CodeDom To Generate Operator Overload?
Jan 10, 2011
Is there a way to use CodeDom to generate an overloaded operator in Vb.net? I want to generate this:
Public Shared Operator =(ByVal x As MyType, ByVal y As MyType) As Boolean
Return x Is y
End Operator
The closest hack I can think of to do this the following:
Dim eq As New CodeMemberMethod()
eq.Name = "Operator ="
eq.Parameters.Add(New CodeParameterDeclarationExpression(New CodeTypeReference("MyType"), "x"))[code]....
Which generates this, close but obviously wrong:
Public Shared Function Operator =(ByVal x As MyType, ByVal y As MyType) As Boolean
Return (x Is y)
End Function
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Apr 25, 2011
Is there a way to create a delegate instance in .Net using CodeDom? I want to generate something which looks like the following:Dim myDelegate As someDelegateType = New someDelegateType(AddressOf implementingMethod)Below is more info on the context...Original Question:I am using CodeDom from the .Net framework (v3.5 if it matters) to generate a class. One of the classes defines a delegate method which in VB.Net looks like:Public Delegate Function filterByIdDelegate(ByVal obj As Object, ByVal id As Integer) As BooleanI then have a method which will provide the implementation:Private Function filterById(ByVal obj As Object, ByVal id As Integer) As Boolean Return (obj.ID = id)nd FunctionHere's the problem; how do you create an instance of the delegate (using the equivalent of AddressOf for VB.Net)? I am currently doing this (<filterByIdFunctionName> is a string holding the name of the delegate function, `' is the name of the delegate field):
Dim getFunction = New System.CodeDom.CodeMemberMethod()
With getFunction
'Declare delegate instance
[code].....
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May 25, 2009
I recently got a vb book, and the operator overloading sample is quite confusing. understanding why you need to overload an operator, and what's the simplest example?
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Jan 28, 2011
So I'm writing the equality operator overload (Operator =())for a custom object, and the resulting mess of If conditionals is just an eyesore. But so far, it seems like the only sane way to check the values to as to match the specific behavior of this object.
The rules are:Num1 is required, period, and both the left and right operands and must be equal for True. Else, False.Num2 is optional, but if specified, must be present for both the left and right operands, and must be equal for True. Else, False.Num3 is optional, but can only be specified if Num2 is also present. Else, False.Num3, if specified, must be present for both the left and right operands, and must be equal for True. Else, False.
[Code]..
I also know that I could cache elements of the checks into booleans and then use those to reduce the amount of text. But that seems like a waste of cycles just for code readability. So I wanted to know if the SO community had better thoughts on reorganizing it, just in case I'm being too verbose with my checks.
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Mar 5, 2009
I think it is possible to overload the operator() aka "function call" as OdbcDataReader uses it. using OdbcDataReader("myField") is the same as using OdbcDataReader.Item("myField"), I want to be able to do that for my own class, is this possible, how? I've been trying with overloaded operators but no success.
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Jan 21, 2010
I can do this without problem.
Class A
End Class
Class B : Inherit A
End Class
Dim Obj1 As A = New B
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Jan 27, 2010
I am tightening up my coding with the Option Strict set to ON. It has now produced alot of errors. An example of this is:
If AllocatedDGV.Rows(i).Cells("RoomNumber").Value = RoomsAvailableDGV.Rows(j).Cells("RoomName").Value Then
It gives me the following error: Option Strict On disallows operands of type Object for operator '='. Use the 'Is' operator to test for object identity.
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Apr 6, 2012
I need to write an interface to get data to/from our data files.
We have a low level class that holds field values for each record read from the files.
This just holds two values, the value read from the file (DBValue) and the updated value that may need to be written back to the file (CurrentValue).
These values may be any of the standard value types (integer, date etc) or a string.
Either value (DBValue or CurrentValue) may be null if not defined.
I have written the class to manage this data which works fine while option strict is NOT on.
But we have an office policy of having option strict on all the time.
When I put option strict on, my object value comparisons fail with the error: "Option Strict On disallows operands of type Object for operator '='. Use the 'Is' operator to test for object identity."
Question, how should I change the following code to handle option strict on ...
This is all running on Visual Studio 2010
[Code]...
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Mar 10, 2009
Possible Duplicate: Is there a conditional ternary operator in VB.NET?
Can we use Coalesce operator(??) and conditional ternary operator(:) in VB.NET as in C#?
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Jan 5, 2011
Are there any alternatives to Codedom? THe reason I am asking is because Codedom is not letting me use pointers(unsafe code) which is a must in my project. I have hear of the System.emit namespace though.
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Sep 21, 2009
Okay Is there a way In vb.net to create an exe from a predefined script, for example rather than writting the methods and subs into the codedom code could I just have a textbox that I could put a script into and then have that built? (obviously omitting button presses and things.)
Im not worrying about ui's at the moment just and exe (hello world style )
Are there any tutorials for this?
Code: None
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Feb 4, 2009
Does microsoft have documentation on how to use VBCodeProvider and codedom or any .net book that provide detail on how to use it. i tried to use it to compile program on the fly but never work. It always gives me an errors such as path to the string or file not found.
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Aug 14, 2010
I'm trying to see if Codedom can handle strings and concantination between different languages, without me setting up conditional strings per language.For example, I need to generate the following exactly as shown below in both C# and VB.NET via Codedom:
C#
errorMsg = errorMsg.Replace('"', ''').Replace("
", @"
");
System.Windows.Browser.HtmlPage.Window.Eval("throw new Error("Unhandled Error in Silverlight Application " + errorMsg + "");");
[code]....
The CodeMethodInvokeExpression for errorMsg.Replace and System.Windows.Browser.HtmlPage.Window.Eval is simple enough, it's the string inside them that I can't figure out if Codedom can automatically handle.
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Feb 25, 2010
I'm trying to make an application, Where users can insert code, and it will compile a form for me. so like the user inserts
imports
system.net.mail
'user can define the imports
[code]....
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May 25, 2011
I essentially took this and played around with it url...If i build a codedom like the msdn link shows i can generate cs and vb code. However if i read cs or vb code back and try to generate the source in the other language i just get whatever code i originally read from (you'll see cs code in the vb file and vice versa).How do i read in source from one language and generate it to another?
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Apr 17, 2009
[code]I already had to add in bits to the example code to actually name the property to match their example output, I suspect that there is a detail missing that is causing this, but I can't seem to track it down? Whilst the code compiles, I'm unable to use the properties without manually adding in the parameters, which defeats the purpose somewhat.
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Jan 12, 2011
Ok how do I add a text file to a codedom executable?
I don't mean adding a resource file like this ".resources"
I mean adding a textfile to the already existing resources.
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Jun 21, 2010
The following is a program that lets users store business logic for later retrieval by other users.
I am trying to run multiple logical statements pulled from sql server database. one statement may be dependent on another one. I've been compliling the code in a wrapper and In-Memory set to True. I ran 18 logical statements in a loop and it took approx 3 seconds to run. These were simple one line statements containging math and/or If Then's.
Any other methods available out there. please no 3rd party plug-ins.
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May 27, 2007
I'm having trouble with CodeDOM and the VBCodeProvider.I want to generate an abstract class with a MustOverride ReadOnly Property.
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Dec 18, 2010
today I attempted to create a simple application using codedom.Basically I want to be able to compile a messagebox with the custom text entered in the builder.
This is what I have so far.
ICompiler.vb Class "Codedom" Class and in my main form "the builder I have this
[Code]...
If no one could help me perhaps does anyone have a simple source example?
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Jul 29, 2011
in CodeDom you can add a resource with EmbeddedResources like this:
[code...]
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Dec 13, 2011
there is an example from MSDN: 1 solution - 2 projects: service and client like this: service:
<ServiceContract()> _
Public Interface ICalculator
<OperationContract()> _
Function Openserv(ByVal n1 As Integer) As Boolean
[code]....
but the client make an exception "timeout expired"... how can I make it work? maybe use something else instead netpipebinding? I can rewrite this on C#, if it will help. how to call from generated assembly another sub of generates it class?
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Jun 27, 2010
How do you pass a control (say a textbox) to a function as a parameter in compiled assembly using CodeDom? I've tried passing through the args in the Invoke method but it doesn't work.[code]...
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Jun 17, 2010
In my main application i am trying to run Pre-defined Code blocks that the user has created. I would also like to send a DataSet as a parameter when the code is compiled. Is this possible. Currently I can pass in single values by assigning them as a string in the code wrapper through the <%= input %> expression. Then i compile this as source.
[Code]...
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Mar 12, 2010
I have this function in my generator.[code]Despite the data type being passed into the constructor of the CodePrimitiveExpression object being a decimal, the code generated is an integer that gets implicitly converted and stored in a decimal variable. Is there any way to get it to generate with the "D" after the number as in: Public Const DollarAmountMaximumValue As Decimal = 100000D
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Nov 30, 2009
I know CodeDom doesn't support partial methods, but is there a workaround? I found a workaround for C#, but I need one for VB.NET.
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Nov 11, 2009
I want to perform equality comparison in VB.NET and cannot get it to work. Error: value of type Boolean can not be converted to System.Drawing.PointF
[code]...
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May 12, 2011
My resource code:
Dim para As New CodeDom.Compiler.CompilerParameters
Dim Ressources As New List(Of String)
Ressources.Add(Application.StartupPath + "data.dat")
Dim temp As String = Path.Combine(Path.GetTempPath, Path.GetTempFileName)
If Ressources.Count > 0 Then
[Code]...
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Mar 24, 2012
How can you write a VB.NET Windows Forms Application via CodeDom? I have tried everything, the closest i got to it is the code below, which first of all shows command prompt window which is not good, and then shows the form for like a second and everything disappears.
[Code]...
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Oct 23, 2010
I'm fairly new to learning visual basic. I'm trying to create a program that dynamically generates a EXE file that performs mouse movements and keystrokes. To dynamically generate EXE files, I am using the CODEDOM API for Visual Basic.
[Code]...
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