I have a Button with server-side OnClick handler, here are the codes
protected void btnDownload_Click(object sender, ImageClickEventArgs e) ***I PUT BREAKPOINT HERE***
{
try
{
string fileName = "ProductAvail_" + DateTime.Now.ToString("yyyyMMdd") + "_" + DateTime.Now.ToString("hmmsstt");
string directory = Request.PhysicalApplicationPath + "Download/";
string serverPath = HttpContext.Current.Request.Url.AbsoluteUri.Substring(0, HttpContext.Current.Request.Url.AbsoluteUri.LastIndexOf("/"));
if (!System.IO.Directory.Exists(directory))
System.IO.Directory.CreateDirectory(directory);
DataTable table = (DataTable)ViewState["dtTemp2"];
ExcelConvertor ex = new ExcelConvertor();
ex.Convert(table, directory + fileName + ".xls");
string url = "../download/download.aspx?fp=" + directory + fileName + ".xls";
Response.Redirect(url);
}
catch (Exception exx)
{
lblMsg.Text = exx.Message;
}
}
Code in download.aspx(page load event)
string path = Request.QueryString["fp"].ToString();
FileInfo file = new FileInfo(path);
if (file.Exists)
{
System.IO.Stream iStream = null;
// Buffer to read 10K bytes in chunk:
byte[] buffer = new Byte[10000];
// Length of the file:
int length;
// Total bytes to read:
long dataToRead;
// Identify the file to download including its path.
string filepath = file.FullName; //"\\\\portnumbria\\Exceptions\\09012009_Exception_AccountOfficerUnitCasa.txt";
// Identify the file name.
string filename = System.IO.Path.GetFileName(filepath);
try
{
// Open the file.
iStream = new System.IO.FileStream(filepath, System.IO.FileMode.Open,
System.IO.FileAccess.Read, System.IO.FileShare.Read);
// Total bytes to read:
dataToRead = iStream.Length;
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment; filename=" + filename);
// Read the bytes.
while (dataToRead > 0)
{
// Verify that the client is connected.
if (Response.IsClientConnected)
{
// Read the data in buffer.
length = iStream.Read(buffer, 0, 10000);
// Write the data to the current output stream.
Response.OutputStream.Write(buffer, 0, length);
// Flush the data to the HTML output.
Response.Flush();
buffer = new Byte[10000];
dataToRead = dataToRead - length;
}
else
{
//prevent infinite loop if user disconnects
dataToRead = -1;
}
}
}
catch (Exception ex)
{
// Trap the error, if any.
Response.Write("Error : " + ex.Message);
}
finally
{
if (iStream != null)
{
//Close the file.
iStream.Close();
}
Response.Close();
}
