.net - Alias In Function Declaration Overloaded?
Feb 24, 2009
I have some VB6 code that I am converting to VB.net and came across this section
Declare Function TmSendByLen Lib "tmctl.dll" Alias "TmSendByLength"(ByVal id As Integer, ByRef msg As Any, ByVal blen As Integer) As Integer
'snip'
[code]....
I have not come across the Alias term before but I can guess what it does. What I am unsure of is the reasoning behind overloading the alias. If that is what is happening.I need to create overloads for the TmSendByLen function as the 'As Any' is not supported in VB.net so I am not sure if I should just remove the alias or if I should leave it in place.
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May 10, 2011
What is the C# equivalent of this VB code?
Private Declare Auto Function InternetSetOption Lib "wininet.dll" (ByVal hInternet As IntPtr, ByVal dwOption As Integer, ByVal lpBuffer As IntPtr, ByVal lpdwBufferLength As Integer) As Boolean
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Mar 9, 2010
API is written in C++
typedef unsigned short MFSTATUS; // known as a WORD - 16 bits for sure
MIFAREAPI_API MFSTATUS MIFAREAPICC MF_ReadCardBlock( DWORD dwBlkAdr, DWORD dwRdrKey, DWORD dwKeyAB, DWORD dwRspBufSz, BYTE *pRspBuf );
HOW DO I TRANSLATE IT TO VB?
Declare Function MF_ReadCard Lib "MifareAPI.dll" Alias "MF_ReadCardBlock" (ByVal BlkAdr As Long, ByVal RdrKey As Long, ByVal KeyAB As Long, ByVal BuffSize As Long, ByRef buffer As Byte()) As Short
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Jun 21, 2011
I got problem regarding declaration of dynamic runtime array declaration Here is my code
[Code]...
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Nov 21, 2010
So Google's not a good choice for looking up examples for overloaded operators like "And" or "Or", because it tries to parse them as operators to the search query itself. MSDN also provides no examples of how to implement an overloaded And operator, so I'm not certain how to properly overload it for my project.Does anyone have an example of "And" at minimum? "Or" or "Xor" (or any others) would be a bonus. I'm not certain if I need to overload these operators in my objects just yet, as I'm still building them out and haven't planned beyond just yet. But having examples around that might get indexed by Google will probably help save the sanity of a lot of people...
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Jul 16, 2011
In this project I am making a grade calculator; I am modifying an existing code I have to have the following characteristics: I need to modify the DetermineGrade method so that it accepts the maximum number of points that can be earned on both tests (currently, the max number of points is 200: 100 points per test). For an A grade, the student must earn at least 90% of the total number of points. For a B, the student must earn at least 80%. For a C, at least 70%. For a D, at least 60%. If they earn less than 60% of the total points, then grade is F. Here is the exisint code I have for the DetermineGrade method specifically:
Public Sub DetermineGrade()
Dim intTotal As Integer
intTotal = _intScore1 + _intScore2
[code]......
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Jan 31, 2012
I'm working with a third-party library interfacing to an old database system. There's a method - CallProg that calls a "stored procedure" (for lack of a better translation - any Pick users in the crowd?). However, instead of doing something like this:
Public Sub CallProg(ProgName, ParamArray ProgArgs() As String)
...
End Sub
[code].....
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Mar 11, 2011
I have two computer. Both have VS2003, but on one of them, Navigate() is overloaded. Its either Navigate(string) or Navigate(string, ref obj, ref obj..and so on). But on my other computer, Navigate only has Navigate(string, ref obj, ref obj....)
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Oct 14, 2010
I have created a dialog as a winform and am calling that winform like this:
Dim dlgEditChangeOrder As New dgEditChangeOrder
Dim dlgResult As DialogResult
dlgResult = dlgEditChangeOrder.ShowDialog
pretty simple. I want to be able to set the visiblility of a control on the win form when the win form is called. I would like to do this as a constructor so I could write the following. Dim dlgEditChangeOrder As New dgEditChangeOrder(visibleIsTrue)
Can someone give me the contructor code to make this happen? The reason I am concerned is I dunno if its legal to do this inside a winform since the winform is loaded bby the precreated IntializeComponent() function
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May 24, 2011
I am looking for a little expert design insight.I am trying to save an overloaded property from a generic class.
Base Class
Public MustInherit Class BaseEvent
Public MustOverride ReadOnly Property IsWorkCalendar() As Boolean[code]....
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Jan 26, 2012
I tend to loath repetition in code, so when I come across a problem where the only different is types I tend to use generics. Coming from a C++ background I find vb.net's version to be rather frustrating, I know C++ has template specialization and I guess vb.net does notso what I have is a set of routines that do the exact same code regardless of type being passed.something like this
Public Sub decision(Of T)(ByVal a As T, ByVal b As Integer)
If b > 10 then
gt(a)
[code].....
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Nov 19, 2010
I have an abstract class in vb.net with two subclasses. In the abstract class I have a constuctor that looks like this:[code]I would like to create a second constructor that doesn't take any arguments and just initializes the args to default values.[code]When I attempt to create a new subclass using the second constructor the compiler complains that I'm missing two args to the constructor.Is there a reason I can't overload the constructor in the abstract class?
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Jan 18, 2012
[Code]...
Why is the first line not correct? What it wants is a System.Type and a System.String but refuses to work.
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Jan 11, 2010
As some of you may know i been working on an inventory program, for this part of the app the user enters an ID number and clicks search, the app searches for the ID and shows if it exists or not.
[Code]....
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Aug 21, 2011
I am using a sql server database and i am storing the time value in the datetime variable. I am developing a booking system application in vb.net. When I want to view already made bookings using datagridview and by implementing dataadapter and dataset...When the table is shown in the datagridview I want custom column names to be shown so tell me that how can i use alias in the query given in datadapter initialization part?
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Apr 3, 2012
I have an enum in one module that's used in another that has a long name:
Public Enum Enumwithaverylongname
foo
bar
end Enum
When I use it, I'd like to alias it to a shorter name like:
f.foo
instead of
Enumwithaverylongname.foo
Can I do that?
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Jan 27, 2012
Here's my SQL query:
SELECT EmployeeID, EmployeeLastName + ', ' + EmployeeFirstName AS Name
FROM employees
ORDER BY Name
How can I go about doing the something in LINQ to SQL?
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Aug 25, 2010
I have an object and I iterate over object's properties. Foreach property, i append it as a column to a listview.
In my object, some properties doesn't have accents. But in portuguese, they do. For example: "Endereco" property must be "Endereo".
I need an away to create an alias to the properties.
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Nov 13, 2011
I'm writing custom code in VS2005 Reports (SSRS / Report Builder). The code is working fine, but I have to make absolute references to assembly classes. For instance:For Each m As System.Text.RegularExpressions.Match In ...Is there any way to alias the reference to System.Text.RegularExpressions.Match, so that I can reuse it in a concise manner? I know in PHP, you'd do it like this:
use MyNamespace\MySubNamespace\MyClassVerboseName as MyClass
[...]
MyClass->MyMethod();
[code]......
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Aug 2, 2011
doesn't really matter? low priority.
[Code]...
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Apr 21, 2010
I am assigning the class object to grid's data source. And grid displaying all the properties of class with values. But i do not want to display the original name of properties of class. Is there any way to provide set alias name to property to display in grid?
I know that it can be possible by setting the grid's column caption. But i want to do it at class level or by other way instead of processing on Grid. Is there any attribute that set alias name to property?
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Mar 17, 2011
In my previous application using Linq2SQL I was able to overload constructors with parameters by doing this:
Namespace CoreDb
Partial Public Class Accomplishment
Public Sub New(ByVal accomplishmentTypeID As Object, ByVal description As String, ByVal title As String, ByVal applicableDate As DateTime, ByVal lastUpdatedBy As String)
[code]....
Basically using a partial class off the object, sharing the namespace of the .dbml file and calling the default constructor and then doing additional stuff. So then in my code I could do something like:
Dim accomplishment As New Accomplishment(id, description, title, applicableDate, lastUpdatedBy)
This seems to no longer work in Entity Framework as there is no default constructor to call.Does this no longer work? And if so what is a good alternative to implementing something like this?
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Jul 20, 2010
It seems that my library of extension methods that was written in VB.NET has problems.I have 2 overloaded extension methods Crop().When i reference the lib from a VB.NET project i see them. If reference it from a C# project i can't see them.
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Oct 12, 2010
Not sure if this question belongs here or the Interop forum, but here is the situation. I have a vb.net app that was upgraded from vb6. It has an overloaded Login method. A simple method with two string parameters for name/password calls the primary login method with numerous optional parameters. The simple method is for compatibility with C# because, until Visual Studio 2010, optional parameters were not supported.The C# intellisense finds the overload and compiles ok... but throws an error at startup stating that it cannot find the Login method. This makes no sense and appears to be a problem with vb. (I am using .net 4 for both vb.net and the c# test harness.)ILDASM shows the following:
Public Function Login(ByVal LoginName As String, ByVal Password As String, ByVal Alias_Renamed As String, Optional ByVal LoginFrom As String = "", Optional ByVal ClientIPAddress As String = "", Optional ByVal ServerIPAddress As String = "", Optional
[code].....
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Feb 14, 2012
I'm trying to create an overloaded method in a module, but if I type Public Overloads Function GetData(ByVal sql As String) As String it tells me "Inappropriate use of 'Overloads' keyword in a module". Are overloaded methods not allowed in modules?
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Feb 26, 2011
Using .NET (VB or C#), how can I add an e-mail alias to a user in Active Directory? I have written code to change the format of our usernames from "first_last" to "first.last.country" and I need to update the e-mail addresses as well. Our solution is to add an alias e-mail to the users in exchange, but I don't know how I can do this using .NET.
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Aug 16, 2011
In Reporting Service, I need to have a vertical, starting at bottom, bottom-to-top, horizontally middle aligned text.The only way to do this is to create an image in code, and set this image into the title column.See the code below.Basically, it works fine, just that the anti-alias quality is pretty crappy.Is there anything I can do to improve it ?The vertical text is somehow pale, and not full black, and also there is smearing all around the text, in the background color.As well as it appears bolder than the text on the left, but both have format arial, size 8, bold I've tried all other values of System.Drawing.Text.TextRenderingHint.*, as well as no anti-alias at all but the current one seems to be the least crappy.I've also tried to change the image format, to no avail:
Function LoadImage2(ByVal sImageText As String, ByVal sImageTextMax As String) As System.Drawing.Image
sImageTextMax = sImageTextMax.PadRight(15)
Dim iFontSize As Integer = 8 '//Change this as needed
[code]....
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Apr 6, 2012
How might one go about aliasing a type in VB.NET or C# such that when the alias is used as an argument type in a function, accidentally using the not aliased type is an error?
i.e.
Imports AccessSpecifier = System.String
Module Accessors
Delegate Function IoOper(ByRef strm As System.IO.Stream) As Action
[code]....
Overall, I'm wanting the IDE to force me to know what I'm doing if I'm throwing Ints around to mean Flags, or States and Strings around to mean Names, Propertys and Records.
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May 17, 2010
I'm trying to get the Alias of the logged in user (Active Directory/LDAP environment/Exchange) .
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Aug 13, 2009
I am using a databound datagridview control. I created a custom query to fill the grid with which includes joins and using alias names in the sql query for the joined fields. Here is the query I am using:
SELECT Events.[Date], Events.[Time], Contacts.LastName AS Lastname, Contacts.FirstName AS Firstname
FROM (Events INNER JOIN
Contacts ON Events.ContactID = Contacts.ContactID)
The datagrid views fine using the columns that are in the events table. I want to be able to view the aliased columns from the contacts table in the datagridview as well.
How can I display the joined columns in the datagridview? Maybe there is a better way to do this? Maybe this is not enough information for a resolution.
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