diff --git a/File-Formats-toc.html b/File-Formats-toc.html index 55b20b781..f5548652e 100644 --- a/File-Formats-toc.html +++ b/File-Formats-toc.html @@ -1687,6 +1687,7 @@
  • How to find and replace text in hyperlinks
  • How to fix the ArgumentOutOfRangeException when accessing a large number of rows and columns?
  • How to set Logarithmic axis for chart in Excel document?
    • +
  • How to resolve performance issue when deleting a large number of rows?
    • diff --git a/File-Formats/XlsIO/FAQ.md b/File-Formats/XlsIO/FAQ.md index 87104604d..fb3c5eb10 100644 --- a/File-Formats/XlsIO/FAQ.md +++ b/File-Formats/XlsIO/FAQ.md @@ -79,6 +79,7 @@ The frequently asked questions in Essential XlsIO are listed below. * [Why cone chart shows itself as column or bar chart?](faqs/why-cone-chart-shows-itself-as-colum-or-bar-chart) * [How to vary colors by point for line and column chart?](faqs/how-to-vary-colors-by-point-for-line-and-column-chart) * [How to upload a file to Azure blob and download as stream?](faqs/how-to-upload-a-file-to-azure-blob-and-download-as-stream) -* [How to find and replace text in hyperlinks](faqs/how-to-find-and-replace-text-in-hyperlinks) +* [How to find and replace text in hyperlinks?](faqs/how-to-find-and-replace-text-in-hyperlinks) * [How to fix the ArgumentOutOfRangeException when accessing a large number of rows and columns?](faqs/how-to-fix-the-argument-out-of-range-exception-when-accessing-a-large-number-of-rows-and-columns) -* [How to set Logarithmic axis for chart in Excel document](faqs/how-to-set-logarithmic-axis-for-chart-in-excel-document) \ No newline at end of file +* [How to set Logarithmic axis for chart in Excel document?](faqs/how-to-set-logarithmic-axis-for-chart-in-excel-document) +* [How to resolve performance issue when deleting a large number of rows?](faqs/how-to-resolve-performance-issue-when-deleting-a-large-number-of-rows) \ No newline at end of file diff --git a/File-Formats/XlsIO/Working-with-Data.md b/File-Formats/XlsIO/Working-with-Data.md index 70f7e3422..c317ffcfd 100644 --- a/File-Formats/XlsIO/Working-with-Data.md +++ b/File-Formats/XlsIO/Working-with-Data.md @@ -1,7 +1,7 @@ --- title: Working with Data | Syncfusion description: Learn how to import data to Excel file from ADO.NET objects, Collections, Array; and how to export data from Excel to ADO.NET objects or collections. -platform: file-Formats +platform: file-formats control: XlsIO documentation: UG --- @@ -81,6 +81,8 @@ End Using A complete working example to import data from DataTable to Excel worksheet in C# is present on [this GitHub page](https://github.com/SyncfusionExamples/XlsIO-Examples/tree/master/Import%20and%20Export%20Data/DataTable%20to%20Worksheet). +N> XlsIO imports the data from data table into Excel worksheet based on the data table column type. So, it is suggested to create the data tables with required column types such as number, text or date time before importing the data table to Excel worksheet. + ### Import Data from DataColumn The following code snippet illustrates how to import DataColumn into a worksheet using [ImportDataColumn](https://help.syncfusion.com/cr/file-formats/Syncfusion.XlsIO.IWorksheet.html#Syncfusion_XlsIO_IWorksheet_ImportDataColumn_System_Data_DataColumn_System_Boolean_System_Int32_System_Int32_) method. @@ -2244,7 +2246,7 @@ using (ExcelEngine excelEngine = new ExcelEngine()) IWorksheet worksheet = workbook.Worksheets[0]; //Read data from the worksheet and Export to the DataTable - DataTable customersTable = worksheet.ExportDataTable(worksheet.UsedRange, ExcelExportDataTableOptions.ColumnNames); + DataTable customersTable = worksheet.ExportDataTable(worksheet.UsedRange, ExcelExportDataTableOptions.ColumnNames | ExcelExportDataTableOptions.ComputedFormulaValues); //Saving the workbook as stream FileStream stream = new FileStream("ExportToDT.xlsx", FileMode.Create, FileAccess.ReadWrite); @@ -2264,7 +2266,7 @@ using (ExcelEngine excelEngine = new ExcelEngine()) IWorksheet worksheet = workbook.Worksheets[0]; //Read data from the worksheet and Export to the DataTable - DataTable customersTable = worksheet.ExportDataTable(worksheet.UsedRange, ExcelExportDataTableOptions.ColumnNames); + DataTable customersTable = worksheet.ExportDataTable(worksheet.UsedRange, ExcelExportDataTableOptions.ColumnNames | ExcelExportDataTableOptions.ComputedFormulaValues); //Binding exported DataTable to data grid, likewise it can binded to any //user interface control which supports binding @@ -2283,7 +2285,7 @@ Using excelEngine As ExcelEngine = New ExcelEngine() Dim sheet As IWorksheet = workbook.Worksheets(0) 'Read data from the worksheet and Export to the DataTable - Dim customersTable As DataTable = sheet.ExportDataTable(sheet.UsedRange, ExcelExportDataTableOptions.ColumnNames) + Dim customersTable As DataTable = sheet.ExportDataTable(sheet.UsedRange, ExcelExportDataTableOptions.ColumnNames Or ExcelExportDataTableOptions.ComputedFormulaValues) 'Binding exported DataTable to data grid, likewise it can binded to any 'user interface control which supports binding diff --git a/File-Formats/XlsIO/Working-with-Template-Markers.md b/File-Formats/XlsIO/Working-with-Template-Markers.md index f1ed67b34..380f74708 100644 --- a/File-Formats/XlsIO/Working-with-Template-Markers.md +++ b/File-Formats/XlsIO/Working-with-Template-Markers.md @@ -73,6 +73,8 @@ Syntax: %<MarkerVariable>.<Property>collapsegroup Syntax: %<MarkerVariable>.<Property>expandgroup +N> XlsIO supports only one marker for each cell while importing data from data sources to Excel templates. This is the behavior of template marker in XlsIO. + ## Bind from Array An array of data can be binded to the marker in the template document. diff --git a/File-Formats/XlsIO/faqs/how-to-resolve-performance-issue-when-deleting-a-large-number-of-rows.md b/File-Formats/XlsIO/faqs/how-to-resolve-performance-issue-when-deleting-a-large-number-of-rows.md new file mode 100644 index 000000000..f4bfbc461 --- /dev/null +++ b/File-Formats/XlsIO/faqs/how-to-resolve-performance-issue-when-deleting-a-large-number-of-rows.md @@ -0,0 +1,120 @@ +--- +title: Resolve performance issue while deleting |Syncfusion. +description: This page explains how to resolve performance issue when deleting a large number of rows using Syncfusion .NET Excel library (XlsIO). +platform: file-formats +control: XlsIO +documentation: UG +--- + +# How to resolve performance issue when deleting a large number of rows? + +To address the performance issue, rather than deleting the large number of blank rows using the DeleteRow method, copy the row containing values to a new worksheet and then delete the previous worksheet. + +The following code illustrates how to resolve performance issue when deleting a large number of rows. + +{% tabs %} +{% highlight c# tabtitle="C# [Cross-platform]" %} +using(ExcelEngine excelEngine = new ExcelEngine()) +{ + IApplication application = excelEngine.Excel; + application.DefaultVersion = ExcelVersion.Xlsx; + + //Loads an existing file + FileStream fileStream = new FileStream("InputTemplate.xlsx", FileMode.Open, FileAccess.Read); + IWorkbook workbook = application.Workbooks.Open(fileStream); + IWorksheet worksheet = workbook.Worksheets[0]; + IWorksheet newWorksheet = workbook.Worksheets[1]; + + IRange usedRange = worksheet.UsedRange; + int rowIndexSheet1 = 1; + int rowIndexSheet2 = 1; + foreach (IRange row in usedRange.Rows) + { + RowStorage rowStorage = WorksheetHelper.GetOrCreateRow(worksheet as IInternalWorksheet, rowIndexSheet1 - 1, false); + if (rowStorage != null) + { + // Copy the Entire row to the next sheet + IRange destinationRow = newWorksheet.Range[rowIndexSheet2, 1]; + row.EntireRow.CopyTo(destinationRow); + rowIndexSheet2++; + } + rowIndexSheet1++; + } + + //Remove the worksheet + workbook.Worksheets[0].Remove(); + + //Saving the workbook as stream + FileStream stream = new FileStream("Output.xlsx", FileMode.Create, FileAccess.ReadWrite); + workbook.SaveAs(stream); + stream.Dispose(); +} +{% endhighlight %} + +{% highlight c# tabtitle="C# [Windows-specific]" %} +using(ExcelEngine excelEngine = new ExcelEngine()) +{ + IApplication application = excelEngine.Excel; + application.DefaultVersion = ExcelVersion.Xlsx; + + //Loads an existing file + IWorkbook workbook = application.Workbooks.Open("InputTemplate.xlsx"); + IWorksheet worksheet = workbook.Worksheets[0]; + IWorksheet newWorksheet = workbook.Worksheets[1]; + + IRange usedRange = worksheet.UsedRange; + int rowIndexSheet1 = 1; + int rowIndexSheet2 = 1; + foreach (IRange row in usedRange.Rows) + { + RowStorage rowStorage = WorksheetHelper.GetOrCreateRow(worksheet as IInternalWorksheet, rowIndexSheet1 - 1, false); + if (rowStorage != null) + { + // Copy the Entire row to the next sheet + IRange destinationRow = newWorksheet.Range[rowIndexSheet2, 1]; + row.EntireRow.CopyTo(destinationRow); + rowIndexSheet2++; + } + rowIndexSheet1++; + } + + //Remove the worksheet + workbook.Worksheets[0].Remove(); + + //Saving the workbook as stream + 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 + + ' Loads an existing file + Dim workbook As IWorkbook = application.Workbooks.Open("InputTemplate.xlsx") + Dim worksheet As IWorksheet = workbook.Worksheets(0) + Dim newWorksheet As IWorksheet = workbook.Worksheets(1) + + Dim usedRange As IRange = worksheet.UsedRange + Dim rowIndexSheet1 As Integer = 1 + Dim rowIndexSheet2 As Integer = 1 + For Each row As IRange In usedRange.Rows + Dim rowStorage As RowStorage = WorksheetHelper.GetOrCreateRow(TryCast(worksheet, IInternalWorksheet), rowIndexSheet1 - 1, False) + If rowStorage IsNot Nothing Then + ' Copy the Entire row to the next sheet + Dim destinationRow As IRange = newWorksheet.Range(rowIndexSheet2, 1) + row.EntireRow.CopyTo(destinationRow) + rowIndexSheet2 += 1 + End If + rowIndexSheet1 += 1 + Next + + ' Remove the worksheet + workbook.Worksheets(0).Remove() + + ' Saving the workbook + workbook.SaveAs("Output.xlsx") +End Using +{% endhighlight %} +{% endtabs %} \ No newline at end of file