I'm trying to format a string with the left and right fxn but am getting an error "Public read only property () as integer has no parameters and it's return type cannot be indexed"[code]...
View 4 Repliesi m using datetimepicker to choose date..i m extracting date from sql database...but i need to send only the date part not the time part.i m not able to do left funtion...here's my code...
cmd = New SqlCommand("select * from employee_log where log_datetime between '" + left(DateTimePicker1.Value,10) + "' And '" + left(DateTimePicker2.Value,10) + "'", cn)
the syntax with the left is incorrect...how do i do it...?
I have some vb code i would find it helpful if someone was able to convert it to c# for me. I dont really know what the left function does?[code]...
View 2 RepliesI expected the "Left" function in the code below to return the letter "A" but it returns nothing? Also, as a further test, Left(CP, 3) returns nothing?
View 3 RepliesI have a very small VS 2010 app that basically reads the records of a text file, adds some additional information to the end of the record read, and writes the new record to a new text file.The issue Im having is with the Left() function.I need to take all chars left of position 10 of a text box and add it to the end of the new record before I write it. When I use the Left() the "Error List shows an error related to this function.The error says:Public Property Left As Integer has no parameters and its return type cant be indexed.It gives two solutions: 1) Generate Method Stub Left in Project1.Form1 and 2) Generate Property Stub Left in Project1.Form1 When I select solution
1) that creates a warning indicating: Function Left conflicts with property Left in the base class Control and should be declared Shadows. When I select solution
2) that creates a warning indicating: Property Left shadows an overloadable member declared in the base class 'Control. If you want to overload the base method, this method must be declared 'Overloads.
Here is the code:
Public Class frmProcessFile
Private Sub cmdProcessFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
[code]....
VS 2008 [RESOLVED] Using the Left function
View 4 RepliesSince the string class does not have a Left method, how would you do this in VB.Net. I could use String.SubString(0, x), but the problem with this method is that it throws an exception if the String is not at least x characters long. Should I use the Microsoft.VisualBasic.Left function instead?
View 6 RepliesI am trying to do string manipulation of an OpenID in my codebehind. For example, if the user enters " url...I want to do the following:
1. Remove the http:// or https:// if it exists
2. Remove the "/" at the end of the OpenID if it exists
So that all would be returned is url...I have used the Right, Mid and Left functions before with a string that contained spaces but I'm not sure how to accomplish what I'm trying to do here.
As a non .net programmer I'm looking for the .net equivalent of the old vb function left(string, length). It was lazy in that it worked for any length string. As expected, left("foobar", 3) = "foo" while, most helpfully, left("f", 3) = "f".
In .net string.Substring(index, length) throws exceptions for everything out of range. In Java I always had the Apache-Commons lang.StringUtils handy. In Google I don't get very far searching for string functions.
Edit:@Noldorin - My first encounter, although it took me several seconds to do the same in c#:
[Code]...
Note the static class and method as well as the this keyword. Yes, they are as simple to invoke as "foobar".Left(3). See also c# extensions on msdn.
say if I have a string 010451-09F2
How to I get left of - from the above string in vb.net
I want 010451
The left function doesn't allow me to specify separator character.
For years I never had trouble with this String. Format function until today when I got a value longer than 0 characters and the function returned all the characters in the string instead of just ten. Now sometimes I get less than ten characters so I can't use the substring with out getting an error. I can try the left function but I was hoping there was a solution with the Format function.
View 6 RepliesI'm trying to develop macros for games. I'm currently coding with vb 2010 and I'm using the keybd_event API. It works great, I've done many working macros but I cannot find a way to send arrow strokes using this API. (Left, Right, Up, Down) I don't want to use the numpad. Here is what I've found: [Code] For some reason, nothing happens, no keystroke seems to have been sent. When I use any other ascii decimal from the ascii table, it does work but not for the arrow strokes.
View 2 RepliesI'm using vb2008 Is that possible to change the pointer from left to right to right to left in the TextBox.
View 4 RepliesI have an app that takes your full name: First Middle(If any) and Last and converts it to UserInitials String. If the name doesn't have a middle name, "X" should be displayed for the Middle Name.
Example name: First Middle Last = FML;
Example name: First Last = FXL
Obviously, if there is only ONE space present, there is no middle name. I'm having issues calling InStrRev to count from the right to the left.
Ex: InStrRev(Name_Input, " ")
Is that possible to change the pointer from left to right to right to left in the TextBox. to became as it show in the pic below.
View 2 RepliesI am trying to figure out how to make a .SubString get the characters from right to left not left to right.Say if a user enters 123456789 in text box 1 and I use textbox1.text.SubString(0,2) it will display 12. But, I want it to get 89.I do not want it to get 98, but 89. I tried textbox.text.substring (0, -2) but that just gives an error.So if Gold is entered it gets ld
Fun
it gets un
VisualBasic
it gets ic
I got a panel that i am adding labels to. I have autoscroll enabled on it so when they fill the viewable space it scrolls. but i need to put the labels to the left unviewable space(when left scroll is already at 0) The label is placed but i dont get the scroll bars and i cant force it to scroll to a - value.
Is this even possible? Same thing with UP.
Or is the Scroll only limited to Bottom and Right?
I want to make an numerical integration method with takes in an analytic function and integrate it over a specific interval. For the numerical integration procedure I want to use some procedures in nr.com. The problem is that these are programmed in C++ and they uses functors to pass a function to the integration method. How can I do this in VB 2010?
I want to initialize the function (i.e. set a=1,b=0 for function y(x)=a*x+b) and then pass the function to the integration method. Then when the integration method call the function it only calls the function with one parameter (i.e. x since a,b is already set)
What is the best way to do this in VB2010?I want to make a general integration method where I can pass any single valued function and integration limits.
I have just started using VB, and from what I have found so far it seems like the tools you have is
- to us a delegate for the function
- to use a lambda expression for the function
- send a pointer/adressOf
- to create a function class/structure and submit this to the function
As for now I am most inclined to create a function-class. But I am not really sure how.F.ex. I make different classes for each "uniqe function" I want to integrate, but how can I pass them to the integration function when I need to specify the argument type in the integration-function-call?This seems like a basic problem which applies to many Math operations, so I think it would be very useful to clarify this.
I'm trying to undersatnd the syntax of calling a funciton and it seem confusing when I'm using a web service in ASP.net. Maybe this question should be in an ASP forum, but it is a VB question. This simple web service allows you to type in your name and it response with an alert box with you name.
My question is, How can you call a function with 2 arguments when the function is only defined for one. I understand that the second argument is actually a method that handling the respons, but how can you interchange function arguments for methods and how do you know that there are methods for
Here's my call:
<script type="text/javascript">
function HelloWorld()
{
var yourName = $get('txtYourName').value;
[CODE]...
I am trying to convert a DLL function call which has the Callback function routine called within the DLL function call.The DLL function call signature is like this:
typedef void *HANDLE;
typedef HANDLE HACQDESC;
DECLARE_HANDLE (HWND);
[code]....
how to convert this DLL call to VB.NET and also how to create the callback function and send it as parameter to this function
call.
i wanted to ask how to make picturebox1 ,to which functions are already assigned, perform the same function as picturebox2 ,to which no functions are assigned.For example:I have already made picturebox1 and have assigned it alot of function like when play button is pressed then picturebox1.visible = true and when we press pause button picturebox1.visible = false. So now i decided to make a theme and have to remove the picturebox1 and want to allow the picturebox2 to havefunction of picturebox1.But when i disable the theme the function of picturebox1 should go back to picturebox1.
View 6 RepliesI have a value in variable, say it is dim a as integer = 145.98 I tried to take the Left(a,2) but it returned an error instead of returning 14 I also tried left(a.Tostring,2) but error is the same.
View 5 RepliesCurrently, I use SendKeys.SendWait("{Left}")
How can I hold the left arrow down?
I am working on a migration project of vb6 to vb.net, in vb they did some string actions with left, right, mid functions. How to achieve the same in vb.net.
View 3 RepliesCan VB.NET Form keyDown event determine whether left or right shift (alt, control) key was pressed? I always receive the same keycode (16) for both left and shift key!
View 3 RepliesWhich one would you prefer to extract a sub-string from the given string and why?I am thinking that since Left and Right are VB functions and not .NET functions, they may cause problems in the future in terms of compatibility.
View 3 RepliesI am trying to take Left(13.123,2)But it returns an error. I also tried to convert this 13.123 into a string but there is the same error.
View 3 RepliesI've noticed a weird problem with VB6 apps (runtime) on the RTM of Windows 7 (replicated it on RC and Beta1 as well).Some standard controls such as the combobox and menu bar suddently do not support right to left properly.In addition, I have VBAME.DLL The VB6 program also can not property of a control change to rtl(right to left)
View 1 RepliesToday, while talking with my colleague, something odd came out of his mind. A "secret" way to handle string coming from vb6, which was like:
[Code]...
A VB2010 program fails to build because it doesn't recognise left() and right(). mid() works, though.
Microsoft.visualbasic.left() works ok.
Yet, in another VB2010 program, left() and right() work ok.