C# Method to save Sql data into Excel file

This article describes the method of saving Sql data into an Excel file in C#, which is very practical. Share it for your reference.

The specific function codes are as follows:

public string ExportExcel( DataSet ds,string saveFileName)
{
  try
  {
 if (ds == null) 
   return "The database is empty";
 
 bool fileSaved = false;
  xlApp = new ();
 if (xlApp == null)
 {
   return "Unable to create Excel object, maybe your machine does not have Excel installed";
 }
  workbooks = ;
  workbook = ();
  worksheet = ()[1];//Get sheet1 //Write fields for (int i = 0; i &lt; [0].; i++)
 {
   [1, i + 1] = [0].Columns[i].ColumnName;
 }
 //Write the value for (int r = 0; r &lt; [0].; r++)
 {
   for (int i = 0; i &lt; [0].; i++)
   {
 [r + 2, i + 1] = [0].Rows[r][i];
   }
   ();
 }
 ();//Column width adaptation. if (saveFileName != "")
 {
   try
   {
  = true;
 (saveFileName);
 fileSaved = true;
   }
   catch (Exception ex)
   {
 fileSaved = false;
 ("An error occurred while exporting the file, the file may be being opened!\n" + );
   }
 }
 else
 {
   fileSaved = false;
 }
 ();
 ();//Forcibly destroyed if (fileSaved &amp;&amp; (saveFileName)) (saveFileName); //Open EXCEL return "Save to Excel successfully";
  }
  catch (Exception ex)
  {
 return ();
  }
}

I hope that the examples described in this article will be helpful to everyone's C# programming.