.IO.Stream serializationStream, System.Object graph, System.Runtime.Remoting.Messaging.Header[] headers) (at :0)
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize (System.IO.Stream serializationStream, System.Object graph) (at :0)
GigSheetManager.GetGigSheet () (at Assets/Scripts/GigSheetManager.cs:210)
UnityEngine.Events.InvokableCall.Invoke () (at C:/buildslave/unity/build/Runtime/Export/UnityEvent.cs:166)
UnityEngine.Events.UnityEvent.Invoke () (at C:/buildslave/unity/build/Runtime/Export/UnityEvent_0.cs:58)
UnityEngine.UI.Button.Press () (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/Button.cs:36)
UnityEngine.UI.Button.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/Button.cs:45)
UnityEngine.EventSystems.ExecuteEvents.Execute (UnityEngine.EventSystems.IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/EventSystem/ExecuteEvents.cs:50)
UnityEngine.EventSystems.ExecuteEvents.Execute[T] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] functor) (at C:/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/EventSystem/ExecuteEvents.cs:261)
UnityEngine.EventSystems.EventSystem:Update()
What am I missing. The string is serializing, but the list is not.
Thanks in advance!
Alexander, you are right. All I had to do is to add System.Serializable to the Infosheet Class. After I did that it worked! Thanks!
I am getting an exception I have no clue how to debug. It is thrown on the following line:
var serializer = new XmlSerializer(typeof(Universe));
System.Configuration.ConfigurationErrorsException has been thrown
Error Initializing the configuration system.
What is the configuration system, where is it getting initialized and what does it have to do with the XmlSerializer?
The full exception:
System.Configuration.ConfigurationErrorsException: Error Initializing the configuration system. ---> System.Configuration.ConfigurationErrorsException: Unrecognized configuration section <runtime> (/MyPath/Projects/Stars/Stars/Stars.Desktop/bin/Debug/net471/Stars.Desktop.app/Contents/MonoBundle/Stars.Desktop.exe.config line 3)
at System.Configuration.ConfigInfo.ThrowException (System.String text, System.Xml.XmlReader reader) [0x00000] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/ConfigInfo.cs:77
at System.Configuration.SectionGroupInfo.ReadContent (System.Xml.XmlReader reader, System.Configuration.Configuration config, System.Boolean overrideAllowed, System.Boolean root) [0x0011f] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/SectionGroupInfo.cs:330
at System.Configuration.SectionGroupInfo.ReadRootData (System.Xml.XmlReader reader, System.Configuration.Configuration config, System.Boolean overrideAllowed) [0x00007] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/SectionGroupInfo.cs:273
at System.Configuration.Configuration.ReadConfigFile (System.Xml.XmlReader reader, System.String fileName) [0x000ce] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/Configuration.cs:572
at System.Configuration.Configuration.Load () [0x00043] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/Configuration.cs:532
at System.Configuration.Configuration.Init (System.Configuration.Internal.IConfigSystem system, System.String configPath, System.Configuration.Configuration parent) [0x0005d] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/Configuration.cs:138
at System.Configuration.Configuration..ctor (System.Configuration.InternalConfigurationSystem system, System.String locationSubPath) [0x00056] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/Configuration.cs:96
at System.Configuration.InternalConfigurationFactory.Create (System.Type typeConfigHost, System.Object[] hostInitConfigurationParams) [0x0000d] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/InternalConfigurationFactory.cs:41
at System.Configuration.ConfigurationManager.OpenExeConfigurationInternal (System.Configuration.ConfigurationUserLevel userLevel, System.Reflection.Assembly calling_assembly, System.String exePath) [0x000ea] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/ConfigurationManager.cs:119
at System.Configuration.ClientConfigurationSystem.get_Configuration () [0x0000e] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/ClientConfigurationSystem.cs:49
--- End of inner exception stack trace ---
at System.Configuration.ClientConfigurationSystem.get_Configuration () [0x0001f] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/ClientConfigurationSystem.cs:52
at System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection (System.String configKey) [0x00000] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/ClientConfigurationSystem.cs:61
at System.Configuration.ConfigurationManager.GetSection (System.String sectionName) [0x00000] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/System.Configuration/System.Configuration/ConfigurationManager.cs:159
at System.Configuration.PrivilegedConfigurationManager.GetSection (System.String sectionName) [0x00000] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/referencesource/System/misc/PrivilegedConfigurationManager.cs:24
at System.Diagnostics.DiagnosticsConfiguration.GetConfigSection () [0x00000] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/referencesource/System/compmod/system/diagnostics/DiagnosticsConfiguration.cs:171
at System.Diagnostics.DiagnosticsConfiguration.Initialize () [0x0002a] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/referencesource/System/compmod/system/diagnostics/DiagnosticsConfiguration.cs:209
at System.Diagnostics.DiagnosticsConfiguration.get_SwitchSettings () [0x00000] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/referencesource/System/compmod/system/diagnostics/DiagnosticsConfiguration.cs:29
at System.Diagnostics.Switch.InitializeConfigSettings () [0x00013] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/referencesource/System/compmod/system/diagnostics/Switch.cs:272
at System.Diagnostics.Switch.InitializeWithStatus () [0x00046] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/referencesource/System/compmod/system/diagnostics/Switch.cs:211
at System.Diagnostics.Switch.get_SwitchSetting () [0x0000a] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/referencesource/System/compmod/system/diagnostics/Switch.cs:144
at System.Diagnostics.BooleanSwitch.get_Enabled () [0x00000] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/referencesource/System/compmod/system/diagnostics/BooleanSwitch.cs:39
at System.Xml.Serialization.TempAssembly.LoadGeneratedAssembly (System.Type type, System.String defaultNamespace, System.Xml.Serialization.XmlSerializerImplementation& contract) [0x00015] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/referencesource/System.Xml/System/Xml/Serialization/Compilation.cs:164
at System.Xml.Serialization.XmlSerializer..ctor (System.Type type, System.String defaultNamespace) [0x0007e] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/referencesource/System.Xml/System/Xml/Serialization/XmlSerializer.cs:198
at System.Xml.Serialization.XmlSerializer..ctor (System.Type type) [0x00000] in /Users/builder/jenkins/workspace/build-package-osx-mono/2018-06/external/bockbuild/builds/mono-x64/mcs/class/referencesource/System.Xml/System/Xml/Serialization/XmlSerializer.cs:177
at Stars.SaveManager.SaveLoader.SaveUniverse (Stars.Game.Universe universe) [0x0005d] in /MypPath/Projects/Stars/Stars/Stars/SaveManager/SaveLoader.cs:39
You have an error in app.config file. There is a problem with the section runtime. Be sure it is declared in and has valid structure and values.
Here the Inner exception message gives the hint
System.Configuration.ConfigurationErrorsException: Unrecognized configuration section <runtime>
When trying to use Xamarin FFImageLoading plugin on iOs I get this exception:
System.Exception: Please call CachedImageRenderer.Init method in a platform specific project to use FFImageLoading!
at FFImageLoading.Forms.CachedImage.OnSourcePropertyChanged (Xamarin.Forms.BindableObject bindable, System.Object oldValue, System.Object newValue) [0x00007] in C:\projects\ffimageloading\source\FFImageLoading.Forms\CachedImage.cs:133
at Xamarin.Forms.BindableObject.SetValueActual (Xamarin.Forms.BindableProperty property, Xamarin.Forms.BindableObject+BindablePropertyContext context, System.Object value, System.Boolean currentlyApplying, Xamarin.Forms.Internals.SetValueFlags attributes, System.Boolean silent) [0x00120] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:625
at Xamarin.Forms.BindableObject.SetValueCore (Xamarin.Forms.BindableProperty property, System.Object value, Xamarin.Forms.Internals.SetValueFlags attributes, Xamarin.Forms.BindableObject+SetValuePrivateFlags privateAttributes) [0x0015b] in D:\a\1\s\Xam
arin.Forms.Core\BindableObject.cs:417
at Xamarin.Forms.BindableObject.SetValue (Xamarin.Forms.BindableProperty property, System.Object value, System.Boolean fromStyle, System.Boolean checkAccess) [0x0003d] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:573
at Xamarin.Forms.BindableObject.SetValue (Xamarin.Forms.BindableProperty property, System.Object value) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:99
at FFImageLoading.Forms.CachedImage.set_Source (Xamarin.Forms.ImageSource value) [0x00000] in C:\projects\ffimageloading\source\FFImageLoading.Forms\CachedImage.cs:173
at Demo.MainViewModel..ctor () [0x0001f] in <4cd5393447f94973bb9eef7c0de8880d>:0
at FullCameraApp.CameraPage.getLayoutImage (System.Int32 index) [0x00001] in <4cd5393447f94973bb9eef7c0de8880d>:0
at FullCameraApp.CameraPage..ctor (ScoreScan.webServices.WebServices webServices, System.Collections.Generic.List`1[T] imageBytesList) [0x0060b] in <4cd5393447f94973bb9eef7c0de8880d>:0
at ScoreScan.App..ctor () [0x0
0025] in <4cd5393447f94973bb9eef7c0de8880d>:0
at ScoreScan.iOS.AppDelegate.FinishedLaunching (UIKit.UIApplication app, Foundation.NSDictionary options) [0x0000d] in <4cd5393447f94973bb9eef7c0de8880d>:0
at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain(int,string[],intptr,intptr)
at UIKit.UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) [0x00005] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.14.0.14/src/Xamarin.iOS/UIKit/UIApplication.cs:79
at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0002c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.14.0.14/src/Xamarin.iOS/UIKit/UIApplication.cs:63
at ScoreScan.iOS.Application.Main (System.String[] args) [0x00001] in <4cd5393447f94973bb9eef7c0de8880d>:0
2018-10-08 19:47:10.229 ScoreScan.iOS[324:13181] Unhandled managed exception:
Please call CachedImageRenderer.Init method in a platform specific project to use FFImageLoading! (System.Exception)
at FFImageLoading.Forms.CachedImage.OnSourcePropertyChanged (Xamarin.Forms.BindableObject bindable, System.Object oldValue, System.Object newValue) [0x00007] in C:\projects\ffimageloading\source\FFImageLoading.Forms\CachedImage.cs:133
at Xamarin.Forms.BindableObject.SetValueActual (Xamarin.Forms.BindableProperty property, Xamarin.Forms.BindableObject+BindablePropertyContext context, System.Object value, System.Boolean currentlyApplying, Xamarin.Forms.Internals.SetValueFlags attributes, System.Boolean silent) [0x00120] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:625
at Xamarin.Forms.BindableObject.SetValueCore (Xamarin.Forms.BindableProperty property, System.Object value, Xamarin.Forms.Internals.SetValueFlags attributes, Xamarin.Forms.BindableObject+SetValuePrivateFlags privateAttributes) [0x0015b] in D:\a
\1\s\Xamarin.Forms.Core\BindableObject.cs:417
at Xamarin.Forms.BindableObject.SetValue (Xamarin.Forms.BindableProperty property, System.Object value, System.Boolean fromStyle, System.Boolean checkAccess) [0x0003d] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:573
at Xamarin.Forms.BindableObject.SetValue (Xamarin.Forms.BindableProperty property, System.Object value) [0x00000] in D:\a\1\s\Xamarin.Forms.Core\BindableObject.cs:99
at FFImageLoading.Forms.CachedImage.set_Source (Xamarin.Forms.ImageSource value) [0x00000] in C:\projects\ffimageloading\source\FFImageLoading.Forms\CachedImage.cs:173
at Demo.MainViewModel..ctor () [0x0001f] in <4cd5393447f94973bb9eef7c0de8880d>:0
at FullCameraApp.CameraPage.getLayoutImage (System.Int32 index) [0x00001] in <4cd5393447f94973bb9eef7c0de8880d>:0
at FullCameraApp.CameraPage..ctor (ScoreScan.webServices.WebServices webServices, System.Collections.Generic.List`1[T] imageBytesList) [0x0060b] in <4cd5393447f94973bb9eef7c0de8880d>:0
at ScoreScan.App..ctor
ktrace:
How Can I solve this exception?
Call CachedImageRenderer.Init after global::Xamarin.Forms.Forms.Init(); in FinishedLaunching method present in AppDelegate.cs file of iOS project.
It clearly mention that you need to call Init method inside this. The details will be given in the github repository of FFImageLoading plugin
It is mentioned in the following link
I update my Unity from 5.2 to 5.6, this is success. But after update, i can't open file script. This is Error
The file '/Users/vietbac/Desktop/New Unity Project 1/Assets/NewBehaviourScript.cs' could not be opened. Error while loading style :Default
System.IO.IOException: Error while loading style :Default --->
System.TypeInitializationException: An exception was thrown by the
type initializer for System.Drawing.KnownColors --->
System.TypeInitializationException: An exception was thrown by the
type initializer for System.Drawing.GDIPlus --->
System.DllNotFoundException:
/Applications/Unity/MonoDevelop.app/Contents/MacOS/../Frameworks/Mono.framework/Versions/2.10.12/lib/libgdiplus.dylib
at (wrapper managed-to-native) System.Drawing.GDIPlus:GdiplusStartup
(ulong&,System.Drawing.GdiplusStartupInput&,System.Drawing.GdiplusStartupOutput&)
at System.Drawing.GDIPlus..cctor () [0x00000] in :0
--- End of inner exception stack trace --- at System.Drawing.KnownColors..cctor () [0x00000] in :0
--- End of inner exception stack trace --- at System.Drawing.ColorConverter.StaticConvertFromString
(ITypeDescriptorContext context, System.String s,
System.Globalization.CultureInfo culture) [0x00000] in :0 at System.Drawing.ColorConverter.ConvertFrom
(ITypeDescriptorContext context, System.Globalization.CultureInfo
culture, System.Object value) [0x00000] in :0 at
System.ComponentModel.TypeConverter.ConvertFrom (System.Object o)
[0x00000] in :0 at
System.ComponentModel.TypeConverter.ConvertFromString (System.String
text) [0x00000] in :0 at
System.Drawing.ColorTranslator.FromHtml (System.String htmlColor)
[0x00000] in :0 at
Mono.TextEditor.Highlighting.ColorScheme.GetColorFromString
(System.String colorString) [0x001c0] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/ColorScheme.cs:578
at Mono.TextEditor.Highlighting.ColorScheme.SetChunkStyle
(System.String name, System.String weight, System.String foreColor,
System.String backColor) [0x00038] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/ColorScheme.cs:514
at Mono.TextEditor.Highlighting.ColorScheme.ReadStyleTree
(System.Xml.XmlReader reader, Mono.TextEditor.Highlighting.ColorScheme
result, System.String curName, System.String curWeight, System.String
curColor, System.String curBgColor) [0x000b8] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/ColorScheme.cs:599
at
Mono.TextEditor.Highlighting.ColorScheme+c__AnonStorey32.<>m__43
() [0x000e0] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/ColorScheme.cs:625
at
Mono.TextEditor.Highlighting.XmlReadHelper+c__AnonStorey19.<>m__D
(Mono.TextEditor.Highlighting.ReadCallbackData data) [0x00000] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/XmlReadHelper.cs:55
at Mono.TextEditor.Highlighting.XmlReadHelper.ReadList
(System.Xml.XmlReader reader, ICollection1 endNodes,
Mono.TextEditor.Highlighting.ReaderCallbackWithData callback)
[0x0008b] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/XmlReadHelper.cs:91
at Mono.TextEditor.Highlighting.XmlReadHelper.ReadList
(System.Xml.XmlReader reader, ICollection1 endNodes,
Mono.TextEditor.Highlighting.ReaderCallback callback) [0x0000d] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/XmlReadHelper.cs:54
at Mono.TextEditor.Highlighting.XmlReadHelper.ReadList
(System.Xml.XmlReader reader, System.String endNode,
Mono.TextEditor.Highlighting.ReaderCallback callback) [0x00000] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/XmlReadHelper.cs:50
at Mono.TextEditor.Highlighting.ColorScheme.LoadFrom
(System.Xml.XmlReader reader) [0x00018] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/ColorScheme.cs:615
at Mono.TextEditor.Highlighting.SyntaxModeService.LoadStyle
(System.String name) [0x0003c] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/SyntaxModeService.cs:111
--- End of inner exception stack trace --- at Mono.TextEditor.Highlighting.SyntaxModeService.LoadStyle
(System.String name) [0x00053] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/SyntaxModeService.cs:113
at Mono.TextEditor.Highlighting.SyntaxModeService.GetColorStyle
(System.String name) [0x0002c] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor.Highlighting/SyntaxModeService.cs:83
at Mono.TextEditor.TextEditorOptions.GetColorStyle () [0x00000] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor/TextEditorOptions.cs:492
at MonoDevelop.SourceEditor.StyledSourceEditorOptions.GetColorStyle ()
[0x00000] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/StyledSourceEditorOptions.cs:192
at Mono.TextEditor.TextArea.OptionsChanged (System.Object sender,
System.EventArgs args) [0x00038] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor/Gui/TextArea.cs:685
at Mono.TextEditor.TextArea.set_Options (ITextEditorOptions value)
[0x00066] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor/Gui/TextArea.cs:157
at Mono.TextEditor.TextEditor.set_Options (ITextEditorOptions value)
[0x00000] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/Mono.Texteditor/Mono.TextEditor/Gui/TextEditor.cs:414
at MonoDevelop.SourceEditor.ExtensibleTextEditor..ctor
(MonoDevelop.SourceEditor.SourceEditorView view) [0x00028] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/ExtensibleTextEditor.cs:75
at MonoDevelop.SourceEditor.SourceEditorWidget..ctor
(MonoDevelop.SourceEditor.SourceEditorView view) [0x00077] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorWidget.cs:284
at MonoDevelop.SourceEditor.SourceEditorView..ctor () [0x000ca] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs:189
at MonoDevelop.SourceEditor.SourceEditorDisplayBinding.CreateContent
(FilePath fileName, System.String mimeType,
MonoDevelop.Projects.Project ownerProject) [0x00000] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorDisplayBinding.cs:94
at MonoDevelop.Ide.Gui.LoadFileWrapper.Invoke (System.String fileName)
[0x00033] in
/home/builduser/buildslave/monodevelop/build/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/Workbench.cs:1182
What am I doing wrong here?
using System.Web.Script.Serialization;
string json = "{\"numbers\":[{\"one\":\"1\"},{\"two\":\"2\"},{\"three\":\"3\"}]}";
dynamic dictionary = new JavaScriptSerializer().Deserialize<dynamic>(json);
Assert.AreEqual(3, dictionary["numbers"].Count);
System.NullReferenceException : Object reference not set to an instance of an object
at System.Web.Script.Serialization.JavaScriptSerializer.ConvertToObject (IDictionary`2 dict, System.Type type) [0x00000] in <filename unknown>:0
at System.Web.Script.Serialization.JavaScriptSerializer.ConvertToType (System.Type type, System.Object obj) [0x00000] in <filename unknown>:0
at System.Web.Script.Serialization.JavaScriptSerializer.ConvertToList (System.Collections.ArrayList col, System.Type type) [0x00000] in <filename unknown>:0
at System.Web.Script.Serialization.JavaScriptSerializer.ConvertToType (System.Type type, System.Object obj) [0x00000] in <filename unknown>:0
at System.Web.Script.Serialization.JavaScriptSerializer.ConvertToObject (IDictionary`2 dict, System.Type type) [0x00000] in <filename unknown>:0
at System.Web.Script.Serialization.JavaScriptSerializer.ConvertToType (System.Type type, System.Object obj) [0x00000] in <filename unknown>:0
at System.Web.Script.Serialization.JavaScriptSerializer.ConvertToType[Object] (System.Object obj) [0x00000] in <filename unknown>:0
at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize[Object] (System.String input) [0x00000] in <filename unknown>:0
As I see no problems with your code, apart from the use of the count property, and since the code is breaking when the json is being deserialized, I would advise you to use the static type definition instead, just to narrow the changes of problems with your code:
string json = "{\"numbers\":[{\"one\":\"1\"},{\"two\":\"2\"},{\"three\":\"3\"}]}";
var dictionary = new JavaScriptSerializer().Deserialize<Dictionary<string, object>>(json);
Maybe just maybe there is an issue with using dynamic types with the JavaScriptSerializer and if there is indeed a problem with the JavaScriptSerializer you can always report that to MSFT.
Since I could not make Dictionary<string, object> work, I've decided to drop it and use static types instead. BTW, this online tool is quite handy for generating C# classes from JSON.