If you try to compile the query below in Visual Basic .NET, it fails. From x In {1, 2} Select x.ToString() The error given by the compiler is: Range variable name cannot match the name of a member of the 'Object' class. There is nothing wrong with the equivalent C# query, though: from x in new[]{1, 2} select x.ToString()
This does not happen with the ToString overload that takes a format (it is a member of Int32, not Object). It does happen with other members of Object, as long as they don't take an argument: with GetType and GetHashCode it fails; with Equals(object) it compiles.
1. What's the difference between ToString and ToString()? (i do know that ToString method is to cast numeric values to string but don't know how to get it to work)
2. Why do i need XML comment feature? is it necessary?
I have no idea how to do this, but I want to create a [I dont know what it is called] to allow me to convert a class property to another type.The I could use the following w/ the new type:
Dim stringPhoneNo as String = "(111)111-1111" Dim typePhoneNo as PhoneNumber = stringPhoneNo.ToPhoneNumber()
When a custom class overrides the ToString() method, the C# IDE uses this function to display the class in the debug mode(tooltips, watcher etc) Does the VB.NET the same? I have impression that overriding ToString() method does change nothing. I mean, in the watcher I see Name myBusinessObjectInsnace Value {MyNamespace.myBusinessObjectInsnaceType}
My problem is that I'm trying to parse a String to a System.Drawing.Color. Im trying to set up a simple notepad, here's part of my code:
Private Sub ToolStripMenuItem6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Colorfuente2.Click Try Dim cdlg As New ColorDialog[code].....
Many times i was not getting correct output,then i put .tostring() at the end then it gave good output.so basically why do v need this?also Convert.ToInt32(cmd.ExecuteScalar()) why convert to int32?
Converting an object .tostring() removes the leading zeros. The object is not a fixed length, so I can't do object.tostring("0000000") where the number of zeros represents the fixed length.
An example object value is "0357" when I convert that object .tostring it becomes "357".
Is there a method for keeping the leading zeros where the length is not known?
I just want to know, what exactly the difference between the functions CStr() and Str() and also the .ToString()? With the code provided below, what's the difference between the three?
VB.NET 2008. How could I make a new line inside the ToString() Function that VB already have. How to do like a .WriteLine() but inside the ToString() function. In my case, this inside of a class of course. I don't know if you get me. All I want to do is to show a fraction in the normal way not using the slash(/). Showing the numerator on top of a line, and below it the denominator. This inside the VB pre-made ToString() function.
This is what I've tried; Public Overrides Function ToString() As String Return Me.numerator & "/" & Me.denominator End Function Output example: 2/3 But this is not what I want.
When I am concatenating object values together to form a string in VB.NET, is there a difference in performance or a recommended best practice between using the & concat or the + concat with calls to .ToString() on each object?
Example (which is faster or best practice):
Dim result1 As String = 10 & "em" Dim result2 As String = 10.ToString() + "em"
I've been programming in vb.net a lot for the last 9 weeks and I have just come across a lot of double functionalities (hope I used the right word for that).For instance, you can use CInt, CType, Directcast or Convert to turn something into a integer. (Directcast doesn't really belong in that line but whatever).
With calling methods you can do DoWork() or call DoWork()With returning values in functions you can do DoWork() = 3 or return 3 Why is this? Is it just to make the transition frm vb6 to vb.net easier? Or about giving the programmar a lot of options. I must admit I don't really like to have that choice, I am always in doubt whether I am using the right method .
For reasons that are beyond my control, I have three Projects. Projects A and B reference project C. Project A references project B so that it can open a large form in project B. I now need to open that large form from project C, but VB won't allow me to add a reference from C to B because that would create a circular dependency. I found a way around it, though. I created a Timer in A, and when I opened C from A, I passed in that timer. When the user performs a certain action, I enable the Timer from A, and this causes C to open B for me.
Is the default format of ToString dependent on anything server related? Here's the issue: I'm testing and have tested an application on my local machine and ToString(), by default, is returning in a format of "MM/dd/yyyy hh:mm:ss tt", however on our server it appears to be returning as "dd/MM/yyyy hh:mm:ss tt" which the consuming application is not expecting and causing errors.
Dim uvExpireDate = DateTime.Now.AddMinutes(1) Dim token = String.Format(fmtString, uvExpireDate.ToUniversalTime().ToString(), [various other params])
I have a custom business object which overloads the .ToString() function. It also implements IFormattable.ToString, so I can define my own custom formats.This approach seems to work everywhere in my app, except .rdlc reports. For example, I have a text field on a report with the following expression:
=Fields!MyField.Value.ToString("lr")
"lr" is a custom format I have created. When running the report I always get #Error as the output. I've placed breakpoints in my .ToString function and stepped through the code as the report is running, and I know the function is returning the correct value, but the report just doesn't seem to be capable of receiving and displaying it.
Public Class MyCollection Inherits ObservableCollection(Of MyCollection) Private _Name As String
[code]....
EDIT: I know that I can use DebuggerDisplay, but unfortunately it is very limited. The class in reality is quite complex and I need to have the possibility to define a logic in what I show during debugging, if possible.
Why does: DateTime.Now.ToString("M") not return the month number? Instead it returns the full month name with the day on it. Apparently, this is because "M" is also a standard code for the MonthDayPattern. I don't want this...I want to get the month number using "M". Is there a way to turn this off?
I use the expression below to evaluate for a certain value, '91'. If however, the value at that array position is '0B' a System.FormatException is thrown. How do I alter the evaluation so this exception won't be thrown?
I built a simple vb.net winforms project that pings IP addresses and logs the results. It works fine on most machines I've tried it on. I log the status result of the ping System.Net.NetworkInformation.IPStatus) by using the IPStatus.tostring method.
Normally this returns a text result such as "Success" or "TimedOut"Yesterday, on one machine it returned "65" ...which is not one of the enum values. I have a feeling it might be a combination of values. I ran some test code:
Dim status As System.Net.NetworkInformation.IPStatus status = Net.NetworkInformation.IPStatus.Success MsgBox(status.ToString) Which returns "Success"And this: status = Net.NetworkInformation.IPStatus.BadDestination Or Net.NetworkInformation.IPStatus.BadHeader MsgBox(status.ToString)
Which returns "11050" I suspect the "65" I saw was the result of some combination of enum values. Is there any way I can change the code in my second example to show the text names of both values? That is... any way I can see ALL values in this variable?
I have a program that will copy files from 'SWV' to 'SWV20090824' - todays date...It works great, except that todays date is being interpreted as '20093324'.the '3324' portion changes every time, suggesting that it is somehow reading the time or something else instead.[code...]
I want it to look like this: "Done in: 02:02" Can't seem to get the format for the seconds correct for some reason. Is there another method I can use to force the seconds to use two placeholders even for seconds 1 through 9?
i made this program some time ago. it finds all numerics in an excel program and changes their formatting and it works ok. [code] my problem is, there are some alphanumeric values where i need to change the formatting of the number part of the cell example: [code] but it gives me an "Object reference not set to an instance of an object." error is there another way to solve my problem?
Dim host As String = System.Net.Dns.GetHostName() Dim LocalIP As String = System.Net.Dns.GetHostAddresses(host).GetValue(0).ToString ListBox1.Items.Add(CStr(LocalIP))
Dim host As String = System.Net.Dns.GetHostName() Dim LocalIP As String = System.Net.Dns.GetHostAddresses(host).GetValue(0).ToString ListBox1.Items.Add(CStr(LocalIP))
