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Showing posts with the label VB.NET

Error: the type or namespace name does not exist in the namespace using visual studio 2017

When compiling an error will occur that a name space does not exist. An example error like the message below:
The type or namespace name 'Microsoft.Office.Interop.Outlook' does not exist in the namespace 'Microsoft'(are you missing an assembly reference?)
The system is trying to find a reference for a specific namespace or dll.
One solution for this is to add the reference to the missing namespace.
Find the “solution explorer” window like the image below:

After opening the “solution explorer” window, right click the name of the project just below the solution explorer. Beside the C# icon.
A new window will open like the image below. Click “Add”, then click “Reference”.

After clicking “Reference”, the “Reference Manager” window will open.
Click “COM” option, then use the filter option to go directly to the desired namespace or reference. Since the error is a Microsoft namespace, type “Microsoft” and “Microsoft” namespace will be filtered from the list. See image below…

Excel Macro get cell values but skip other rows

Raw data that comes in pattern is easy to handle for further processing.
For example, if you have a data that has final value in every 7th row, so basically 1 to 6 is not needed and 7th row is needed, likewise 8th row to 13th row is not needed and 14th row is needed and the pattern goes on that every 7th row is the final data from the previous 6 rows.
If the pattern continues, it will be like: 1-6, 7 final value, 7 -13, 14 final value, 15 to 20, 21 final value, 22 to 27, 28 final value and the pattern goes on up to hundreds or thousands. It will be time consuming to get every 7th row manually.
For graphical representation it will be like:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
From the image above every 7th row (green color) is needed and the rest is discarded.
Other issue comes in if the data has to be processed further in another sheet, doing this manually is so tedious and prone to error.
This is where VBA or Excel macro comes into play and simplify the process. The “step” keyword in VBA or even VB…

Disable Maximize and Minimize control in a form using Visual Studio

How to disable minimizing and maximizing a form in C# or
How to create a border less form in Visual Studio?
Images below shows how to disable maximize and minimize control in a form.
Image below shows how to deactivate maximize option in a form:

Image of a form that does not allow maximizing:

Image below shows how to create a border less form, creating a border less form should provide an option within the form how to close the application.

Image of a border less form:

Till next time.. Have fun creating apps in Visual Studio...

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Loop thru custom Textboxes name in VBA or VB.Net

Having a custom name in Textboxes, Listbox, ComboBox in VBA or VB.Net is a good strategy. So, it will be easy to debug the code or analyze the data.

If just relying on the default names is also good but it will get messy and it will be hard to control when there’s quite a few of textboxes, and list boxes. And the next person who will maintain the code will find it easier to debug or check the program when proper custom name is assigned to the controls. And that next person might be yourself. So, be gentle and be explicit in giving comments and assigning names to controls.

It doesn’t hurt to put a clear comment or an overview of what the piece of code does or what’s the input that the control is accepting. Because greediness breeds greediness, and it will bite back.

Anyway, to loop to all the custom or default names is quite easy.

Example, if there are 30 or more textboxes in a form. It can be done by a simple for loop like:

For x = 1 to 30

GetTboxvalue =    Me.Controls(“Textbox” & …

PowerShell get folder capacity

Get the folder capacity using PowerShell via the old-school method.
Old-school since we will utilize the native “dir” command, just like the good old days of DOS.
PowerShell dir command output is not the same with the native windows system32 dir command line just like in DOS system.
The output will be in bytes since it is from the command line but of course, if you are command line junkie it will be easy to read even if the capacity is written in bytes.
First, fire up notepad write the dir command plus the full folder path of the specified folder in which you like to monitor or want to know the capacity.
 dir “c:\users\dmusic\music folder 001”
The path is enclosed in quotes since the folder has spaces and save the notepad as a batch file with “.bat” extension.
Open PowerShell command line window or PowerShell ISE and type the following command:
#change the path to where the batch file was saved
$folder_base_cap = d:\read_folder_cap.bat 
$ folder_base_cap | Select-String "bytes&qu…

Sort numbers, digits or figures in Excel 2016

To sort numbers, digits, or figures in Excel 2016 is quite straight forward.
There are two ways to do it via the Home tab or Data tab.
What is found on the Home tab is sorting of alphabets or A-Z option which can easily be seen beside the auto-sum function which is on the right most tab of the ribbon by default.
Screen shot below shows the sorting functionality found in Home tab.

The other way to sort by numbers, digits or figures in Excel 2016 is to click on “Data” click on “Sort” then an option will appear to sort by smallest to largest or largest to smallest.
A screen shot below shows where to find the function.

That’s it hopes it helps to make thing easier.

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How to escape in PowerShell

In bash script the backslash is use as escape sequence and even in Java programming.

But what's the equivalent of bash escape sequence in PowerShell?

Grave accent or back tick, which is found at the top left corner of the keybord below the "esc" key on some keyboard, This character "`" is the escape in PowerShell.

For example:

Write-host "This line is above `r`n and  `r`n this line is below"

Output is:
This line is above
 this line is below

r is equal to carriage return character putting a backtick before r, `r tells PowerShell that r is not a character but a carriage return
n is a new line character putting a backtick before n, `n tells PowerShell that n is a new line character.

Another example:

$ sign in PowerShell is to indicate a variable

But what if you need to display a dollar sign as a character and not as a special character to declare a variable. Then we need to escape the dollar sign by prefixing a backtick before the character.


Excel VBA load all text files to listbox

Get all text files in a specified path to a  userform listbox using VBA.

The code below will read the directory for all text files and its filename will be loaded to listbox.


Dim fs, f, fc, f1

    Set fs = CreateObject("Scripting.FileSystemObject")
    Set f = fs.GetFolder("C:\text_folder")

    Set fc = f.Files

    For Each f1 In fc

        If InStr(1, f1.Name, ".txt") Then

           'add all filenames to listbox
           UserForm1.ListBox1.AddItem f1.Name

        End If



Happy coding!

Cheers..till next time.

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Excel VBA copy or reference a value

Excel VBA provide options on how to pass value from worksheet to worksheet or from workbook to another workbook.
To optimize or make the VBA code run faster is to make the worksheet interaction lesser.
Recording an Excel VBA macro to copy and paste a value will have a similar output to the code below.
Sub Macro1() ' ' Macro1 Macro '     Range("A2").Select     Selection.Copy
    Sheets("Sheet2").Select     Range("A3").Select     ActiveSheet.Paste
End Sub
what the code does is to select the cell on the active sheet for copying and select another worksheet and select the cell where the value will be placed and paste the copied cell value.
Steps are: a. Select the cell and copy the value b. Select the worksheet where the value is to be copied c. Next step, is select the cell on the selected worksheet d. Paste the value on the cell
Steps are absolutely fine, if it works as expected. But if you are copying hundreds or thousands of cells. It will be a w…

Excel find last row with value in a specific column

1. How to find last row with value using vba in a specific column?

2. How to find last row with value  using vba in a worksheet?

The questions above are entirely two different scenarios.

The first question will find the last row with value in a specific column within the worksheet.

While the second question find the last row with value of the entire worksheet.

The first question is applicable if you need to find the last row in different columns.

Let's say Column 1 or Column A, or Column 2 or Column B etc.

Example code below will find the last row in a specific column via VBA code.

'command Cells(Rows.Count, 1) = find the last row with value in Column 1 for Sheet3

Dim last_row As Integer

last_row = Worksheets("sheet3").Cells(Rows.Count, 1).End(xlUp).Row

Msgbox last_row

'replace 1 with the desired column 
'ex: command Cells(Rows.Count, 7) = find the last row with value in Column 7

If you don't need to specify a worksheet or…