C# - Distinguish Types With Identical Fully Qualified Names?
Jan 8, 2010
The scenario is I would like to be able reference two similar 3rd party assemblies (e.g. assem1 and assem2) which both define a type with the same fully qualified name (e.g. Example.MyType). Is there any way to distinguish between these and refernce them seperately? I believe the answer is no but confirmation or correction would be handy. Edit: Answered for C# 2.0 and higher below but need an answer in VB.Net 1.1
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Mar 27, 2012
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.":
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Apr 18, 2011
Suppose I want to write a generic function that will return the fully qualified name of the data type. In other words, how would you implement the following: Public Shared Function Foo(Of T)() As String ' Return the fully qualified name of T End Function
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Jan 13, 2011
I have a structure that I want to copy, but I don't want to have to copy it item by item if I don't have to. Is there a way to do this? EX:
[Code]...
I remember in Fortran and C there were statements like Common, Union, etc. that would equate two objects or arrays or words or arrays. Does VB have anything like this?
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Nov 2, 2009
I am using a structure array with multiple member names with 2 types. My question is can you single out one of the member names and add its total? kinda like this...
HTML Code:
structure structureName
dim a as string
dim b as double
dim c as double
[code].....
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Feb 1, 2011
I am working on a project where my class has to execute VB code provided by the user, to make it simple I am trying to recreate my own eval function, I am using the following code I found on the web to do this task.
Imports Microsoft.VisualBasic
Imports System
Imports System.Text
Imports System.CodeDom.Compiler
Imports System.Reflection
[Code] .....
The problem with code is that it can't access any variables or there values, so I have decided to get the variable names, there values types and there types dynamically and recreate them in the class that is being created dynamically. Any way to get the variable names there types and values in the current class or method, so that I can recreate them, and execute the user passed code, the user knows what variables are in the current class or method and there datatypes but he don't know there values as they may have changed, so he can't initialize them. Is there a way to do this, this code will be called in an asp.net page on page_load event, the code passed by the user is stored in the variable vbCode that is passed as a parameter.
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Feb 6, 2011
I am writing a code-generator that will need to output some miniscule portions of VB.NET code, and since this is a code generator that will add user-provider code, I'd like to try to avoid type name conflicts with types or names in the user-provided code.
In C#, I can prefix types with global:: to make sure they're matched from the global type namespace hierarchy, rather than some local name, but is there a similar system for VB.NET? ie. this: global::System.String
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Mar 23, 2012
While running the code I've included below I receive the error "EntityCommandExecutionException was unhandled by user code.I'm then told to look at the inner exception for details...and there I see under Data:"In order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user."And under Inner Exception --> Message:"A transport-level error has occurred when receiving results from the server.[code]
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Apr 12, 2011
I have a barcode scanner connected to a PC that working with a c# program.now i want to distinguish between the scanner and the keyboard which one is sending data to my program.
somebody said this to me in another topic(but i can't do this yet): basically you can configure the scanner to send some characters that basically tell the computer "hi, it's me". When you see those characters in your input stream, you know the information is coming from the barcode scanner, not from something the user typed on the keyboard. Did you check the manual that came with your barcode scanner? It should have more information about this.
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Oct 15, 2011
I want my to create an explorer like application. What control should i use to show the contents of a directory.I tried listview and listbox. Unfortunately i was unable to add items in a listview using the function getdirectories("D:")I managed to do so with listbox control. But how can i distinguish whether the selected entry is a file or a directory. Code snippet is given below :
Private Sub ListBox1_DoubleClick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.DoubleClick
<strong>sel = ListBox1.SelectedItem</strong>
ListBox1.Items.Clear()
[code]....
I want that if thesel is file, then it'll be open in its default application,i.e. using system.process.start(sel.filetype).Else if sel is a directory then the directory will open.
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Sep 7, 2010
Put a Datagridview on a form, fill it with data. dgv1.enabled = True and dgv1.enabled = False are almost the same look to the eye unlike other controls (textbox,combo, listview, etc ...) where there back color changed to light grey and you can distinguish if that control is enabled or disabled but not for Datagridview.
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Oct 2, 2009
How do I distinguish copying data and a pointer when using a class?E.g.
public class myparams var1 as integervar2 as intergerv3 as stringend classmyvar as new myparamsmyvar.var1=1myvar.var2=2myvar.v3 ="hh"othervar as new myparams
I want to copy all of myvar data into othervar in one go.. without doing
othervar.var1=myvar.var1 etcusing othervar=myvar"
Looks like its just copying the pointer of myvar into othervar? Can I copy all the class data in one go? VB2008 user
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Jun 13, 2009
I'm using GetDriveType function to determine the drive type.the function works fine, but not with external HDD it returns 3 or "fixed" which confuses me!! is there any way to distinguish between internal (local) fixed HDD and external (USB) HDD?
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Oct 21, 2009
title is a bit vague. Is there any way I can tell if it's the user or the code that's altered a combobox? I want certain things to happen when a combobox is updated, but I don't want them to happen when the code is altering the combobox at runtime, only when the user selects something out of them. Unfortunately, if I use the 'Selectedindexchanged' option that triggers when I change the contents in code too. I've tried disabled the combobox while I update it, but that doesn't seem to work. Any way to detect user input only? My combobox is drop-down only by the way, so it's only if they select an option - they can't type anything.
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Jun 13, 2012
When inheriting class or control e.g. ListView, TreeView, etc..., what is the best way to distinguish between built-in methods/property/events and mine?Currently, i start my methods/property/events with "aa" in order to make them at the top of auto complete list.
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May 9, 2011
how would you identify the shape of text like inside a scanned document containing text and graphics?In a perfect world,users would never enter data in the wrong form,files they choose to open would always exist and code would never have bugs.[URL]
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Nov 1, 2009
I have a class with a Property called 'Value' which is of type Object.Value can be of any type, a structure, a class, an array, IList etc.My problem is with the setter and determining whether the value has changed or not.This is simple enough for value types, but reference types and lists present a problem.For a class, would you assume that the Equals method has been implemented correctly, or just assume that the value has changed every time the setter is called?If I did assume it's changed, then perhaps I should assume it for value types as well, so that the behaviour is consistent.
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Jun 20, 2012
I'm having a few problems converting some code into VB.NET from C#. Most of the translating is done, but I am getting errors when I try to run my code, and I can't figure out what is causing them. Here is the Sub I translated.
Public Sub CreateWidget()
Dim blue As LCDColor
blue.Red = 0
blue.Green = 0
[code]....
The error I receive on this line ("vision.Widgets.CreateWidget(wg1)") reads "In order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user."
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Jun 6, 2009
I receive a System.Data.SqlClient.SqlException in the following code: Specifically Incorrect syntax near ' In order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user. The exception detail in its entirety is shown below the code.
[Code]...
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Aug 15, 2011
I have a DataGridView which populates from an SQL query just fine in default mode
using these table names
[firstName] [varchar](20) NOT NULL,
[lastName] [varchar](20) NOT NULL,
[code]....
I have edited the column headers and set the column names to the same values as my table names yet the data is not showing in form load I have set datagridview.AutoGenerateColumns = False I know the data is there if I delete datagridview.AutoGenerateColumns = False then the data is shown with the default headings?
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May 15, 2012
When inheriting class or control e.g. ListView, TreeView, etc..., what is the best way to distinguish between built-in methods/property/events and mine?
Currently, i start my methods/property/events with "aa" in order to make them at the top of auto complete list.
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Nov 9, 2005
I made project using VB.Net 2005 with multi languages, the first form is MDIParent form with MainMenu and toolbars also there is some changes in properties as righttoleft and text of forms.In my Mainmenu (Menustrip) there is opetion to change the UI Culture and I have already done but I need to change all texts in the form as mainmenu items anf form properties.My quetion is: how can I reload my form again to read the new texts names and mainmenu items names from resx file?
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Sep 5, 2011
I am doing work for a client who has lost the source code for one of their VB.Net WinForms applications. The assembly they have is not obfuscated at all. I am trying to recover as much of the source as I can as C# source and have tried several tools for decompiling assemblies, including Reflector, ILSpy and JustDecompile (all the latest versions), but they all produce code with a huge number of errors in them. Because of the large number of errors in the generated code, I am going to ask about the specific errors (in different questions), get more directed answers and in this way try shed some light on why all the tools are having difficulty decompiling this assembly. This question pertains to the fact that the code generated by all these tools always have a large number of invalid member variables (fields) such as the following:
private short $STATIC$Report_Print$20211C1280B1$nHeight;
private ArrayList $STATIC$Report_Print$20211C1280B1$oColumnLefts;
private StaticLocalInitFlag $STATIC$Report_Print$20211C1280B1$oColumnLefts$Init;
why the generated code has these invalid member variables?
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Oct 31, 2010
Is there any way to get common control names like Save, Copy or Undo Redo in the user's windows language? (I saw this in some programs which weren't made for my windows language. Also the Yes No Massage Boxes will change...)
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Sep 11, 2010
How does one learn how to fully use an API or a DLL?How does one learn what all an API or a DLL can do?What parameters does it return?Is their documentation on each one?
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Jun 23, 2012
I need to compare two dictionary values if the types stored are equal, this is what i have
if gettype(Args(key)) = gettype(argtypes(key)) then
'' do something
end if
[Code]....
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Nov 18, 2009
When I launch my application, and press the "X" button on my app, or my quit button which deploys: me.close It will not fully close the application. Like the instance is still running in Visual Studio or if you go to task manager processes you can still see it there. How would I get this to fully close?
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Jul 1, 2009
Is there a way to fully justify text in rtb? I mean justified from both left and right sides.
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Mar 13, 2010
ive coded a program with mutltiple forms and ive built it. The problem is that if i shut it down using the "X" it does not fully shut down and still uses certain files. Is there any code so i can make sure it shuts down completely?
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Dec 21, 2010
Does anyone know when support for ASP will be fully discontinued? Obviously there no longer is development occuring on the platform, however I am trying to put together a business case as to when we should move to a new platform and make sure the timing is right for where the company will be at that time.
Its my understanding that given that it was shipped with Vista/Windows 7/Windows Server 2008, that it will be supported for 10 years past those ship dates.
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