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Modify file streams of C# [Cross-platform] in XlsIO UG - Working with Template Markers #1659

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Oct 30, 2025
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Modify file streams of C# [Cross-platform] in XlsIO UG - Working with Template Markers #1659

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62 changes: 16 additions & 46 deletions Document-Processing/Excel/Excel-Library/NET/Working-with-Template-Markers.md
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Original file line number Diff line number Diff line change
Expand Up @@ -96,8 +96,7 @@ 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, ExcelOpenType.Automatic);
IWorkbook workbook = application.Workbooks.Open(Path.GetFullPath(@"Data/InputTemplate.xlsx"), ExcelOpenType.Automatic);
IWorksheet worksheet = workbook.Worksheets[0];

//Create Template Marker Processor
Expand Down Expand Up @@ -125,13 +124,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

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

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

Expand Down Expand Up @@ -196,8 +190,7 @@ You can also add or insert template markers using XlsIO APIs as follows.
using (ExcelEngine excelEngine = new ExcelEngine())
{
IApplication application = excelEngine.Excel;
FileStream fileStream = new FileStream("Sample.xlsx", FileMode.Open, FileAccess.Read);
IWorkbook workbook = application.Workbooks.Open(fileStream);
IWorkbook workbook = application.Workbooks.Open("Sample.xlsx");
IWorksheet sheet = workbook.Worksheets[0];

//Insert Simple marker
Expand All @@ -220,11 +213,9 @@ using (ExcelEngine excelEngine = new ExcelEngine())
//Process the markers in the template
marker.ApplyMarkers();

//Saving the workbook as stream
//Saving the workbook
workbook.Version = ExcelVersion.Excel2013;
FileStream stream = new FileStream("TemplateMarker.xlsx", FileMode.Create, FileAccess.ReadWrite);
workbook.SaveAs(stream);
stream.Dispose();
workbook.SaveAs("TemplateMarker.xlsx"));
}
{% endhighlight %}

Expand Down Expand Up @@ -315,10 +306,9 @@ The following code snippet illustrates how to detect data type and apply number
using (ExcelEngine excelEngine = new ExcelEngine())
{
IApplication application = excelEngine.Excel;
FileStream fileStream = new FileStream("TemplateMarker.xlsx", FileMode.Open, FileAccess.Read);
IWorkbook workbook = application.Workbooks.Open(fileStream);

//Create Template Marker Processor
IWorkbook workbook = application.Workbooks.Open("TemplateMarker.xlsx");

//Create Template Marker Processor
ITemplateMarkersProcessor marker = workbook.CreateTemplateMarkersProcessor();

DataTable reports = new DataTable();
Expand All @@ -338,12 +328,10 @@ using (ExcelEngine excelEngine = new ExcelEngine())
//Process the markers and detect the number format along with the data type in the template
marker.ApplyMarkers();

//Saving the workbook as stream
//Saving the workbook
workbook.Version = ExcelVersion.Excel2013;
workbook.SaveAs(Path.GetFullPath("TemplateMarkerWithFormat.xlsx"));

FileStream stream = new FileStream("TemplateMarkerWithFormat.xlsx", FileMode.Create, FileAccess.ReadWrite);
workbook.SaveAs(stream);
stream.Dispose();
}
{% endhighlight %}

Expand Down Expand Up @@ -540,8 +528,7 @@ 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, ExcelOpenType.Automatic);
IWorkbook workbook = application.Workbooks.Open(Path.GetFullPath(@"Data/InputTemplate.xlsx"), ExcelOpenType.Automatic);
IWorksheet worksheet = workbook.Worksheets[0];

//Create Template Marker Processor
Expand All @@ -555,13 +542,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

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

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

Expand Down Expand Up @@ -848,8 +830,7 @@ 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, ExcelOpenType.Automatic);
IWorkbook workbook = application.Workbooks.Open(Path.GetFullPath(@"Data/InputTemplate.xlsx"), ExcelOpenType.Automatic);
IWorksheet worksheet = workbook.Worksheets[0];

//Create Template Marker Processor
Expand Down Expand Up @@ -955,13 +936,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

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

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

Expand Down Expand Up @@ -1248,8 +1224,7 @@ 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, ExcelOpenType.Automatic);
IWorkbook workbook = application.Workbooks.Open(Path.GetFullPath(@"Data/InputTemplate.xlsx"), ExcelOpenType.Automatic);
IWorksheet worksheet = workbook.Worksheets[0];

//Create Template Marker Processor
Expand All @@ -1263,13 +1238,8 @@ using (ExcelEngine excelEngine = new ExcelEngine())

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

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

Expand Down