I'm having some trouble with populating a pie chart in my WP7 project. At the moment, my code is as follows below. I've tried a few different ways to bring the data back from an xml web service but no luck. Can anyone see what I have done wrong?
The error I'm getting right now is, "Cannot implicitly convert type 'System.Collections.Generic.IEnumerable' to 'System.Xml.Linq.XElement'. An explicit conversion exists (are you missing a cast?)"
XDocument XDocument = XDocument.Load(new StringReader(e.Result));
XElement Traffic = XDocument.Descendants("traffic").First();
XElement Quota = XDocument.Descendants("traffic").Attributes("quota");
ObservableCollection<PieChartItem> Data = new ObservableCollection<PieChartItem>()
{
new PieChartItem {Title = "Traffic", Value = (double)Traffic},
new PieChartItem {Title = "Quota", Value = (double)Quota},
};
pieChart1.DataSource = Data;
my guess is this line has the compile error:
XElement Quota = XDocument.Descendants("traffic").Attributes("quota");
the result of Descendants("traffic") is an IEnumerable, not an XElement. in the line above that you're already getting First of that enumerable, which is the item you want, isn't it?
the quota line should be:
XElement Quota = Traffic.Attributes("quota");
Style wise, most people make local variables lower cased, like traffic and quota and data to distinguish them from class level properties and members.
Update: it looks like Attributes("quota") returns IEnumerable<XAttribute>, so that quota line should be:
XAttribute Quota = Traffic.Attributes("quota").FirstOrDefault();
or to simplify:
var traffic = XDocument.Descendants("traffic").First();
var quota = traffic.Attributes("quota").FirstOrDefault();
I don't want to be mean, but fixing compiler errors like this should be something you shouldn't have to come to stackoverflow for. The compiler error itself is telling you what the problem is: the method returns a type other than what you said it does. Using var can simplify some of that.
Related
I am using NEST for Elasticsearch 6 and would like to get the number of documents for the default index.
The documentation refers to the 1.1 version of the API which no longer seems to work.
I have created the connection settings using a default index:
var connectionSettings = new ConnectionSettings().DefaultIndex("test_docs");
When I try the code from the 1.1 api documentation:
var result = client.Count();
I get the following error:
The type arguments for method
'ElasticClient.Count(Func, ICountRequest>)'
cannot be inferred from the usage. Try specifying the type arguments
explicitly.
When I supply a type it is appended to the path. For example:
client.Count<TestDocument>();
Generates a URL of http://localhost:9200/test_docs/testdocument/_count when what I really need is http://localhost:9200/test_docs/_count
For those needing the new way of doing this (like myself). I would use the following to get a count from a specific index.
var countRequest = new CountRequest(Indices.Index("videos"));
long count = (await _ecClient.CountAsync(countRequest)).Count;
You can use
var countResponse = client.Count<TestDocument>(c => c.AllTypes());
which will call the API
GET http://localhost:9200/test_docs/_count
In attempting to merge contacts in Microsoft CRM, I am using the following code -
//c1ID and c2ID are GUIDs of duplicated contacts.
EntityReference target = new EntityReference();
target.LogicalName = Contact.EntityLogicalName;
target.Id = c2ID;
MergeRequest merge = new MergeRequest();
// SubordinateId is the GUID of the account merging.
merge.SubordinateId = c1ID;
merge.Target = target;
merge.PerformParentingChecks = true;
Contact updater = new Contact();
Contact updater2 = new Contact();
updater = (Contact)xrmSvc.ContactSet.Where(c => c.ContactId.Equals(c1ID)).First();
updater2 = (Contact)xrmSvc.ContactSet.Where(c => c.ContactId.Equals(c2ID)).First();
MergeResponse mergedR = (MergeResponse)xrmSvc.Execute(merge);
When I try my Execute call here,I get this error -
Cannot specify child attributes in the columnset for Retrieve. Attribute: owneridname.
Am I not setting something correctly?
Having updatecontent does not change the issue. In fact, I get the error on lookups entered into the updatecontent. I find you have to build new entityreferences:
if (match.Contains("new_mostrecentcampaign"))
master["new_mostrecentcampaign"] =
new EntityReference(match.GetAttributeValue<EntityReference>("new_mostrecentcampaign").LogicalName
, match.GetAttributeValue<EntityReference>("new_mostrecentcampaign").Id);
...
Merge.UpdateContent = master
...
I realize this is a pretty old question, but for those of you who have run into the same issue in 2021 and beyond, here's the reason this error happens.
TL;DR: Ensure the EntityReference values for the attributes does not specify the Name property.
Explanation:
Everything that gets added to the Entity set to UpdateContent will be applied to the Target contact. When programmatically executing a MergeRequest within a plugin/workflow, the attributes of the UpdateContent get applied (as desired).
Where this breaks down is for EntityReference value types (lookups). The internal Microsoft code that performs this operation tries to interpret all properties of the EntityReference object, including Name.
So when the existing values from the SubordinateId contact are pulled using IOrganizationService.Retrieve (to dynamically get the latest version), the Name property is automatically set for those lookup attributes (the child record). This operation is not valid, even though it's not the user code that's directly executing it.
This brings us full circle to explain the original error:
Cannot specify child attributes in the columnset for Retrieve
I wish I had some documentation for this, but although the official documentation notes that the UpdateContent is optional, experience proves that it is in fact necessary. In the MergeRequests I've tested, I always include that property in the request, and there's a post in the MSDN forums for Dynamics 3.0 that suggests the same.
In fact, when I try to merge two contacts in my org without UpdateContent assigned, I actually get a FaultException saying the following:
Required field 'UpdateContent' is missing
Even though the documentation says it's optional!
So I'd suggest populating the UpdateContent property with something as in the below and see if that works:
var merge = new MergeRequest
{
// SubordinateId is the GUID of the account merging.
SubordinateId = c1ID,
Target = target,
PerformParentingChecks = true,
UpdateContent = new Contact()
};
Hi I been searching for my error but I can't find anything that help me. The problem is this. I been working with Subsonic 3, Newtonsoft Json and the linq way of write so I have this easy query:
var found = from client in newclients.All() where client.Period == "sometext" select client;
string periodoJSON = JsonConvert.SerializeObject(periodoFound); //this get "Self referencing loop Exception"
the problem is when I run this script I get the horrible exception "Self referening loop exception" in the JsonConvert line, subsonic have all the objects without any problem but if I do the following.
var found = from client in newclients.All() where client.Period == "sometext" select new client{client.Name, client.LastName, etc};
string periodoJSON = JsonConvert.SerializeObject(periodoFound);
I get the object serialize with a any problem with all the properties. I'm doing the last way because I have to finish my work but is any other way or solution for this problem, if not I will have to write all the properties every time I want to get a full table properties.
hope any can solve my problem o help me in the path for find a solution....
what I have is a really basic query with linq and I try the three values for JsonSerializerSettings and any work, again I'm working with subsonic 3 this not happend either with subsnoic 2 and I can make it work if I specify one by one the properties of the object in the linq query does any have any clue of what is happend, ANY more help would be great!!! If I put the value of Serialize my page get crazy and in a infinity loop state, if I decide for error simple doesn't work and Ignore nothing happen... some more information about this self referencia loop?
var u = usuario.SingleOrDefault(x => x.TipoUsuario == "A" || x.TipoUsuario == "W");
JsonSerializerSettings setting = new JsonSerializerSettings();
setting.ReferenceLoopHandling = ReferenceLoopHandling.Error; //.Serialize .Ignore
Page.ClientScript.RegisterClientScriptBlock(this.GetType(),"usuario", "var usuario=" + JsonConvert.SerializeObject(u, Formatting.None, setting) + ";");
Update ------
I code the following
string jsU = JsonConvert.SerializeObject(u,Formatting.None,new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.Objects, ReferenceLoopHandling = ReferenceLoopHandling.Ignore });
and is workign but the only thing wrongs is that in the json object comes all the information about the columns of subsonic 3 and a BIG chunk of text explain it... does any one know how to not SEND this part of the object??
Without knowing more about you object model it is hard to provide a definitive answer, but I would take a look at the ReferenceLoopHandling enum.
You're calling string SerializeObject(object value) on JsonConvert. Try the string SerializeObject(object value, Formatting formatting, JsonSerializerSettings settings) method instead. The JsonSerializerSettings settings parameter lets you set a bunch of things, including the ReferenceLoopHandling ReferenceLoopHandling { get; set; } property.
You can try these values:
public enum ReferenceLoopHandling
{
Error,
Ignore,
Serialize
}
Obviously, Error is the default and that's what you're getting. Perhaps one of the others will help.
I am using the Exchange Web Services Managed API to work with Tasks (Exchange 2007 SP1). I can create them fine. However, when I try to do updates, it works for all of the fields except for the .Body field. Whenever I try to access (read/update) that field, it gives the following error:
"You must load or assign this property before you can read its value."
The code I am using looks like this:
//impersonate the person whose tasks you want to read
Me.Impersonate(userName); //home-made function to handle impersonation
//build the search filter
Exchange.SearchFilter.SearchFilterCollection filter = New Exchange.SearchFilter.SearchFilterCollection();
filter.Add(New Exchange.SearchFilter.IsEqualTo(Exchange.TaskSchema.Categories, "Sales"));
//do the search
EWS.Task exTask = esb.FindItems(Exchange.WellKnownFolderName.Tasks, filter, New Exchange.ItemView(Integer.MaxValue));
exTask.Subject = txtSubject.Text; //this works fine
exTask.Body = txtBody.Text; //This one gives the error implying that the object isn't loaded
The strange thing is that, inspecting the property bag shows that the object contains 33 properties, but {Body} is not one of them. That property seems to be inherited from the base class .Item, or something.
So, do I need to re-load the object as type Item? Or reload it via .Bind or something? Keep in mind that I need to do this with thousands of items, so efficiency does matter to me.
Calling the Load method solved my problem :)
foreach (Item item in findResults.Items)
{
item.Load();
string subject = item.Subject;
string mailMessage = item.Body;
}
I had the same problem when using the EWS. My Code is requesting the events(Appointments) from the
Outlook calendar, at the end I couldn't reach to the body of the Event itself.
The missing point in my situation was the following "forgive me if there is any typo errors":
After gathering the Appointments, which are also derived from EWS Item Class, I did the following:
1- Create a List with the type Item:
List<Item> items = new List<Item>();
2- Added all appointments to items list:
if(oAppointmentList.Items.Count > 0) // Prevent the exception
{
foreach( Appointment app in oAppointmentList)
{
items.Add(app);
}
}
3- Used the exchanged service "I have already created and used":
oExchangeService.LoadPropertiesForItems(items, PropertySet.FirstClassProperties);
now if you try to use app.Body.Text, it will return it successfully.
Enjoy Coding and Best Luck
I forgot to mention the resource:
http://social.technet.microsoft.com/Forums/en-US/exchangesvrdevelopment/thread/ce1e0527-e2db-490d-817e-83f586fb1b44
He mentioned the use of Linq to save the intermediate step, it will help you avoid using the List items and save some memory!
RockmanX
You can load properties using a custom property set. Some properties are Extended properties instead of FirstClassProperties.
Little example:
_customPropertySet = new PropertySet(BasePropertySet.FirstClassProperties, AppointmentSchema.MyResponseType, AppointmentSchema.IsMeeting, AppointmentSchema.ICalUid);
_customPropertySet.RequestedBodyType = BodyType.Text;
appointment.Load(_customPropertySet);
I'm learning to use Crystal Reports (with VB 2005).
Most of what I've seen so far involves slurping data directly from a database, which is fine if that's all you want to display in the report.
My DB has a lot of foreign keys, so the way I've tried to stay sane with presenting actual information in my app is to add extra members to my objects that contain strings (descriptions) of what the foreign keys represent. Like:
Class AssetIdentifier
Private ID_AssetIdentifier As Integer
Private AssetID As Integer
Private IdentifierTypeID As Integer
Private IdentifierType As String
Private IdentifierText As String
...
Here, IdentifierTypeID is a foreign key, and I look up the value in a different table and place it in IdentifierType. That way I have the text description right in the object and I can carry it around with the other stuff.
So, on to my Crystal Reports question.
Crystal Reports seems to make it straightforward to hook up to records in a particular table (especially with the Experts), but that's all you get.
Ideally, I'd like to make a list of my classes, like
Dim assetIdentifiers as New List(Of AssetIdentifier)
and pass that to a Crystal Report instead of doing a tight link to a particular DB, have most of the work done for me but leaving me to work around the part that it doesn't do. The closest I can see so far is an ADO.NET dataset, but even that seems far removed. I'm already handling queries myself fine: I have all kinds of functions that return List(Of Whatever) based on queries.
Is there an easy way to do this?
Thanks in advance!
UPDATE: OK, I found something here:
http://msdn.microsoft.com/en-us/library/ms227595(VS.80).aspx
but it only appears to give this capability for web projects or web applications. Am I out of luck if I want to integrate into a standalone application?
Go ahead and create the stock object as described in the link you posted and create the report (StockObjectsReport) as they specify. In this simplified example I simply add a report viewer (crystalReportViewer1) to a form (Form1) and then use the following code in the Form_Load event.
stock s1 = new stock("AWRK", 1200, 28.47);
stock s2 = new stock("CTSO", 800, 128.69);
stock s3 = new stock("LTWR", 1800, 12.95);
ArrayList stockValues = new ArrayList();
stockValues.Add(s1);
stockValues.Add(s2);
stockValues.Add(s3);
ReportDocument StockObjectsReport = new StockObjectsReport();
StockObjectsReport.SetDataSource(stockValues);
crystalReportViewer1.ReportSource = StockObjectsReport;
This should populate your report with the 3 values from the stock object in a Windows Form.
EDIT: Sorry, I just realized that your question was in VB, but my example is in C#. You should get the general idea. :)
I'm loading the report by filename and it is working perfect:
//........
ReportDocument StockObjectsReport;
string reportPath = Server.MapPath("StockObjectsReport.rpt");
StockObjectsReport.Load(reportPath);
StockObjectsReport.SetDataSource(stockValues);
//Export PDF To Disk
string filePath = Server.MapPath("StockObjectsReport.pdf");
StockObjectsReport.ExportToDisk(ExportFormatType.PortableDocFormat, filePath);
#Dusty had it. However in my case it turned out you had to wrap the object in a list even though it was a single item before I could get it to print. See full code example:
string filePath = null;
string fileName = null;
ReportDocument newDoc = new ReportDocument();
// Set Path to Report File
fileName = "JShippingParcelReport.rpt";
filePath = func.GetReportsDirectory();
// IF FILE EXISTS... THEN
string fileExists = filePath +#"\"+ fileName;
if (System.IO.File.Exists(fileExists))
{
// Must Convert Object to List for some crazy reason?
// See: https://stackoverflow.com/a/35055093/1819403
var labelList = new List<ParcelLabelView> { label };
newDoc.Load(fileExists);
newDoc.SetDataSource(labelList);
try
{
// Set User Selected Printer Name
newDoc.PrintOptions.PrinterName = report.Printer;
newDoc.PrintToPrinter(1, false, 0, 0); //copies, collated, startpage, endpage
// Save Printing
report.Printed = true;
db.Entry(report).State = System.Data.Entity.EntityState.Modified;
db.SaveChanges();
}
catch (Exception e2)
{
string err = e2.Message;
}
}