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Modify file streams of C# [Cross-platform] in XlsIO UG - Working with Formulas #1653

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Oct 28, 2025
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Modify file streams of C# [Cross-platform] in XlsIO UG - Working with Formulas #1653

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89 changes: 17 additions & 72 deletions Document-Processing/Excel/Excel-Library/NET/Working-with-Formulas.md
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Original file line number Diff line number Diff line change
Expand Up @@ -90,12 +90,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
{% endhighlight %}

Expand Down Expand Up @@ -163,12 +159,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
{% endhighlight %}

Expand Down Expand Up @@ -261,12 +253,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
{% endhighlight %}

Expand Down Expand Up @@ -344,12 +332,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
//Output

Expand Down Expand Up @@ -469,12 +453,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
{% endhighlight %}

Expand Down Expand Up @@ -537,12 +517,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
{% endhighlight %}

Expand Down Expand Up @@ -615,12 +591,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/IncrementalFormula.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/IncrementalFormula.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
{% endhighlight %}

Expand Down Expand Up @@ -686,12 +658,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/ExternalFormula.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/ExternalFormula.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
{% endhighlight %}

Expand Down Expand Up @@ -768,12 +736,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/CalculatedColumn.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/CalculatedColumn.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
{% endhighlight %}

Expand Down Expand Up @@ -2098,10 +2062,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())
//Use the function. The expected result is 30
sheet.Range["A3"].Formula = "AddInFunction(10,20)";

//Saving the workbook as stream
FileStream stream = new FileStream("AddIn.xlsx", FileMode.Create, FileAccess.ReadWrite);
workbook.SaveAs(stream);
stream.Dispose();
//Saving the workbook
workbook.SaveAs(Path.GetFullPath("Output/AddIn.xlsx"));
}
{% endhighlight %}

Expand Down Expand Up @@ -2251,12 +2213,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/Formula.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/Formula.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
{% endhighlight %}

Expand Down Expand Up @@ -2362,22 +2320,17 @@ Following code illustrates on how to ignore or set error indicators.
using (ExcelEngine excelEngine = new ExcelEngine())
{
IApplication application = excelEngine.Excel;
application.DefaultVersion = ExcelVersion.Xlsx;
FileStream inputStream = new FileStream(Path.GetFullPath(@"Data/InputTemplate.xlsx"), FileMode.Open, FileAccess.Read);
IWorkbook workbook = application.Workbooks.Open(inputStream);
application.DefaultVersion = ExcelVersion.Xlsx;
IWorkbook workbook = application.Workbooks.Open(Path.GetFullPath(@"Data/InputTemplate.xlsx"));
IWorksheet sheet = workbook.Worksheets[0];

//Sets warning if number is entered as text.
sheet.Range["A2:D2"].IgnoreErrorOptions = ExcelIgnoreError.NumberAsText;

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/FormulaAuditing.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/FormulaAuditing.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
{% endhighlight %}

Expand Down Expand Up @@ -2455,12 +2408,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/CalculationMode.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/CalculationMode.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
{% endhighlight %}

Expand Down Expand Up @@ -2551,12 +2500,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

#region Save
//Saving the workbook
FileStream outputStream = new FileStream(Path.GetFullPath("Output/Iteration.xlsx"), FileMode.Create, FileAccess.Write);
workbook.SaveAs(outputStream);
workbook.SaveAs(Path.GetFullPath("Output/Iteration.xlsx"));
#endregion

//Dispose streams
outputStream.Dispose();
}
{% endhighlight %}

Expand Down