Excel Visual Basic Variables, Part 1: Variable Types
Subscribe to continue reading
Subscribe to get access to the rest of this post and other subscriber-only content.
Subscribe to get access to the rest of this post and other subscriber-only content.
The macros you recorded in the previous post are stored in an Excel file. To edit it you use what looks like a separate program, the Visual Basic Editor. Open it with the Developer ribbon (Code group) > Visual Basic Editor (Alt+F11). You will find newly-recorded macros under Modules in the explorer on the left…
A major reason to program Excel Macros is to get the spreadsheet to do something. This post is a goldmine of useful Excel Visual Basic code for talking to Excel. You can get use the routines stand-alone. Alternatively, you can save retyping or copy-pasting: Get the file Macros.xlsm free of charge from us. 1. Table…
The Manning formula for open-channel flow is: whereV= Velocityn = Manning’s “n”,r = Hydraulic radius = area / wetted perimeter = b*y / (2*y + b) for a rectangular channel (where y = depth and b = width), ands = slope of channel (m/m). Discharge Q = V*A = V*b*y. We cannot solve this…
It is difficult to make your program foolproof, because fools are so ingenious! Even so, one should make an effort to trap and handle errors. You should not let the program simply crash if there is a problem, whether due to bad data, faulty calculation, or whatever. This is what we call Error-Handling. Excel Visual…
The built-in dialog boxes, MsgBox and InputBox$, are very useful for getting input from the user. But sooner or later you will want to go further. You might, while running code, want the user to make a choice from a list, or between several options. For this, you want a UserForm. For example: The program…
You can use Excel Visual Basic to read and write text files (Sequential and Random file access). But we will not touch on text files in this post. Rather, we will look at how to save and open Excel files using Excel code, plus a few valuable functions: The bigger examples below are in the…