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Thanks, I gutted everything and rewrote most of it using the following code (give credit to where credit is due!). The code below actually makes a new datatable with rows containing the unique...

I am trying to get all the distinct string values (categories) from a text field in a datatable called MyDataTable. The datatable does have data since the rows>0 and columns>0 and I know the field...

Thanks, and yes, there are a lot of changes that must be made with the C# translations of various VB.NET apps I am converting -- in order to get them to run w/o exceptions. However, I do like the...

Found an answer, since this works:



try
{
if (((Form1)Owner).timer1 != null)
{
if (((Form1)Owner).timer1 ==...

Timer 1 on Form 1 is defined as follows:


public System.Timers.Timer timer1 = new System.Timers.Timer();

However, the intellisense has red underscores on the "Form1.timer1" in the...

Thanks very much, a great description, and quite valuable!

Thanks, I looked further and arrays/lists are a reference type so the recommendation is to not use speed or memory concerns when choosing ByVal or ByRef. ByVal should be used if you don't want...

That's what I thought about ByVal. I had previously checked if elements of arrays passed ByVal to a sub (method) were different after the method call, and they were - so ByVal will return altered...

I wanted to bounce this question about memory considerations toward the user community.

Let's assume you have two double arrays like x(500000, 100) and y(20, 20), where x(,) is very large but...

On the other hand, if I uninstall system.data.sqlclient in nuget, and make sure the imports does not include the namespace, why is the app looking for the sql assembly?

Since I am using JSON, there are numerous JSON dependencies for System.Data.SqlClient listed throughout the app. Thus, I made sure the latest assembly was installed using Nuget, and the Imports...

Thanks!

I am using the VS2022 template (project) for setup and deployment. I am not using any sql in the Winform app (.NET 7.0). Occasionally, when compiling (building) the assembly, the assembly will...

Thanks, it only happened once. After new runs, it works like a charm. No issues.

Thanks - it worked once during the first debug run, but on the 2nd and 3rd debug runs, it didn't return anything. Is there a handle in windows that needs to be released, or should I dispose...

I can successfully fetch the inner text from google.com/index.html using the code below, but must click on a button. However, I would rather invoke an Await somehow to set the value of the sHTML...

I noticed that when I export to Excel from a DGV, the export leaves out cells to the right and below an empty cell (with Nothing or Null in it), i.e., terminates at that cell. I am using a dbNull...

Thanks!

It appears that after I moved the following three lines before the loop that adds row numbers to the row header values, it will work. I checked if dgv.TopLeftHeaderCell.Visible was True, and it...

Since row headers are not persistent in the DataGridView (DGV), I use an AddHandler to call the method below, which adds row header numbers whenever the DGV is shown or modified. You will note that...

@PlausiblyDamp - the dispose method for all classes is provided in the OP. The methods typically contain mostly double[,], byte[], integer[], and sometimes dictionaries, lists - and I don't think...

@PlausiblyDamp - There are just a few arrays and lists that are defined at the class level. None of the classes have properties. But the major math method has a lot of arrays and variables that...

@PlausiblyDamp - I am concerned about the classes being disposed. Each class constructor (i.e., Sub New(,,,)) starts a major threaded method that does a lot of math, withs call to other methods in...

@dbasnett - Thanks - I do like the standardization of code regarding all the parameters. Using this approach I could first document (write down) a unique list of parameters (many are re-used),...

Thanks, but there's too many classes and too many different parameters. Thus, my earlier reply with "...params 1,2 for class MyMath1, params 3,4,5,6,7 for MyMath2, and e.g. params 8,9,10, for...

Thanks for putting this together. I understand your logic and approach. Now specifically, a lot of the parameters are different for each math class - as the use of params 1,2,3 was a sort of...

At run-time, my Winform app starts (instantiates) multiple classes which are all IDisposable. Each class spawns a threaded method which often has long run times (several minutes).

If a run only...

Okay, thanks. I like that .NET 7 winforms project.

Thanks, I got the Invoke to work within Form 1 by simply calling the Appendtreeview method. (All code is now provided above). Outside of Form1, when using the delegate, as long as I invoked with...

Using code converted from VB.NET, I can successfully invoke a public delegate (from code within Form1 or code in another class) that calls a AppendTreeview method in Form1. However, the 2nd time the...

Thank you, it works perfectly. I guess that would mean that in VS2022 (i have Pro) methods are colored gold, like ToString, so it needs ()?

I converted the following from VB.NET code (when Option Strict=On) and am getting red underlined errors from Intellisense on two lines. I need to spend more time on this, which will take a while,...

Okay, got it, will set Strict On.

In My VB.NET Code, it is apparent that VB.NET will allow an object that is essentially a List to be looped through while C# does not. Below is the VB.NET code:


Dim dicData As New...

Thank you, that worked in C# like you said.

I am getting stuck on the following VB.NET conversion to C#. The VB.NET code works in VB.NET (VS2022 Pro), but has some issues in C#, nameley, that StringType does not exist and the ! cannot be...

okay, got it. Thx.

Thanks for the rapid reply -- I follow what you are saying. JSON doesn't understand what the object type is supposed to be, even though the array elements are all integer values when serialized. I...

I just ported a Winform app from .NET Framework to .NET 6, and after serializing and deserializing an Object type array via JSON, I learned that all of the returned elements of the Object array are...

Got it, thx.