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How to get the RGB color value for the applied cell color?
+
+ How to restore formulas stored as text in Excel documents?
+
How to save the edited changes in the same Excel document?
diff --git a/Document-Processing/Excel/Excel-Library/NET/faqs/how-to-restore-formulas-stored-as-text-in-excel-documents.md b/Document-Processing/Excel/Excel-Library/NET/faqs/how-to-restore-formulas-stored-as-text-in-excel-documents.md
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+---
+title: Restore Excel formulas stored as text | Syncfusion
+description: Code example to restore Excel formulas stored as text in Excel documents using Syncfusion .NET Excel library (XlsIO).
+platform: document-processing
+control: XlsIO
+documentation: UG
+---
+
+# How to restore formulas stored as text in Excel documents?
+
+The following code examples demonstrate how to handle Excel formulas stored as strings using cell type validation using C# (Cross-platform and Windows-specific) and VB.NET.
+
+{% tabs %}
+{% highlight c# tabtitle="C# [Cross-platform]" playgroundButtonLink="https://raw.githubusercontent.com/SyncfusionExamples/XlsIO-Examples/master/FAQ/Formula%20stored%20as%20text%20handling/.NET/FormulaStoredAsTextHandling/FormulaStoredAsTextHandling/Program.cs,180" %}
+using (ExcelEngine excelEngine = new ExcelEngine())
+{
+ IApplication application = excelEngine.Excel;
+ application.DefaultVersion = ExcelVersion.Xlsx;
+
+ //Create a new workbook with one worksheet
+ IWorkbook workbook = application.Workbooks.Create(1);
+ IWorksheet worksheet = workbook.Worksheets[0];
+
+ //Assign a formula as text to the cell
+ worksheet["A1"].Text = "=SUM(2+2)";
+
+ //Get the cell type of the cell
+ Syncfusion.XlsIO.Implementation.WorksheetImpl.TRangeValueType cellType =
+ (worksheet as WorksheetImpl).GetCellType(1, 1, false);
+
+ //Check if the cell type is string
+ if (cellType == TRangeValueType.String)
+ {
+ //Retrieve the formula text
+ string formulaText = worksheet["A1"].Text;
+
+ //Clear the cell value
+ worksheet["A1"].Value = string.Empty;
+
+ //Reassign the formula to the cell
+ worksheet["A1"].Formula = formulaText;
+ }
+
+ //Save the workbook
+ workbook.SaveAs(Path.GetFullPath(@"Output/Output.xlsx"));
+}
+{% endhighlight %}
+
+{% highlight c# tabtitle="C# [Windows-specific]" %}
+using (ExcelEngine excelEngine = new ExcelEngine())
+{
+ IApplication application = excelEngine.Excel;
+ application.DefaultVersion = ExcelVersion.Xlsx;
+
+ //Create a new workbook with one worksheet
+ IWorkbook workbook = application.Workbooks.Create(1);
+ IWorksheet worksheet = workbook.Worksheets[0];
+
+ //Assign a formula as text to the cell
+ worksheet["A1"].Text = "=SUM(2+2)";
+
+ //Get the cell type of the cell
+ Syncfusion.XlsIO.Implementation.WorksheetImpl.TRangeValueType cellType =
+ (worksheet as WorksheetImpl).GetCellType(1, 1, false);
+
+ //Check if the cell type is string
+ if (cellType == TRangeValueType.String)
+ {
+ //Retrieve the formula text
+ string formulaText = worksheet["A1"].Text;
+
+ //Clear the cell value
+ worksheet["A1"].Value = string.Empty;
+
+ //Reassign the formula to the cell
+ worksheet["A1"].Formula = formulaText;
+ }
+
+ //Save the workbook
+ workbook.SaveAs("Output.xlsx");
+}
+{% endhighlight %}
+
+{% highlight vb.net tabtitle="VB.NET [Windows-specific]" %}
+Using excelEngine As New ExcelEngine()
+ Dim application As IApplication = excelEngine.Excel
+ application.DefaultVersion = ExcelVersion.Xlsx
+
+ 'Create a new workbook with one worksheet
+ Dim workbook As IWorkbook = application.Workbooks.Create(1)
+ Dim worksheet As IWorksheet = workbook.Worksheets(0)
+
+ 'Assign a formula as text to the cell
+ worksheet("A1").Text = "=SUM(2+2)"
+
+ 'Get the cell type
+ Dim cellType As Syncfusion.XlsIO.Implementation.WorksheetImpl.TRangeValueType =
+ CType(worksheet, WorksheetImpl).GetCellType(1, 1, False)
+
+ 'Check if the cell type is string
+ If cellType = TRangeValueType.String Then
+ 'Retrieve the formula text
+ Dim formulaText As String = worksheet("A1").Text
+
+ 'Clear the cell value
+ worksheet("A1").Value = String.Empty
+
+ 'Reassign the formula to the cell
+ worksheet("A1").Formula = formulaText
+ End If
+
+ 'Save the workbook
+ workbook.SaveAs(IO.Path.GetFullPath("Output/Output.xlsx"))
+End Using
+{% endhighlight %}
+{% endtabs %}
+
+A complete working example in C# is present on this GitHub page.
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