Color Scale Advanced Excel VBA, C#, VB.Net Code Example ColorScale object in Excel

Color Scale

Refers to conditional formatting rules. All conditional formatting objects are contained within a FormatConditions collection object, which is an underlying child of a Range collection. You can create a color scale formatting rule by using either the Add() or AddColorScale() method of the FormatConditions collection.

Color scales are visual guides that help understanding data distribution and variation. There are two types of scales can be applied to a range of data either a two-color or a three-color scale. For a two-color scale conditional format, you assign the value, type, and color to the minimum and maximum thresholds of a range. A three-color scale also has a midpoint threshold.

Thresholds are determined by setting the properties of the ColorScaleCriteria object. The ColorScaleCriteria object, which is a child of the ColorScale object, is a collection of all of the ColorScaleCriterion objects for the color scale.

Lets put code around to automate the same. In this article we are using VSTO (Visual Studio Tools for office) in both flavors (C#, VB.Net) and VBA (Visual Basic for Applications) hence following prerequisites are recommended:

Prerequisites

Visual Studio 2015 or above having Microsoft Office for Developer Tool installed
Create Excel Addin in C# or VB code style (Visual Studio Tools for Office)
Excel 2010 or above
Create a ribbon designer and put button

C# code example

private void btnColorScale_Click(object sender, RibbonControlEventArgs e)
{
	//Retain user selection
	excel.Range oRange = Globals.ThisAddIn.Application.Selection;

	//Add 2 colors scale
	excel.ColorScale oColorScale = oRange.FormatConditions.AddColorScale(2);

	//Set the minimum threshold to red and maximum threshold to blue
	oColorScale.ColorScaleCriteria[1].FormatColor.Color = excel.XlRgbColor.rgbRed;
	oColorScale.ColorScaleCriteria[2].FormatColor.Color = excel.XlRgbColor.rgbBlue;
}

VB.Net code example

Private Sub btnColorScale_Click(sender As Object, e As RibbonControlEventArgs) Handles btnColorScale.Click
	'Retain user selection
	dim oRange as excel.Range
	oRange = Globals.ThisAddIn.Application.Selection

	'Add 2 colors scale
	Dim oColorScale As excel.ColorScale
	oColorScale = oRange.FormatConditions.AddColorScale(2)

	'Set the minimum threshold to red and maximum threshold to blue
	oColorScale.ColorScaleCriteria(1).FormatColor.Color = excel.XlRgbColor.rgbRed
	oColorScale.ColorScaleCriteria(2).FormatColor.Color = excel.XlRgbColor.rgbBlue
End Sub

VBA code example

Sub ColorScale()
    'Retain selection
    Dim oRange As Range
    Set oRange = Selection
    
    'Add 2 colors scale
    Dim oColorScale As ColorScale
    Set oColorScale = oRange.FormatConditions.AddColorScale(ColorScaleType:=2)
    
    'Set the minimum threshold to red and maximum threshold to blue
    oColorScale.ColorScaleCriteria(1).FormatColor.Color = RGB(255, 0, 0)
    oColorScale.ColorScaleCriteria(2).FormatColor.Color = RGB(0, 0, 255)
End Sub

Output

Please leave your comments or queries under comment section also please do subscribe to out blogs to keep your self upto date.

Share on Facebook

Export Generic Collection to PDF ASP.Net Core MVC

PDF Sometime you may in need to export data in PDF. Following code will use Syncfusion Package and give you ready made Table pushed from Generic collection. Put below code in Repository Put below code in Controller JavaScript Code Finally you can attach id to an element in html and in JavaScript on Document ready […]

Export Excel ASP.Net Core MVC

Excel Export Following Example helps you to export excel from database in a generic way using EPPlus library. Requirement EPPlus Nuget Package Code to Repository Supporting Method Code to Controller Code to JavaScript JavaScript Supporting Method You can hit ExportToExcel() call in document ready method in JavaScript document by pointing any id written in HTML […]

Save/Retrieve Session ASP.Net Core MVC

Session Plays a vital role while dealing with caching in your browser. ASP.Net Core offers Session caching fast and reliable way. Here is the practical example. Put following code anywhere in common class or Repository, it has two methods Generic in nature Add/Get. Add Method will allow you to cache object in Browser memory and […]

Number List in Word Document using C# code example

Number List Microsoft Word offers feature by which you can auto number your list in various formats. In this article we will write code to dynamically generate a numbered list in a document using C#. C# Code example Note: You have to add Microsoft Word Interop library as reference to enable Using statement or create […]

Sorting in Microsoft Word using VBA (Visual Basic for Applications)

Sorting Do you know, Microsoft Word has capability to perform sorting over a document. In this article we will write code to sort paragraphs in Alphabetical order using visual basic for applications code. Before code Code example Put above code in a module, Select number of paragraphs that you would like to sort in A-Z […]

EPPlus Open Office Xml Office solution using C#

EPPlus Is an open Office XML solution, highly useful library capable to manipulate Microsoft Excel similar to Introp APIs. Why EPPlus? As per Microsoft the solutions (Excel, Word, PowerPoint, Outlook etc) built for client architecture but what about Servers? Let’s take an example that I have recently faced and EPPlus helped me a lot here. […]

String vs StringBuilder C#.Net with code example

String C# class which offers capability to store any type of string data into a variable. Strings are immutable (non-modifiable) cause performance overhead because each time we modify a string it creates a copy of modified instance into the memory, hence, as a practice string should be avoided for large string operations. Following is the […]

Var vs. Dynamic C# with code example

Var vs. Dynamic C# offers variety with flavors to accomplish the task to the developers. var keyword defines a static nature which gets resolve at compile-time introduced in C# 3.0 where dynamic gets resolved at runtime introduced in C# 4.0. Var is a statically type variable, which means values of these variables gets decoded at […]

Multi-threading in C#.Net with step by step code example

Multi-threading Is a concept to execute multiple tasks or process simultaneously. Basically multi-threading enables paths to your application to execute multiple processes. Multi-threading can be achieved in C# using System.Threading name space which provides complete control over threading. Let’s write example code where we will execute two different methods to print numbers using loop and […]

Create a progress bar in Excel using VBA (Visual Basic for Applications)

Progress bar In this article we will create one progress bar using Excel vba with step by step example. User can change feel and look of the UserForm as per their need and mimic the logic to fit in their solution. Design Insert a user form Add one label on it and change Caption property […]

Color Scale Advanced Excel VBA, C#, VB.Net Code Example