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C# Cannot Convert From Int To Ref Int

When I create a dataset using VS2005, it creates a table adapter for me and the Fill method has and argument of type ref int?. Can someone explain this to me ? To help users navigate the site we have posted a user guide. Darren D. navigate here

I just finished reading this document, which was part of a link in the recent Buzz newsletter. This is complete: It's not really complete. ID; insted of int ID; it solves your problem. Similar topics type argument in OpenRecordset method reference type as template argument "Virtual functions allow polymorphism on a single argument" ? https://social.msdn.microsoft.com/Forums/vstudio/en-US/e58df94c-e058-4df9-8a33-1d88b2598ae8/cannot-convert-from-ref-int-to-ref-int?forum=csharpgeneral

The // function can use the value but not change it. // arg2 is a REFERENCE to a value type, so the function // should be able to use the value In the example below the caller is sending a type “DerivedClass” but the function being called is only required to return a type of “BaseClass” so you can see how this Post your question and get tips & solutions from a community of 418,747 IT Pros & Developers. Result = objResults.GetEnumerator(); while (Result.MoveNext()) { if(Result.Current is MapPoint.Location) { Loc = (MapPoint.Location)Result.Current; if(Loc.StreetAddress != null) Console.WriteLine(Loc.StreetAddress.Value); } } It would help if you'd give us a full program.

Yes, but that could not compile :( 'cannot convert from int to ref object'. Is this way not setting up stack frames over and over again in a loop, or is this no matter in NET ? Vienna, Virginia | Privacy Policy | Webmaster Cookies help us deliver our services. Awards Quality Pledge Free Resources from FMS Latest Newsletter Demos Microsoft Access Developer Help Center Microsoft Access Query Help Center MS Access to SQL Server Upsizing Microsoft Outlook Tips Technical Papers

Here is the function in C++ (member of testclass) - this compiles to a DLL without error in C++: int test_function(int arg1, int^ arg2) { int result; // arg1 is a Chances are you can just use objResults[0] from C#, but as we don't know what objResults are from your post, that's just a guess. C# Error: Cannot convert 'Object' to 'Ref Object' Provided by: FMS Development Team In this example, with working with the Word 10.0 Object model, the method PrintOut requires the parameters to You could use "if (o is MapPoint.Location)" and then cast, but using "as" is cheaper (because it only needs to do the test once).

If you remove the ref keyword, it compiles, but the changes you make in foo() are lost... Try changing the signature of foo to: private void foo(ref T aIInterfaceA) where T : NamespaceA.ClassA.IInterfaceA { aIInterfaceA.Property = "SomeValue"; } share|improve this answer answered Nov 25 '15 at 23:42 Saintali Take a look at C# : Why doesn't 'ref' and 'out' support polymorphism? Instead make your count variable an int?.

jeev · Aug 06, 2013 at 02:47 PM 0 Share First, BitStream.Serialize doesn't have a overload method including a "ref" parameter. https://bytes.com/topic/c-sharp/answers/813181-argument-type-ref-int How to Pass an COLLECTION as an Argument to a Procedure (PART 2) argument contravariance Browse more C# / C Sharp Questions on Bytes Question stats viewed: 4855 replies: 4 date instead: int? rgds, Wilfried Nov 16 '05 #4 P: n/a Wilfried Mestdagh Hi, I found out (reading some other likewise questions) how, but dont understeand wy you can in VB just do objResults.Item(0).etc..

When I create a dataset using VS2005, it creates a table adapter for me and the Fill method has and argument of type ref int?. check over here Join them; it only takes a minute: Sign up Passing implementations by ref: cannot convert from 'Foo' to 'ref IFoo' up vote 6 down vote favorite 1 Can someone explain to When I try to call the Fill method it prompts an error and says cannot convert ref int to ref int?. The serializable thing is not an issue.

By: Raj Parmar on July 17, 2008 at 06:40 Reply hi this is vadluri sreenu, you should delcare ID like this. And why do I inherit of Monobehaviour? I had to change int newPropertyImageId to int? his comment is here Sign in Gallery MSDN Library Forums Get started for free Ask a question Quick access Forums home Browse forums users FAQ Search related threads Remove From My Forums Answered by: cannot

To provide the correct type for the Word PrintOut() method, create a local OBJECT variable and assign it to the parameter being passed in the function. I need to be able to pass a reference to a value type (like an int) so that the function can change the value - just like passing a pointer to It would help if you'd give us a full program.

How can I prove its value?

I'm sorry. Linux questions C# questions ASP.NET questions fabric questions SQL questions discussionsforums All Message Boards... Decorator for Enforcing Argument Types Variable Argument Functions Webmethod Accepting XmlDocument as argument, with WSDL reflecting Passing function pointer as argument to a function??? Jun 27 '08 #3 P: n/a Jon Skeet [C# MVP] On Jun 3, 3:47 pm, "[email protected]"

I did not want to change the dataset. Here is the function in C++ (member of testclass) - this compiles to a DLL without error in C++: int test_function(int arg1, int^ arg2) { int result; // arg1 is a result = arg1 + *arg2; *arg2 = 1234; return( result ); } I use the DLL from C# so I can call the function. weblink Comment Add comment · Share 10 |3000 characters needed characters left characters exceeded â–¼ Viewable by all users Viewable by moderators Viewable by moderators and the original poster Advanced visibility Viewable

Change your definition of intResult to int? Post your question and get tips & solutions from a community of 418,747 IT Pros & Developers. Could I work as a Professor in Europe if I only speak English? Does anyone know how should I call this Fill method?

Notify me of new posts via email. what you're calling the method with) has to match the parameter type (i.e.

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