I am working on MVC3, i have a situation where i want to do something like this:
<Div>
@Code
Dim i = 1
[Code]....
but razor is throwing wrong syntax error message. how to do this properly in side razor code.
Using MVC3 and Razor View engine, I created a VB.NET web application in VS 2010. This creates the default Account and Home Controller along with corresponding Action Views.Now if I open any vbhtml file I get the following error message in the Error List window.
Error 50 Syntax error. C:****MVC3AppVBViewsAccountLogOn.vbhtml MVC3AppVB
(See screenshot here http://www.flickr.com/photos/7672540@N07/5469248676/)
[code].....
I've the following code for a DropDownListFor and is working ok
@Html.DropDownListFor(Function(model) model.Habilitacoes, New SelectList(ViewBag.Habilitacoes, "KeyHL", "DescricaoHL"), New With {.class = "FillHSpace"})
[code].....
How do I modify or create my own Html.ActionLink helper to accept and handle the first parameter (linkText) passed in as an empty string / nothing?Details: I currently have a strongly typed view that's passed a model which contains search results. My view loops through each item in the model and attempts to display a link to a contact with the following code:
@Html.ActionLink(currentItem.ContactName, "contact", "details", New With { .id = currentItem.ContactID }, Nothing)
Normally this would work just fine, but not every item in my search result has a ContactName. The Html.ActionLink helper errors when this first parameter is empty. In case it helps, here's the model property for ContactName (which is generated from a template due to Database First, so I don't believe it can be modified):
Public Property ContactName As String
I'd like to have a helper function that simply returns nothing if the ContactName is an empty string / nothing.I'm guessing I need to extend this helper, and I've struggled to find any good, up-to-date resources in VB.net for extending helper functions. Other approaches are more than welcome if they're considered best practice. I'm working in VB.net, MVC3, and Razor in the ASP.net 4.0 framework.
How do I reference a Namespace in .NET MVC3 with the Razor view engine?
I understand this can be done in C#:
@using Namespace;
However in VB this doesn't seem to work:
@Imports Namespace
(i'm talking about inside a .vbhtml file)
How does one declare a readonly local variable in VB.Net? Java and C++ have final/const local variables so I'm sure VB.Net must have them, but I just can't find the syntax for it.
View 2 RepliesI have a button inside a one of my forms which contain a lot of coding and normally a lot of variables declaration.
Is there is a option/add-on that I can use/set that enable me to display all the variable used inside the sub or function I am currently working in?
All I can find is add-on to display the Properties/Methods and only Public variables inside the form or inside the class. but I need to list the local variables also.
MVC 3 is great but in some cases I am having trouble translating the Razor syntax. Anyone know of a good VB.Net Razor reference?
View 1 RepliesTrying to create VB.net equivalent for following code and I get error
<ul>
@for (int i=0; i < ViewBag.NumTimes; i++) {
<li>@ViewBag.Message</li>
}
</ul>
In the MVC 3 book by Steven Sanderson on p185 at the bottom, the following expression is used to render the paging links.
@Html.PageLinks(Model.Paginginfo, x=> Url.Action("List", new {page = x}))
What is the VB.NET equivalent? I am stuck on the x url lambda bit.
I am new to Razor view syntax and as most of the examples are in C# in coverting the below Razor syntax to vb.net
<div>
@using (Html.BeginForm())
{
[code].....
This should not be as hard as it seems to be, but I can't for the life of me create a table in VB using Razor syntax. The following does not work (despite what some examples would lead me to believe):[code]
View 2 RepliesWhen I open two very small MVC 3 partial view file (*.vbhtml) in Visual Studio 2010 Express SP1, I get a "Syntax Error." with no Line or Column defined. Visual Studio does not tell me what's wrong with these partial view.
View 3 RepliesI am using the AJAXToolkit Accordion control and dynamically adding panes to it based on a query of the database. For example:
Jane logs in and pulls up the page with the accordion on it. In the database she has five rows in the todo_list table. So, I need to dynamically generate five panes that contain the info. from the table...but if Joe logs in he may have only three rows, and Josh may have fifteen - so I can never know how many an individual will have beforehand.
So, I need some way to dynamically name the variables (or is there another way to do this). For example, here is some pseudo-code of what I'm trying to accomplish:
Dim i as integer
For each row in todo_list
Dim ap + i as New AccordionPane
Add some info from the row to the pane
Next
I have a datetime variable (00:00:00) and I like to increment with a timer every seconds...minutes.. hours...etc...
View 7 RepliesI have the following code
Protected Sub btnAdd_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAdd.Click
Dim counter As Integer = 0
Dim t As DataTable = DirectCast(Session("MyDataTable"), DataTable)
Dim row1 As DataRow = t.NewRow()
If (isUnique(t) And counter < 30) Then
row1("ID") = counter + 1
[Code]...
I know which elements that I need to capture which are the everything between these two elements <a href="everything inside the quotes"What would the syntax for this look like in VB.NET using regular expressions? Also how can I input the results into a richtextbox?
View 1 RepliesI have webcontrol inside windows application now i want save image inside page on my local hard disk?
I am sure this has had to have been answered somewhere but after looking on the web I cant find anything addressing variables in variables. For instance say I have var1, var2, var3, var4 decalred. How can I create a loop assignment? Something like var & i = "variable 1". So instead of "var1" I have the numeric piece be a variable.
View 2 RepliesI stumbled upon something i don't quite see the logic of. Let's ork with following piece of code:
For Each ds As DerivedScale In List
If ds.ScaleID = scaleId Then
ds.ScaleID = ds.ScaleID + scaleStep
[Code].....
This piece is written for 2 records to change place and change the sequence number (scaleid). The arrow indicates where the issue occurs. The item "ds" is replaced by the object 1 indexnumber higher/lower. This does however not effect that object in the List. So when i check, item ds isn't set.
However, when i look at ds.ScaleId = ds.ScaleID + scaleStep, this is reflected in the List.
So what I am wondering is: is "ds" acting like a local variable here, and can i only make changes to it's properties?
I'm writing a subneting calculator in VB.NET.I'm using the IDE SharpDevelop.Well my problem is I'm using a function to do some calculations and then to figure out the class of the IP addresses.Well I pass a variable from the subroutine, that is accessed when a button is clicked, to the function then the variable is passed back to the subroutine and then the variable is passed again to another function but when it reaches this second function it doesn't retain the value it was given in the first function.I'm not sure if I'm just passing the variable wrong or if this is how it works.I know I can make this work probably by using global variables but I'm not sure if this is proper. So my ultimate question is what is the difference between local and global variables besides just scope and should I try and use one more than the other.
View 4 RepliesI sort of understand why this is happening, but not entirely. I have a base class with a Shared (Static) variable, declared like so:
Public Shared myVar As New MyObject(arg1, arg2)
In a method of a derived class, I set a local variable like so:
Dim myLocalVar As MyObject = myVar
Now when I do something like myLocalVar.Property1 += value, the value in Property1 persists to the next call of that method! I suppose I get why it would be happening; myVar is being set by reference instead of by value, but I've never encountered anything like this before. Is there any way (other than my workaround which is to just create a new object using the property values of myVar) to create myLocalVar by value?
Does anyone know why a local variable cannot be declared WithEvents?T
View 3 RepliesI have a form in VB.NET that is used as a dialog in a mainform. Its instances are always locally defined, there's no field for it. When the user clicks the OK button in the dialog, it will fire an event with exactly one argument, an instance of one of my classes. Since it is always a local variable, how can I add an event handler for that event?
Code for the event, a field in MyDialog:
public Event ObjectCreated(ByRef newMyObject as MyObject)
Code for the main form to call dialog : (never mind the syntax)
Dim dialog As New MyDialog()
dialog.ShowDialog(Me)
AddHandler ObjectCreated, (what do I put here?) //Or how do I add a handler?
is this safe (I know it works, but is it safe)? Is it returning a reference to a local variable, wich falls out of scope as soon as the function returns?
Public
Function myfunc() As String
Dim strXml As String
[code]....
I just need some sample code to save the blue values to an xml file as shown below:
textbox.size =48
textbox.font.colour = Blue
Saved to c:myfile.xml as
[Code]....
Sub WriteEOFData(ByRef FilePath As String, ByRef EOFData As String)
Dim sFileBuf As String
Dim RoPepfMiyYgyrTfLY7YxdpSoSOycKgR06b1oCptGcO As String
Dim lFF As Integer
Try
[code]....
say i have an auto property Public Property P As Integer and everytime I want to read this variable P in a function, i will declare a local variable as such: dim _p = P then read _p instead of P. I'm wondering does it make sense at all? will it actually make things slower (which of course isn't my intention).Btw if we change the question to Public Property P As Object is there any change in the answer?
View 7 RepliesI am getting 6 unused local variable error messages. If I comment out the variable, I get en error because it really is in use. I tried re-building project.
error
Warning 2 Unused local variable: 'sqlCustomerInsertTicketConn'. C:UsersJeffDocumentsVisual Studio 2008ProjectsJeffComputersPOS1JeffComputersPOS1Module1.vb 1741 17 JeffComputersPOS1
Public Function MethodOne(ByVal s As String) As String[code]...
I want to retain the value of i, but once it goes back into MethodOne, it loses its value. I tried making it static i As integer = 0, but this did not work.