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 = strFileName; // 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; //if(strFileName.ToLower().Contains(".xls")) //{ // Response.ContentType = "application/vnd.ms-excel"; //} //else //{ // Response.ContentType = "application/octet-stream"; //} Response.AddHeader("Content-Disposition", "inline; filename=" + filename); //Response.AddHeader("Content-Length", objFile.Length.ToString()); Response.ContentType = "application/vnd.ms-excel"; // 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; } } Response.End(); } catch (Exception ex) { // Trap the error, if any. Response.Write("Error : " + ex.Message); } finally { if (iStream != null) { //Close the file. iStream.Close(); } Response.Close(); }
// Length of the file: int length; . . . // Read the data in buffer. length = iStream.Read(buffer, 0, 10000);
// Length of the file: int length = 0; . . . // Read the data in buffer. length = iStream.Read(buffer, length, 10000);
var
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