Here Mudassar Ahmed Khan has explained with an example, how to read and import Excel file directly from Stream without saving in Folder (Directory) on Server’s Disk in ASP.Net using C# and VB.Net.

When the Excel file is uploaded, the Excel File data is available in the InputStream property of the FileUpload control.

Using ClosedXml, the Excel file data can be easily read from the InputStream property.

Here Mudassar Ahmed Khan has explained with an example, how to read (import) Excel file without using OLEDB or installing Microsoft Office Excel or Interop Library in C# and VB.Net.

The Excel file will be read using ClosedXml and OpenXml DLLs which does not require OLEDB and does not require Microsoft Office Excel or Interop Library software to be installed.

Here Mudassar Ahmed Khan has explained with an example, how to read and import Excel file using FileUpload control without saving in Folder (Directory) on Server’s Disk in ASP.Net using C# and VB.Net.

Here Mudassar Ahmed Khan has explained with an example, how to export DataGridView data to Excel file with formatting i.e. Colors and Styles in Windows Forms (WinForms) Applications using C# and VB.Net.

DataGridView cannot be exported directly to Excel file and hence need to generate a DataTable and export the DataTable to Excel file.

The DataTable will be exported to a formatted Excel file using ClosedXml library which is a wrapper of OpenXml.