Benefits Of Different Datatypes?
Jun 8, 2009I was wondering, what are the benefits of having a variety of different data types available to programmers?
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Benefits Of Using EventHandler?
Dec 7, 2011I'm having trouble wrapping my head around Events and their Handlers in general. I was working from some sample code that used them, and I can't understand why use an event rather than simply using a sub. I'm absolutely sure I'm missing the bigger picture here.
[Code]....
The Event allows a class to say 'Do something when this happens' in a very ambiguous way, leaving the class which created the Object to define a Handler; what that action should be. That Handler can, and very likely will, be unique to each instance of the class.
It seems to me that this would likely be achievable (on a basic level) through indexing and enumeration, but that would get messy and become a lot of code to write rather quickly. This is probably a much more flexible and extensible way of handling things. I'm going to post this anyway, in the hopes that I'll get someone to tell me whether I am correct in my observations or totally off base, and that it helps someone else who is having trouble with this concept as they dip their toes into OOP and event driven objects.
Benefits Of Data Typing
Jun 21, 2010Explain why data typing helps the programmer when writing a program?
View 2 RepliesC# - The Benefits Of Using String.Empty?
Sep 16, 2010Possible Duplicate: In C#, should I use string.Empty or String.Empty or "" ? I just don't understand the benefits of using String.Empty over "". Aside it being strongly typed its longer.
View 2 RepliesBenefits Of Publishing An Application Versus Just Grabbing And Using The .exe?
Jun 17, 2011what are the benefits of publishing an application versus just grabbing and using the .exe file from the build?
View 1 RepliesHow To Convert DataTypes In VB
Jan 2, 2011I am working on a produce inventory database in my VB Express program. I have a form on the bottom and a spreadsheet at the top. I want to enter all the data in the form and have that data automatically transferred as a group to the spreadshet in the upper part of the page when I press a button.
I know that there's an insert function. I set it up correctly. The problem is that I have to convert the textbox, which contain string data, to the datatype used in the database spreadsheet. HOw do I use CAST or do this?
Here's the function I am using:
Me.TableAdapterManager.InventoryTableAdapter.Insert(IDTextBox.Text, fruitName, unitprice, unitsize, unitIn, unitTransit, unitOut)
Evernything is a string cause the data is coming from a textbox, I need to convert it to the datatypes used in the database.
VS 2008 - Using DataTypes As Parameters
Aug 31, 2011I need to call a function that expects a DataType as a paremeter. I fail to get the right syntax to specify a datatype (integer, string, single, boolean, etc):
Public Sub AddSetting(ByVal PropertyName As String, ByVal PropertyType As Type, ByVal DefaultValue As String)
Dim p As New SettingsProperty(PropertyName)
p.PropertyType = PropertyType
p.DefaultValue = DefaultValue
[Code] .....
.net - Casting DataTypes With DirectCast, CType, TryCast?
Apr 24, 2010Ever since I moved from VB6 to VB.NET somewhere in 2005, I've been using CType to do casting from one data type to another. I do this because it is simply faster to type, used to exist in VB6 and I do not know why I have to be using DirectCast if there is apparently no difference between them.I use TryCast once in a while because I understand that sometimes casting can fail. I however cannot get the difference between CType and DirectCast.
View 3 RepliesAssign Standard Names For Controls And Datatypes?
Feb 24, 2010Using VB.Net and C#.Net.
For Example
Am Using More than one form
If am assigning a variables like this.[code]...
This variables cannot be easily understand for everyone(other programmers).
How to assign a Standard Datatype variables,
Standard Variable Means (Everyone can understandable)
And also How to give a standard name for gridview, text boxes, labels etc.
Changing Datatypes Of Properties Of Serialized Objects?
Jun 18, 2009Changing datatypes of properties of serialized objects?
View 1 RepliesComparisons For A LINQ Except Query Using Primitive Datatypes?
Jan 13, 2012Anyone have any insight on the Big O notation for comparisons for a LINQ Except query using primitive datatypes? I couldn't find anything on google.
View 3 RepliesFunny Declaration Structure In MSDN KB DataTypes Documentation?
Oct 5, 2010I'm looking at the following in the Data Types docs for the Windows API:
#if defined(_WIN64)
typedef __int64 LONG_PTR;
#else
[code]....
.net - Extending Sealed Intrinsic Datatypes Using CompilerServices.Extensions-No Way To Reuse?
Nov 11, 2010I defined the following extension of the Date? data type
[Code]...
But when I moved my compiler definition to a separate DLL, I the ToObject method was no longer available from my project even though I had referenced the Class project which now contained the extension. Is this a limitation of the Compiler Extensions? HOw do you get reusability out of them?
System.Data.SqlTypes Datatypes Be Used In Asmx-style .NET Web Services?
May 26, 2010It looks like they are converted to regular date types in the generated proxy object.I'd like to optionally pass null values for these dates.Other than switching to WCF (no time to learn it right now), what is the best way to handle this situation. It looks like I also cannot pass NULLABLE date types.
View 1 RepliesVS 2008 Populate Object With List Of Windows Users Without Changing Datatypes?
Jul 25, 2011PROJECT TYPE: Windows Forms Application
LANGUAGE: Visual Basic
.NET VERSION: 3.5
IDE: Visual Studio 2008
OPTION STRICT: on
OPTION EXPLICIT: ON
I need to populated a ComboBox and a CheckedListBox with a list of the Windows Accounts on the host computer. I also need to the user to be able to apply settings to the users individually. Thirdly, I need to find a way to add a startup registry key in the CURRENT_USER for a different user than the "Current User" (For example: User1 is an Administrator. User2 is a Limited Account [can't modify registry]. User1 needs to add Registry key to User2's "CURRENT_USER". This is a parental control application so the Admin accounts need to be able to access the registry from all users without affecting all users at once. I do not have any code to paste because I still have not the foggiest idea of where to start. I think it probably has something to do with an array (I have no experience with arrays whatsoever) but I am stumped from there. I'm a new, self-taught programmer so I speak idiot at times,
Summary of Questions
1) How do I retrieve a list of Windows Users?
2) How do I populate the objects above with such a list?
3) How do I interact with the items on that list (specific user accounts)?
4) How do I modify another user's CURRENT_USER Registry key?
Convert These Datatypes: Date To String And Integer To String?
Sep 1, 2010how can i convert these datatypes: date to string and integer to string.Because it must be in a string datatype when I display it in a datetimepicker and textbox.
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