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shonezi asked:

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Hello
 
I need an opinion again, I have paged datagridview and I need to export data from either desired page or filtered data, that means more pages to excel or csv or whatever, but fast, cause I have many records. I have done with excel in previous of my posts here and it works but it is very slow, how to speed things up
 
this code works but very very very slow, i fa I need to export say 1000 rows ahhhhh man I can go to dinner , come back and it still isn't finished
 

Microsoft.Office.Interop.Excel._Application app = new Microsoft.Office.Interop.Excel.Application();
 
Microsoft.Office.Interop.Excel._Workbook workbook = app.Workbooks.Add(Type.Missing);
 
Microsoft.Office.Interop.Excel._Worksheet worksheet = null;
 
 
app.Visible = true;
 
worksheet = workbook.Sheets["Sheet1"];
worksheet = workbook.ActiveSheet;
 
for (int i = 1; i < dg1.Columns.Count + 1; i++)
{
   worksheet.Cells[1, i] = dg1.Columns[i - 1].HeaderText;
}
 
for (int i = 0; i < dg1.Rows.Count - 1; i++)
{
   for (int j = 0; j < dg1.Columns.Count; j++)
   {
      worksheet.Cells[i + 2, j + 1] = dg1.Rows[i].Cells[j].Value.ToString();
   }
}
 
[edit]code block added[/edit]
Tags: C#4.0

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