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Merge pull request #174 from SyncfusionExamples/261512-TrafficLightFaqExample
261512-How to set traffic lights icon in Excel conditional formatting using XlsIO?
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‎FAQ/Conditional Formatting/.NET/Traffic lights icon/README.md‎

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# How to set traffic lights icon in Excel conditional formatting using C#?
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Step 1: Create a New C# Console Application Project.
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Step 2: Name the Project.
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Step 3: Install the [Syncfusion.XlsIO.Net.Core](https://www.nuget.org/packages/Syncfusion.XlsIO.Net.Core) NuGet package as reference to your .NET Standard applications from [NuGet.org](https://www.nuget.org).
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Step 4: Include the following namespaces in the **Program.cs** file.
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```csharp
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using System;
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using System.IO;
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using Syncfusion.XlsIO;
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```
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Step 5: Include the below code snippet in **Program.cs** to set traffic lights icon in Excel conditional formatting using C#
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```csharp
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using (ExcelEngine excelEngine = new ExcelEngine())
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{
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IApplication application = excelEngine.Excel;
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application.DefaultVersion = ExcelVersion.Excel2013;
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IWorkbook workbook = application.Workbooks.Create(1);
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IWorksheet worksheet = workbook.Worksheets[0];
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//Add data and formatting to the worksheet
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worksheet.Range["A1"].Text = "Traffic Lights";
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//Add percentage values to cells A2 to A7 and format them as percentages
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worksheet.Range["A2"].Number = 0.95;
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worksheet.Range["A2"].NumberFormat = "0%";
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worksheet.Range["A3"].Number = 0.5;
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worksheet.Range["A3"].NumberFormat = "0%";
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worksheet.Range["A4"].Number = 0.1;
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worksheet.Range["A4"].NumberFormat = "0%";
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worksheet.Range["A5"].Number = 0.9;
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worksheet.Range["A5"].NumberFormat = "0%";
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worksheet.Range["A6"].Number = 0.7;
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worksheet.Range["A6"].NumberFormat = "0%";
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worksheet.Range["A7"].Number = 0.6;
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worksheet.Range["A7"].NumberFormat = "0%";
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//Adjust row height and column width of the used range
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worksheet.UsedRange.RowHeight = 20;
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worksheet.UsedRange.ColumnWidth = 25;
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//Apply the first conditional format
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IConditionalFormats condition = worksheet.UsedRange.ConditionalFormats;
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IConditionalFormat condition1 = condition.AddCondition();
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condition1.FormatType = ExcelCFType.CellValue;
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condition1.FirstFormula = "300";
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condition1.Operator = ExcelComparisonOperator.Less;
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condition1.FontColor = ExcelKnownColors.Black;
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condition1.BackColor = ExcelKnownColors.Sky_blue;
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//Apply the second conditional format
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IConditionalFormats condition2 = worksheet.UsedRange.ConditionalFormats;
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IConditionalFormat condition3 = condition2.AddCondition();
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condition3.FormatType = ExcelCFType.IconSet;
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IIconSet iconSet = condition3.IconSet;
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iconSet.IconSet = ExcelIconSetType.ThreeTrafficLights1;
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//Saving the workbook
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FileStream outputStream = new FileStream("Output.xlsx", FileMode.Create, FileAccess.Write);
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workbook.SaveAs(outputStream);
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outputStream.Dispose();
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}
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```
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‎FAQ/Conditional Formatting/.NET/Traffic lights icon/Traffic lights icon.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.12.35506.116 d17.12
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Traffic lights icon", "Traffic lights icon\Traffic lights icon.csproj", "{E5911C99-3E19-4A51-906E-6E97D116A4AE}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{E5911C99-3E19-4A51-906E-6E97D116A4AE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{E5911C99-3E19-4A51-906E-6E97D116A4AE}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{E5911C99-3E19-4A51-906E-6E97D116A4AE}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{E5911C99-3E19-4A51-906E-6E97D116A4AE}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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EndGlobal

‎FAQ/Conditional Formatting/.NET/Traffic lights icon/Traffic lights icon/Output/.gitkeep‎

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‎FAQ/Conditional Formatting/.NET/Traffic lights icon/Traffic lights icon/Program.cs‎

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using System;
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using System.IO;
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using Syncfusion.XlsIO;
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namespace Traffic_Light
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{
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class Program
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{
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static void Main(string[] args)
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{
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using (ExcelEngine excelEngine = new ExcelEngine())
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{
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IApplication application = excelEngine.Excel;
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application.DefaultVersion = ExcelVersion.Excel2013;
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IWorkbook workbook = application.Workbooks.Create(1);
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IWorksheet worksheet = workbook.Worksheets[0];
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//Add data and formatting to the worksheet
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worksheet.Range["A1"].Text = "Traffic Lights";
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//Add percentage values to cells A2 to A7 and format them as percentages
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worksheet.Range["A2"].Number = 0.95;
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worksheet.Range["A2"].NumberFormat = "0%";
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worksheet.Range["A3"].Number = 0.5;
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worksheet.Range["A3"].NumberFormat = "0%";
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worksheet.Range["A4"].Number = 0.1;
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worksheet.Range["A4"].NumberFormat = "0%";
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worksheet.Range["A5"].Number = 0.9;
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worksheet.Range["A5"].NumberFormat = "0%";
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worksheet.Range["A6"].Number = 0.7;
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worksheet.Range["A6"].NumberFormat = "0%";
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worksheet.Range["A7"].Number = 0.6;
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worksheet.Range["A7"].NumberFormat = "0%";
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//Adjust row height and column width of the used range
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worksheet.UsedRange.RowHeight = 20;
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worksheet.UsedRange.ColumnWidth = 25;
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//Apply the first conditional format
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IConditionalFormats condition = worksheet.UsedRange.ConditionalFormats;
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IConditionalFormat condition1 = condition.AddCondition();
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condition1.FormatType = ExcelCFType.CellValue;
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condition1.FirstFormula = "300";
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condition1.Operator = ExcelComparisonOperator.Less;
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condition1.FontColor = ExcelKnownColors.Black;
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condition1.BackColor = ExcelKnownColors.Sky_blue;
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//Apply the second conditional format
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IConditionalFormats condition2 = worksheet.UsedRange.ConditionalFormats;
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IConditionalFormat condition3 = condition2.AddCondition();
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condition3.FormatType = ExcelCFType.IconSet;
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IIconSet iconSet = condition3.IconSet;
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iconSet.IconSet = ExcelIconSetType.ThreeTrafficLights1;
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//Saving the workbook
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FileStream outputStream = new FileStream("Output.xlsx", FileMode.Create, FileAccess.Write);
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workbook.SaveAs(outputStream);
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outputStream.Dispose();
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}
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}
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}
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}
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‎FAQ/Conditional Formatting/.NET/Traffic lights icon/Traffic lights icon/Traffic lights icon.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net8.0</TargetFramework>
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<RootNamespace>Traffic_lights_icon</RootNamespace>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Syncfusion.XlsIO.Net.Core" Version="*" />
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</ItemGroup>
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<ItemGroup>
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<None Update="Output\*">
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<CopyToOutputDirectory>Always</CopyToOutputDirectory>
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</None>
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</ItemGroup>
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</Project>

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