Author: Vitosh

Run Python Functions From Excel With VBA with Shell through CommandPrompt

Selecting Python for a “weapon” of choice has many positive points, which I am not going to describe now. Still, if you want to run python code with the help of VBA and the Shell through the CommandPrompt of Windows,

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VBA – Select Multiple Cells in a Excel Range

Selecting multiple cells in Excel through VBA may be quite a difficult task. Although, using Select is not always a good practice, sometimes it should be done. To generate some random values, let’s run the following:

After this, we have

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VBA – Simulation of Rolling Dices

Excel and VBA are a powerful tool for simulation. The idea is to simulate dice throwing and to keep the best N throws as our score. Other model variables are Times I roll, which stands for how many times do

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How to Search In Excel Worksheet with Python

Working with Python and Excel together is really fun for a VBA Developer! It somehow shows you what all these years of coding with VBA have taught you! Today, I was thinking how to implement the .Find() method of searching in

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Python – Simple writing in Excel with XlsWriter

The XlsxWriter library of Python is a nice gem for a VBA developer – you would be really interested to see the problems a Python developer should be facing, just to achieve a simple part Excel automatization. Still, these are

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VBA – Hide the Named Ranges in Excel

Named ranges are really nice parts of Excel – you just give a name to the range and you start referring it by it. No more Z56 or AM31, the ranges start having names the way you like them. So, one

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VBA – Markov Chain with Excel example

Markov model is a a stochastic model describing a sequence of possible events in which the probability of each event depends only on the state attained in the previous event. Wikipedia This is a good introduction video for the Markov

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VBA – How to Change Merged cell in Excel with Events

The worksheet events which are built within VBA are quite useful. One may build them quite easily in Excel and they work satisfactory. However, let’s imagine, that you have a merged cell as in the picture above and you want

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Book Review – Blockchain Basics

I have missed the probably* easiest way to become rich in the last 1000 years – BitCoin. At the beginning I was thinking it is too small to care about and then I thought it is too expensive to buy.

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“OMG I CAN DO VB6 IN EXCEL! WATCH ME!!!” – Mathieu Guindon about VBA 15 years ago

Mathieu Guindon is the project manager behind Rubberduck – an open-source COM add-in project written in C#, extending the glorious VBE with modern-day IDE features.  On Code Review and Stack Overflow he is closely monitoring the vba tag. Ex-moderator on Code Review  (2015-2018), Microsoft Excel MVP (2018).  

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VBA – How to Find TaxiCab Numbers in Excel – Quick Search in Array

Quick Search for value in Array. In VBA this is sometimes considered problem, as far as people tend to loop through the whole array for the search. There is a better way to do it, with System.Collections.ArrayList, which is not exactly

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Sort a range in VBA with System.Collections.ArrayList Numerically

Imagine you have a task to sort the range from column A based on the number after the last digit. A quick decision is to use Column “B” as a helping column where you write the cell, splitted by the

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.Net – Reading Excel file in C# and transferring it to a matrix

There is an ERP joke, claiming that the third most popular button of an ERP system is “Export to Excel” (after OK and Cancel). Thus, working with Excel from .Net is happens often. There are some pitfalls, that you should

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VBA – Delete / Remove rows from a specific worksheet in Excel

Imagine one of the most trivial tasks in Excel – remove rows from Excel, for which contain the number 1 in their first column. Or in the column below, these are the rows, which are selected. If you are familiar with

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VBA – Avoid nested loops with recursion (Part 2)

About two years after the “Nested loops with recursion” today I was looking for a way to avoid nested loops with recursion in google and found my article 🙂 . Lots has changed in my coding style since then as

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VBA – Formulas in Excel LocalFormula

The formulas in Excel, used through VBA are not easy. You need to write a string like “=IFERROR(OR((1=A1),(2=A2)),””No Error””,””Error””)” and this is really not easy and fun to debug. Furthermore, if it is false, VBA will nicely throw a runtime

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How to pass Microsoft exam 462

This month I have passed Exam 70-462: Administering Microsoft SQL Server. Thus, officially I am a MCSA in SQL Server 2012/2014. Concerning the exam – it is tough! In order to pass it I have studied for about 6 months. The

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VBA – Difference between Trim, VBA.Trim, =Trim() and WorksheetFunction.Trim

Trimming is a function, that reduces spaces. There are at least 4 ways to Trim a string in Excel/VBA: Trim VBA.Trim =Trim() WorksheetFunction.Trim Thus, is there a difference between these 4 actually? This is what MSDN says about String.Trim: Returns

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VBA – What day is Friday in the week of a given date?

Imagine that you want to check when is Friday for the week of Christmas in the next 10 years. In general, the week of Christmas is the week that contains the 25.December. Getting a given day from a given week

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C# – Looking for a value in Excel with C# & VisualStudio

Using Visual Studio and Excel is actually quite fun – the Visual Studio advanced environment provides a bit more possibilities than the Visual Basic Editor, built-in Excel. In this article, about a year ago I have shown how to loop

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Why Range.Find() sometimes mistakes January with November and Febrary with December in VBA?

After writing that the built-in Find() function in VBA does not return the first value by default, a new interesting case with the Find function appeared. In order to simulate it, the following task could be imagined: Write the first

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VBA – Select a Single Node XML

Selecting and working with XML in Excel and VBA is always a bit challenging. Whenever a programmer (or a developer or an analyst or a portfolio controller) hears about XML and VBA, something weird happens in their minds. The programmer

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VBA – ArrayList class – a helper to sort arrays in VBA

If you are coding professionally in VBA, most probably you are using arrays every now and then and you have your own function for sorting an array. Something like this bubble sort or anything similar is what you have written

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Algorithm testing system, reading from text file with VBA

For the people, familiar with my blog, it is known that usually I am resolving problems from Codeforces.com.  Codeforces supports plenty of languages, unfortunately VBA is not one of them. Thus, I have decided to build up a small algorithm

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The dates in Excel, VBA and SQL Server

There is a lot over the Internet, written for the dates in Excel, VBA and SQL Server, but still, there is quite much to be written. In general, it all has started, when the developers of Lotus 1-2-3 have decided

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VBA – Sum array with recursion

This is what Wikipedia says about Recursion: Recursion occurs when a thing is defined in terms of itself or of its type. Recursion is used in a variety of disciplines ranging from linguistics to logic. The most common application of recursion is in mathematics and

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VBA – How to refer a function ByVal, when the parameter is explicitly ByRef

Ok, you have read the title correctly – there is a way to refer a parameter ByValue, even though the parameter contains explicitly the word ByRef in it. Let’s start with the functions. Imagine a function, getting an array as parameter

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VBA – Find function in Excel does not return the first value by default

The Range.Find() function in VBA-Excel is quite a tricky one. In general, you may think it is straight forward, because it usually returns what you are looking for, until the moment when it simply surprises you. This is the MSDN description

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VBA – Type Declaration Suffixes

If you are coming from the .Net world, then you are used to declare variables like this:

In this case, both foo and bar are of type Long. Then, someone tells you that you want to switch for a

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VBA – Attributes. The high-end in VBA.

You have probably noticed, that whenever you export a class module from the Visual Basic Editor, you get some strange lines in the exported file, above the Option Explicit. This is something, that you have not written, but it is

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