Compare 2 Objects To See If They Are Compatible?
Feb 10, 2010
I want to test if the 2 objects values can be compared.
For example if I have a variable define as an object which contains a value of "A" and another variable defined as an object with a value of 0. (These must be defined as type Object.)
When I do a simple compare If Object1 <> Object2 Then etc. I get an error. So how do I test to see if the objects are comparable? I have looked at TryCast , DirectCast, Ctype etc but cannot see
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Aug 28, 2008
I want to compare two objects to check if all the properites of both the object have same value or not. for this i need to use the reflection to enumarate through all the properties of an object and check the value of the property. To try the code just i have written a Employee Class having Two Properties EmployeeNo and EmployeeName. I am creating an object of the Employee class and need to write a function that can list the values of all the properties in the class.
[Code]...
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Jan 2, 2010
So I am working on a project with a lot of pictures in my resources and I am trying to check what picture has been put into a part of my array. I am using structures in my array and i'm not sure if that will make a difference.
If logs(i).pic Is My.Resources.Log2 Then
logs(i).gap = 70
End If
[code]....
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Jan 17, 2012
I am attempting to compare a bitwise clone object to its parent to check for changes using:
If Not objCP.Equals(objCPClone) Then
'do something
End If
and it always compares as not equal even immediately after creating the clone. How should they be compared to check for changes?
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Oct 12, 2010
I want to compare two objects whose type may be diffrent.
For eg, I expects 'true' for comparing 1000.0(Decimal) with 1000(Double) . Similary, it should return true if I compare 10(string) and 10(double) .
I tried to compare using Object.Equals() , but it did NOT work.It return false if two objects have different data types.
Dim oldVal As Object ' assgin some value
Dim newVal As Object 'assgin some value
If Not Object.Equals(oldVal,newVal) Then
[Code]....
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Jun 16, 2010
I have a connection string set up and a data reader.I have two textboxes on my form for users to type in. One textbox (txtLogin) is a user name and the other textbox is a password (txtPwd). I'm trying to compare what a user types into those two boxes to a table in a vfp database. The table I'm trying to compare to is open about 99% of the time so I need to be able to read from it in some type of "shared" mode.
My Select statement needs to be something similar to "select * from sites where clogin = txtLogin.text and cpassword = txtPwd.text"I just don't know how to get this to work properly.
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Sep 14, 2010
I am trying to compare specific properties within two objects. Example:I want to compare the Last Name, Age, and Sex of two people (Person1 and Person2).
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Jun 18, 2009
Is there a way to compare two dates (which include time) ignoring the time? I have a 1/1/2009 8:00am and 1/1/2009 9:00am and I just want to know if it is the same day, without any care to what time it is. I know I can convert the date and compare the strings, but is there another way?
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Jan 12, 2011
What's a sound approach to override the CompareTo() method in a custom class with multiple approaches to comparing the data contained in the class? I'm attempting to implement IComparable(Of T) just so I have a few of the baseline interfaces implemented. Not planning on doing any sorting yet, but this will save me down the road if I need to.
Reading MSDN states mostly that we have to return 0 if the objects are equal, -1 if obj1 is less than obj2, or 1 is obj1 is greater than obj2. But that's rather simplistic.
Consider an IPv4 address (which is what I'm implementing in my class). There's two main numbers to consider -- the IP address itself, and the CIDR. An IPv4 address by itself is assumed to have a CIDR of /32, so in that case, in a CompareTo method, I can just compare the addresses directly to determine if one is greater or less than the other. But when the CIDR's are different, then things get tricky.
Assume obj1 is 10.0.0.0/8 and obj2 is 192.168.75.0/24. I could compare these two addresses a number of ways. I could just ignore the CIDR, and still regard as obj2 as being greater than obj1. I could compare them based on their CIDR, which would be comparing the size of the network (and a /8 will trump a /24 quite easily). I could compare them on both their numerical address AND their CIDR, on the off chance obj2 was actually an address inside the network defined by obj1.
What's the kind of approach used to handle situations like this? Can I define two CompareTo methods, overloaded, such that one would evaluate one address relative to another address, and the second would evaluate the size of the overall network? How would the .NET framework be told which one to use depending on how one might want to sort an array? Or do some other function that relies on CompareTo()?
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Mar 3, 2010
I have two textbox in my application.
Textbox1.Text="19-Jan-2010"
Textbox2.Text="Jan 2010"
May I know how can I compare that Textbox1 and Textbox2 text is within same month and same year?
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Nov 17, 2010
I have read here [URL] that to instal .net 4.0 CP (client profile) you must have WinXP SP3 or above. This is somewhat worrying to me as there are many people on SP2 or below.Is there any way I can run a .Net 4.0 app on any version of Windows xp and above? (without worrying about which service packs they have)?If not, what about .NET 3.5, 3.0 or 2.0?how low do I need to go in my .net framework version choice to ensure compatibility for WinXP SP2 or above, ... How low do I need to go in my .net framework version choice to ensure compatibility for WinXP (no service packs) or above?
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Jun 2, 2010
If I'm running VB Express 2008, how do I choose what NET Framework I need the compiled EXE to be compatible with?
How do I do it in Visual Studio 2010?
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Oct 24, 2011
If something is written in VB is it compatible with android?If so, can you give me some documentation?
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Mar 6, 2012
I have several programs developed in visual studio 2010 (visual basic) working good in window 7 but not in xp, for example the sql connection is slow or the program cannot connect to the database. Also the webbrowser does not work 100%.
Is there some way to make compatible a program in xp??
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Aug 18, 2009
I want to develop a standalone app, but don't know what to use.Browed around but could.nt find anytinh worth while.standalone db an GUI Management software to use so that i can program using VB.NET and which ever provider. I need a freeware version so that i can have a test run first.
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Dec 15, 2011
I made a software that will run under .net framework 2, but it seems not compatible with aero, the background colour of the window will use the classic control colour instead of visual style background I chose after minimize and restore the window.
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May 23, 2009
I'm testing my 32-BIT application on windows XP Pro, and Windows Vista Home Premium, will there be any problem for my App to run on 64-BIT?
Also wondering, if my App has no bugs/problems with Home Premium (Vista) will anything on Ultimate (Vista) effect it? like Windows BitLocker Drive Protection? or anything like that?
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Mar 17, 2010
my OS is win 7 i am using visual basic 6.0 which version of crystal report could be use
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Jul 19, 2010
Is there a way to compile my application so it would be compatable with most OS?
When i compile my application, it runs fine on my computer but when i want to run it somewhere lese it asks for .net framework? My app is not even complicated and i wonder if there is a different way to compile it?
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Jul 26, 2011
I create a Windows Form Application with Framework 4 (x86) in Windows 7 x64 Ultimate using Visual Studio Ultimate 2010 x86.
How I convert my app to run with old .NET Frameworks? My app need to be compatible with more number of computers as possible without need to install the new version of framework
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Jan 11, 2012
All I was able to figure out is a decleration for GetRawInputDeviceList which atm isn't working for me, I tried passing lots of different values in to get something to work, i've got outputs of -1, 0, and 1 from it but I use a mouse/keyboard & also have a controller hooked up...I also am not retrieving any information on what type of device(s) that might be hooked up/detected.The deceleration types & the like may be off but I translated from C++ code.
Declare Function GetRawInputDeviceList Lib "user32.dll" (ByVal pRawInputDeviceList As IntPtr, ByRef puiNumDevices As Int32, ByVal cbSize As Int32) As Int32
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Oct 7, 2009
I have created a Visual Basic ActiveX DLL project. The output of this project ( a dll )gets loaded inside VB6 runtime i.e. a process which is loaded with msvbvm60.dll. I used Visual Basic 6.0 IDE ( vb6.exe:name of compiler ) to create this project. Now my requirement is to create a similar dll which can run inside VB5 runtime ( msvbvm50.dll ). I assumed that there should be some Visual Basic 5 IDE ( vb5.exe ) which can be used to create VB5 runtime compatible dll, but could not find one
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Apr 21, 2009
is the dot net frame work 2.0 compatible to vista OS? if not may i know wht dot net frame work will compatible to vista?
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Apr 13, 2010
I have to do a project for my computer engineering class. I made a game, I was almost done and the deadline was the next day. so i downloaded VB 10 and finished up. when i went to open it at school it wouldn't open. how can i make it compatible with VB 8?
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Dec 5, 2011
make objects from the ToolBox using code instead of changing existing objects invisible then visible later?
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Jun 23, 2012
I am getting this error, Not sure why it is happening "Error The SqlParameterCollection only accepts non-null SqlParameter type objects, not Int32 objects."I have tried with all sorts of possibilties, now try to enter default data as dummy data,
Using connection As New SqlConnection
connection.ConnectionString = ConfigurationManager.ConnectionStrings("DentalDeviceConnectionString").ConnectionString
connection.Open()[code].....
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Jan 29, 2011
I have a program like this.
Module Module1
Public Class Mstr
Public Property Prop1 As String
Public Property Prop2 As String[code]....
But it is not working as I expect it to. You can see it from.The DtlsB properties of all three DtlsA objects are having values from last iteration.
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Jan 6, 2011
I want to let the user input objects to a richtextbox 1 object on each line, and somehow use Random.Next to select pseudorandomly a few objects, the number 'few' inputted in a textbox.
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Jan 18, 2012
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Using conn As New SqlConnection("Database=Clinic_Management_System;Data Source=.SQLExpress;Integrated Security=True;AttachDBFilename=|DataDirectory|Clinic Management System.mdf")
Dim cmdRecord As SqlCommand
[code]....
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Feb 7, 2010
I have a user control that inherits the FW ListView and I need to dispose of two objects when the form's disposing of it's objects. Here's what I've concluded already, am I on the right track?
[Code]...
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