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  • SvcUtil and /dconly generates XSD's for data types NOT marked with the DataContract attribute.

    - by Bellerephon
    Has anyone ever encountered a problem with Svcutil and the /dconly option where it generates metadata for EVERY data type in an Assembly, even if it is NOT marked with with the [DataContract()] attribute? It also appears to be generating metadata for types only referenced in the code, such as XmlDictionaryReaderQuotas even though these are not a part of the physical assembly that I generated metadata on. Some info: Using the .NET 4.0 version of SvcUtil. Does not matter if class is empty or not. No references are specified in the command line for SvcUtil. Command line: "C:\In Progress Work (Prospective)\Prospective Server\Prospective Server\Management\Prospective.Server.Server.NET40.Debug.AnyCPU.dll" /nologo /t:metadata /d:"C:\In Progress Work (Prospective)\Prospective Server\Prospective Server\Management" /dconly

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  • C++: How to use types that have not been defined?

    - by Jen
    C++ requires all types to be defined before they can be used, which makes it important to include header files in the right order. Fine. But what about my situation: Bunny.h: class Bunny { ... private: Reference<Bunny> parent; } The compiler complains, because technically Bunny has not been completely defined at the point where I use it in its own class definition. This is not sufficient: class Bunny; class Bunny { ... private: Reference<Bunny> parent; } Apart from re-writing my template class Reference so it takes a pointer type (in which case I can use the forward declaration of Bunny), I don't know how to solve this. Any suggestions?

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  • Why are Java primitive types' modifiers `public`, `abstract`, & `final`?

    - by oconnor0
    In the process of doing some reflection on Java types, I came across an oddity that I do not understand. Inspecting int for its modifiers returns public, abstract, and final. I understand public and final, but the presence of abstract on a primitive type is non-obvious to me. Why is this the case? Edit: I am not reflecting on Integer but on int: import java.lang.reflect.Modifier; public class IntegerReflection { public static void main(final String[] args) { System.out.println(String.format("int.class == Integer.class -> %b", int.class == Integer.class)); System.out.println(String.format("int.class modifiers: %s", Modifier.toString(int.class.getModifiers()))); System.out.println(String.format("Integer.class modifiers: %s", Modifier.toString(Integer.class.getModifiers()))); } } The output when run: int.class == Integer.class -> false int.class modifiers: public abstract final Integer.class modifiers: public final

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  • How can I check the type of an object against a list of types?

    - by RookieRick
    Given a collection IEnumerable<Type> supportedTypes What's the best way to check whether a given object is one of those types (or a derived type)? My first instinct was to do something like: // object target is a parameter passed to the method in which I'm doing this. if (supportedTypes.Count( supportedType => target is supportedType ) > 0) { // Yay my object is of a supported type!!! } ..but that doesn't seem to be working. Can I not use the "is" keyword in a lambda expression like this?

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  • Which file types are worth compressing (zipping) for remote storage? For which of them the compresse

    - by user193655
    I am storing documents in sql server in varbinary(max) fileds, I use filestream optionally when a user has: (DB_Size + Docs_Size) ~> 0.8 * ExpressEdition_Max_DB_Size I am currently zipping all the files, anyway this is done because the Document Read/Write work was developed 10 years ago where Storage was more expensive than now. Many files when zipped are almost as big as the original (a zipped pdf is about 95% of original size). And anyway unzipping has some overhead, that becomes twice when I need also to "Check-in"/Update the file because I need to zip it. So I was thinking of giving to the users the option to choose whether the file type will be zipped or not by providing some meaningful default values. For my experience I would impose the following rules: 1) zip by default: txt, bmp, rtf 2) do not zip by default: jpg, jpeg, Microsoft Office files, Open Office files, png, tif, tiff Could you suggest other file types chosen among the most common or comment on the ones I listed here?

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  • Would it be useful to change java to support both static and dynamic types?

    - by James A. N. Stauffer
    What if a Java allow both static and dynamic types. That might allow the best of both worlds. i.e.: String str = "Hello"; var temp = str; temp = 10; temp = temp * 5; Would that be possible? Would that be beneficial? Do any languages currently support both and how well does it work out? Here is a better example (generics can't be used but the program does know the type): var username = HttpServletRequest.getSession().getAttribute("username");//Returns a String if(username.length() == 0) { //Error }

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  • Why are types found on an imported namepace but not on a fully qualified namespace after retargeting the framework?

    - by Paul Ferguson
    We've just re-targeted a VB.NET project from .Net 2.0 to 3.5. Various framework types are now missing from our project. Wherever the type is referenced using a fully qualified namespace it's missing. If the relevant namespace is imported for the type; it's found. For example, this doesn't find the type Object, with compiler error "System.Object is not defined.": Public Class Foo Inherits System.Object End Class However, this works ok: Imports System Public Class Foo Inherits [Object] End Class I've already tried re-opening the solution with no success.

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  • Java: Is it possible to have a generic class that only takes types that can be compared?

    - by mr popo
    I wanted to do something along the lines of: public class MyClass<T implements Comparable> { .... } But I can't, since, apparently, generics only accept restrictions with subclasses, and not interfaces. It's important that I'm able to compare the types inside the class, so how should I go about doing this? Ideally I'd be able to keep the type safety of Generics and not have to convert the T's to Object as well, or just not write a lot of code overall. In other words, the simplest the better.

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  • EntityFramework 4.0: can you return different types depending on data in the database?

    - by user200341
    I have a Media table in the database. I also have an IMedia interface. I have two different media types that implements the same interface: 1) AudioMedia 2) PictureMedia What I wonder here, is if I can use EntityFramework (I'm using an EDMX file but I have my models in a separate library, with automatic code generation turned off), and depending on the data in the database, select what type to get (AutioMedia or PictureMedia). Since they are both implementing the same interface (could be changed to an abstract class if needed I suppose), I'm thinking that somewhere along the way you could specify what class it should be. I should perhaps point out that I have a class that inherits from ObjectContext to access the objects. Perhaps there is something that that can be done?

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  • How does make_pair know the types of its args?

    - by bobobobo
    The definition for make_pair in the MSVC++ "utility" header is: template<class _Ty1, class _Ty2> inline pair<_Ty1, _Ty2> make_pair(_Ty1 _Val1, _Ty2 _Val2) { // return pair composed from arguments return (pair<_Ty1, _Ty2>(_Val1, _Val2)); } I use make_pair all the time though without putting the argument types in angle brackets: map<string,int> theMap ; theMap.insert( make_pair( "string", 5 ) ) ; Shouldn't I have to tell make_pair that the first argument is std::string and not char* ? How does it know?

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  • Is it possible to have file filters for multiple extension types?

    - by Jon Cage
    I'm using a standard Windows FileDialog to allow the user to select some files. I'd like to filter out only the file types I'm interested in though (lets call them *.a and *.b). Is there any way to do this without using *.*? I've tried the following but it fails to match any files at all: this->openFileDialog1->DefaultExt = L"*.a,*.b"; this->openFileDialog1->FileName = L"openFileDialog1"; this->openFileDialog1->Filter = L"My Data Files (*.a,*.b)|*.a,*.b";

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  • Will having 2 MX records pointing to different mail server types cause delivery issues?

    - by Lyken
    I've inherited a setup where the mail server is exchange 2010. For some reason, I'm not sure why there is 2 MX records setup. One being the exchange server which is the higher priority while the external (non-exchange) server is the secondary mx record. I don't believe this was done for redundancy reasons as the other mail server is not set to route mail back to the exchange server (it's just the webhosts email for their hosting) The client has been experiencing disappearing email, however after my investigations its not actually disappearing, but exchange is successfully receiving the mail and then passing it on to the external server. It isn't happening all the time, just with some email messages from some domains. My question: Is exchange passing the mail on because it can see the secondary MX record and is configured (somewhere) to send mail out? If so, how do I stop it? Is it as easy as just removing the second MX record pointing to the external mail server and exchange will stop passing mail on? I'm not exchange expert so I'm kinda stumped. Exchange MX tools are saying everything is setup and configured correctly from an external point of view.

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  • Is it generally a bad idea to have other types of virtual appliances installed along side a firewall

    - by MGSoto
    I want to run my Firewall/NAT software (pfsense) and an internal NAS (looking at freenas right now) for my SOHO on one machine. Right now I have them separated on two different machines, but I'd like to consolidate them. Is this generally a bad idea? I see the security concern where if the firewall or host OS is compromised, then your data is essentially screwed. But is it really a concern for me?

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  • Why are there two types of Adobe Flash Player download / update?

    - by w3d
    Adobe Flash Player checks for updates at startup. If updates are required the Adobe dialog pops up with a [Download] button. Usually when I hit the [Download] button it downloads it straight away with a progress bar that zips across the dialog. I then get the option to install it. All good. However, sometimes when I hit the [Download] button it takes me to the website: https://get3.adobe.com/flashplayer/update/plugin/ Which presents me with an [Update now] button (and to install McAfee!). What is this for? Why didn't it download and install in the "usual" way? So, why are there apparently two different update methods for what appears to be the same thing? One is nice and swish and integrated into the updater, the other more long winded. In fact, I don't [Update now] when it takes me to the website, because I'm like "Hey, what's this?!"

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  • Is there a faster way to change default apps associated with file types on OS X?

    - by Lri
    Is there anything more convenient than using RCDefaultApp or Magic Launch, or just repeatedly pressing the Change All buttons in Finder's information panels? I thought about writing a shell script that would modify the CFBundleDocumentTypes arrays in Info.plist files. But each app has multiple keys (sometimes an icon) that would need to be changed. lsregister can't be used to make specific modifications to the Launch Services database. $ `locate lsregister` -h lsregister: [OPTIONS] [ <path>... ] [ -apps <domain>[,domain]... ] [ -libs <domain>[,domain]... ] [ -all <domain>[,domain]... ] Paths are searched for applications to register with the Launch Service database. Valid domains are "system", "local", "network" and "user". Domains can also be specified using only the first letter. -kill Reset the Launch Services database before doing anything else -seed If database isn't seeded, scan default locations for applications and libraries to register -lint Print information about plist errors while registering bundles -convert Register apps found in older LS database files -lazy n Sleep for n seconds before registering/scanning -r Recursive directory scan, do not recurse into packages or invisible directories -R Recursive directory scan, descending into packages and invisible directories -f force-update registration even if mod date is unchanged -u unregister instead of register -v Display progress information -dump Display full database contents after registration -h Display this help

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  • Formatting not retained in paste from Ditto (clipboard manager). Plain text pasted instead [Solved] Add supported types

    - by Jeff Kang
    I'm trying to use Ditto on the Ditto documentation. If I were to copy the table of contents, then paste it (without Ditto) to the word processor, I get http://i.imgur.com/V1GU3.png, and the formatting is maintained. As as a result of the copy operation, the table of contents also goes into the Saved Items List (= History List = Lists the Clips saved from the Clipboard) in Ditto’s Main Window: I open a blank document to paste from Ditto instead of the default clipboard, and press either Ctrl-`, the default Ditto window activation Global Hot Key, or click the tray icon. From this point, I can do 3 things to close the Ditto window, and place the item on the clipboard (the default clipboard?). Select the item, and press Enter Put the cursor on the item, and double-click Select the item, and press Ctrl-c 1) and 2) send a right-click where the cursor is, after the Ditto window closes (presumably to have the paste option ready to access?): Ctrl-c just closes the Ditto window. Whichever method is used, the contents are pasted in what I believe is plain text: http://i.imgur.com/mQAZH.png How do I keep the formatting that the default clipboard keeps? Thanks.

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  • Can I mix drive types in an HP server?

    - by Generic Error
    I currently have the following setup: HP DL380 G4 Server 6 x 73GB, Ultra160, 10k, SCSI 80 Pin Drives Smart Array 6i Controller RAID 5 One of the drives is failing and needs to be replaced. I have on hand drives that are the same size and type, but are Ultra320, 15k instead. I have verified that these drives work in another system with the same type of drive controller. When I plug one of these in the system simply reports the drive as being offline and has nothing further to do with it. From what I have read these drives should be compatable. Should this work at all and if so, what might be preventing it?

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  • Modifying value of "Rating" column within Explorer for arbitrary file types.

    - by Fake Name
    Basically, I have a large body of assorted media (text, images, flash files, archives, folders, etc...) and I'm attempting to organize it. Windows Explorer has a rating column, but there seems to be no way to modify the rating of the files short of opening them in their type-specific software (e.g. Media player, or Photo viewer). However, this does not work when the file is of an unsupported type (.rar, .swf ...), or a directory. I'd be more than willing to consider a file-manager replacement (I've alreadly looked at quite a few, Directory Opus, Total Commander, etc...), or even a solution that stores the rating metadata in a hidden file in each folder, or a separate database. The one real critical requirement is the ability to sort by rating, and being filetype-agnostic. Basically, is there any way to categorize a large collection of assorted files by rating that will work with any file type, including directories? - Ideally, there would be an easy way to add arbitrary columns to windows explorer, and edit them directly. However, there seems to be no way to do this. The rating column is the next best thing.

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  • Excel Macro Runtime error 428 in Excel 2003

    - by Adam
    Hi I have created a xlt excel template which works fine in Excel 2007 under compatibility mode and shows no errors on compatibility check. The template runs a number of Macros which creates pivot tables and charts. When a colleague tries to run the same xlt on excel 2003 they get a Runtime error 428 (Object does not support this property or method). The runtime error fails at this point; ActiveWorkbook.PivotCaches.Create(SourceType:=xlDatabase, SourceData:= _ "raw!R1C1:R65536C37", Version:=xlPivotTableVersion10).CreatePivotTable _ TableDestination:="Frontpage!R7C1", TableName:="PivotTable2", _ DefaultVersion:=xlPivotTableVersion10 Any help would be appreciated. This is the full Macro; Sub Auto_Open() ' ' ImportData Macro ' Macro to import data, Data must be in your local D: Drive and named raw.csv ' ' Sheets("raw").Select With ActiveSheet.QueryTables.Add(Connection:= _ "TEXT;d:\raw.csv", Destination:=Range _ ("$A$1")) .Name = "raw_1" .FieldNames = True .RowNumbers = False .FillAdjacentFormulas = False .PreserveFormatting = True .RefreshOnFileOpen = False .RefreshStyle = xlInsertDeleteCells .SavePassword = False .SaveData = True .AdjustColumnWidth = True .RefreshPeriod = 0 .TextFilePromptOnRefresh = False .TextFilePlatform = 850 .TextFileStartRow = 1 .TextFileParseType = xlDelimited .TextFileTextQualifier = xlTextQualifierDoubleQuote .TextFileConsecutiveDelimiter = False .TextFileTabDelimiter = False .TextFileSemicolonDelimiter = False .TextFileCommaDelimiter = True .TextFileSpaceDelimiter = False .TextFileColumnDataTypes = Array(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, _ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1) .TextFileTrailingMinusNumbers = True .Refresh BackgroundQuery:=False End With ' ' AddMonthColumn Macro ' ' Sheets("raw").Select Range("AK1").Select ActiveCell.FormulaR1C1 = "Month" Range("AK2").FormulaR1C1 = "=DATE(YEAR(RC[-36]),MONTH(RC[-36]),1)" LastRow = ActiveSheet.UsedRange.Rows.Count Range("AK2").AutoFill Destination:=Range("AK2:AK" & LastRow) Columns("AK:AK").EntireColumn.AutoFit Columns("AK:AK").Select Selection.NumberFormat = "mmmm" With Selection .HorizontalAlignment = xlCenter End With Columns("AK:AK").EntireColumn.AutoFit Selection.Copy Selection.PasteSpecial Paste:=xlPasteValues, Operation:=xlNone, SkipBlanks _ :=False, Transpose:=False ' ' Add Report Information [Text] ' Sheets("Frontpage").Select Range("A2:N2").Select Selection.Merge ActiveCell.FormulaR1C1 = "Service Activity Report" With Selection.Font .Size = 20 End With Range("A3:N3").Select Selection.Merge ActiveCell.FormulaR1C1 = InputBox("Customer Name") With Selection .HorizontalAlignment = xlCenter .VerticalAlignment = xlCenter End With Range("A4:N4").Select Selection.Merge ActiveCell.FormulaR1C1 = InputBox("Date Range dd/mm/yyyy - dd/mm/yyyy") With Selection .HorizontalAlignment = xlCenter .VerticalAlignment = xlCenter End With ' ' IncidentsbyPriority Macro ' ' Sheets("Frontpage").Select Range("A7").Select ActiveWorkbook.PivotCaches.Create(SourceType:=xlDatabase, SourceData:= _ "raw!R1C1:R65536C37", Version:=xlPivotTableVersion10).CreatePivotTable _ TableDestination:="Frontpage!R7C1", TableName:="PivotTable2", _ DefaultVersion:=xlPivotTableVersion10 Sheets("Frontpage").Select Cells(7, 1).Select ActiveSheet.Shapes.AddChart.Select ActiveChart.SetSourceData Source:=Range("Frontpage!$A$7:$H$22") ActiveChart.ChartType = xlColumnClustered With ActiveSheet.PivotTables("PivotTable2").PivotFields("Priority") .Orientation = xlRowField .Position = 1 End With ActiveSheet.PivotTables("PivotTable2").AddDataField ActiveSheet.PivotTables( _ "PivotTable2").PivotFields("Case ID"), "Count of Case ID", xlCount ActiveChart.Parent.Name = "IncidentsbyPriority" ActiveChart.ChartTitle.Text = "Incidents by Priority" Dim RngToCover As Range Dim ChtOb As ChartObject Set RngToCover = ActiveSheet.Range("D7:L16") Set ChtOb = ActiveSheet.ChartObjects("IncidentsbyPriority") ChtOb.Height = RngToCover.Height ' resize ChtOb.Width = RngToCover.Width ' resize ChtOb.Top = RngToCover.Top ' reposition ChtOb.Left = RngToCover.Left ' reposition ' ' IncidentbyMonth Macro ' ' Sheets("Frontpage").Select ActiveWorkbook.PivotCaches.Create(SourceType:=xlDatabase, SourceData:= _ "raw!R1C1:R65536C37", Version:=xlPivotTableVersion10).CreatePivotTable _ TableDestination:="Frontpage!R18C1", TableName:="PivotTable4", _ DefaultVersion:=xlPivotTableVersion10 Sheets("Frontpage").Select Cells(18, 1).Select ActiveSheet.Shapes.AddChart.Select ActiveChart.SetSourceData Source:=Range("Frontpage!$A$18:$H$38") ActiveChart.ChartType = xlColumnClustered With ActiveSheet.PivotTables("PivotTable4").PivotFields("Month") .Orientation = xlRowField .Position = 1 End With ActiveSheet.PivotTables("PivotTable4").AddDataField ActiveSheet.PivotTables( _ "PivotTable4").PivotFields("Case ID"), "Count of Case ID", xlCount ActiveChart.Parent.Name = "IncidentbyMonth" ActiveChart.ChartTitle.Text = "Incidents by Month" Dim RngToCover2 As Range Dim ChtOb2 As ChartObject Set RngToCover2 = ActiveSheet.Range("D18:L30") Set ChtOb2 = ActiveSheet.ChartObjects("IncidentbyMonth") ChtOb2.Height = RngToCover2.Height ' resize ChtOb2.Width = RngToCover2.Width ' resize ChtOb2.Top = RngToCover2.Top ' reposition ChtOb2.Left = RngToCover2.Left ' reposition ' ' IncidentbyCategory Macro ' ' Sheets("Frontpage").Select ActiveWorkbook.PivotCaches.Create(SourceType:=xlDatabase, SourceData:= _ "raw!R1C1:R65536C37", Version:=xlPivotTableVersion10).CreatePivotTable _ TableDestination:="Frontpage!R38C1", TableName:="PivotTable6", _ DefaultVersion:=xlPivotTableVersion10 Sheets("Frontpage").Select Cells(38, 1).Select ActiveSheet.Shapes.AddChart.Select ActiveChart.SetSourceData Source:=Range("Frontpage!$A$38:$H$119") ActiveChart.ChartType = xlColumnClustered With ActiveSheet.PivotTables("PivotTable6").PivotFields("Category 2") .Orientation = xlRowField .Position = 1 End With With ActiveSheet.PivotTables("PivotTable6").PivotFields("Category 3") .Orientation = xlPageField .Position = 1 End With ActiveSheet.PivotTables("PivotTable6").AddDataField ActiveSheet.PivotTables( _ "PivotTable6").PivotFields("Case ID"), "Count of Case ID", xlCount ActiveChart.Parent.Name = "IncidentbyCategory" ActiveChart.ChartTitle.Text = "Incidents by Category" Dim RngToCover3 As Range Dim ChtOb3 As ChartObject Set RngToCover3 = ActiveSheet.Range("D38:L56") Set ChtOb3 = ActiveSheet.ChartObjects("IncidentbyCategory") ChtOb3.Height = RngToCover3.Height ' resize ChtOb3.Width = RngToCover3.Width ' resize ChtOb3.Top = RngToCover3.Top ' reposition ChtOb3.Left = RngToCover3.Left ' reposition ' ' IncidentsbySiteandPriority Macro ' ' Sheets("Frontpage").Select Range("A71").Select ActiveWorkbook.PivotCaches.Create(SourceType:=xlDatabase, SourceData:= _ "raw!R1C1:R65536C37", Version:=xlPivotTableVersion10).CreatePivotTable _ TableDestination:="Frontpage!R71C1", TableName:="PivotTable3", _ DefaultVersion:=xlPivotTableVersion10 Sheets("Frontpage").Select Cells(71, 1).Select ActiveSheet.Shapes.AddChart.Select ActiveChart.SetSourceData Source:=Range("Frontpage!$A$71:$H$90") ActiveChart.ChartType = xlColumnClustered With ActiveSheet.PivotTables("PivotTable3").PivotFields("Site Name") .Orientation = xlRowField .Position = 1 End With With ActiveSheet.PivotTables("PivotTable3").PivotFields("Priority") .Orientation = xlColumnField .Position = 1 End With ActiveSheet.PivotTables("PivotTable3").AddDataField ActiveSheet.PivotTables( _ "PivotTable3").PivotFields("Case ID"), "Count of Case ID", xlCount ActiveChart.Parent.Name = "IncidentbySiteandPriority" ' ActiveChart.ChartTitle.Text = "Incidents by Site and Priority" Dim RngToCover4 As Range Dim ChtOb4 As ChartObject Set RngToCover4 = ActiveSheet.Range("H71:O91") Set ChtOb4 = ActiveSheet.ChartObjects("IncidentbySiteandPriority") ChtOb4.Height = RngToCover4.Height ' resize ChtOb4.Width = RngToCover4.Width ' resize ChtOb4.Top = RngToCover4.Top ' reposition ChtOb4.Left = RngToCover4.Left ' reposition Columns("A:G").Select Range("A52").Activate Columns("A:G").EntireColumn.AutoFit End Sub

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  • How to handle payment types with varying properties in the most elegant way.

    - by Byron Sommardahl
    I'm using ASP.NET MVC 2. Keeping it simple, I have three payment types: credit card, e-check, or "bill me later". I want to: choose one payment type display some fields for one payment type in my view run some logic using those fields (specific to the type) display a confirmation view run some more logic using those fields (specific to the type) display a receipt view Each payment type has fields specific to the type... maybe 2 fields, maybe more. For now, I know how many and what fields, but more could be added. I believe the best thing for my views is to have a partial view per payment type to handle the different fields and let the controller decide which partial to render (if you have a better option, I'm open). My real problem comes from the logic that happens in the controller between views. Each payment type has a variable number of fields. I'd like to keep everything strongly typed, but it feels like some sort of dictionary is the only option. Add to that specific logic that runs depending on the payment type. In an effort to keep things strongly typed, I've created a class for each payment type. No interface or inherited type since the fields are different per payment type. Then, I've got a Submit() method for each payment type. Then, while the controller is deciding which partial view to display, it also assigns the target of the submit action. This is not elegant solution and feels very wrong. I'm reaching out for a hand. How would you do this?

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  • How can I read a DBF file with incorrectly defined column data types using ADO.NET?

    - by Jason
    I have a several DBF files generated by a third party that I need to be able to query. I am having trouble because all of the column types have been defined as characters, but the data within some of these fields actually contain binary data. If I try to read these fields using an OleDbDataReader as anything other than a string or character array, I get an InvalidCastException thrown, but I need to be able to read them as a binary value or at least cast/convert them after they are read. The columns that actually DO contain text are being returned as expected. For example, the very first column is defined as a character field with a length of 2 bytes, but the field contains a 16-bit integer. I have written the following test code to read the first column and convert it to the appropriate data type, but the value is not coming out right. The first row of the database has a value of 17365 (0x43D5) in the first column. Running the following code, what I end up getting is 17215 (0x433F). I'm pretty sure it has to do with using the ASCII encoding to get the bytes from the string returned by the data reader, but I'm not sure of another way to get the value into the format that I need, other that to write my own DBF reader and bypass ADO.NET altogether which I don't want to do unless I absolutely have to. Any help would be greatly appreciated. byte[] c0; int i0; string con = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\ASTM;Extended Properties=dBASE III;User ID=Admin;Password=;"; using (OleDbConnection c = new OleDbConnection(con)) { c.Open(); OleDbCommand cmd = c.CreateCommand(); cmd.CommandText = "SELECT * FROM astm2007"; OleDbDataReader dr = cmd.ExecuteReader(); while (dr.Read()) { c0 = Encoding.ASCII.GetBytes(dr.GetValue(0).ToString()); i0 = BitConverter.ToInt16(c0, 0); } dr.Dispose(); }

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  • Why does C++ not allow multiple types in one auto statement?

    - by Walter
    The 2011 C++ standard introduced the new keyword auto, which can be used for defining variables instead of a type, i.e. auto p=make_pair(1,2.5); // pair<int,double> auto i=std::begin(c), end=std::end(c); // decltype(std::begin(c)) In the second line, i and end are of the same type, referred to as auto. The standard does not allow auto i=std::begin(container), e=std::end(container), x=*i; when x would be of different type. My question: why does the standard not allow this last line? It could be allowed by interpreting auto not as representing some to-be-decuded type, but as indicating that the type of any variable declared auto shall be deduced from its assigned value. Is there any good reason for the C++11 standard to not follow this approach? There is actually a use case for this, namely in the initialisation statement of for loops: for(auto i=std::begin(c), end=std::end(c), x=*i; i!=end; ++i, x+=*i) { ... } when the scope of the variables i, end, and x is limited to the for loop. AFAIK, this cannot be achieved in C++ unless those variables have a common type. Is this correct? (ugly tricks of putting all types inside a struct excluded) There may also be use cases in some variadic template applications.

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