Getting Error While Trying To Export To Excel When Cacheability Is Set To None?
Feb 3, 2011
When I was setting cacheability of the master page to none for ASP.NET 3.5, C# the subsequent pages inheriting master page showed error when trying to Export to Excel a gridview on them.
Error:
Internet explorer cannot download pagename.aspx from IPAddress.
Internet explorer was not able to open this Internet Site. The requested site is either unavailable or can not be found.
above pagename.aspx inherit MasterPage, where cacheability is set to none for Response.
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protected void export_Click(object sender, EventArgs e)
{
string sql = null;
string data = null;
string path = save_as.Text;
int i = 0;
int j = 0;
Excel.Application xlApp;
Excel.Workbook xlWorkBook;
Excel.Worksheet xlWorkSheet;
object misValue = System.Reflection.Missing.Value;
xlApp = new Excel.ApplicationClass();
xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
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SqlDataAdapter dscmd = new SqlDataAdapter(sql, cnn);
DataSet ds = new DataSet();
dscmd.Fill(ds);
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{
for (j = 0; j <= ds.Tables[0].Columns.Count - 1; j++)
{
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xlWorkBook.SaveAs(path+".xls", Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
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xlApp.Quit();
releaseObject(xlWorkSheet);
releaseObject(xlWorkBook);
releaseObject(xlApp);
//MessageBox.Show("Excel file created , you can find the file c:\csharp.net-informations.xls");
}
private void releaseObject(object obj)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
obj = null;
}
catch (Exception ex)
{
obj = null;
//MessageBox.Show("Exception Occured while releasing object " + ex.ToString());
}
finally
{
GC.Collect();
}
}
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