ASP.NET Implement Push File to Browser Method
- 2021-06-29 10:48:22
- OfStack
This article shows an example of how ASP.NET can push files to a browser.Share it for your reference.Specific analysis is as follows:
The main implementation here is from the server to the browser, pushing files, providing users with the ability to download/browse.
Tip: Invalid in AJAX UpdatePanel.If the code is called from a button click event, the button needs to be outside of AJAX UpdatePanel.
The code is as follows:
/// <summary>
/// Downloads (pushes) file to the client browser.
/// **** NOTE **** Cannot be done from inside an AJAX UpdatePanel control.
/// </summary>
/// <param name="fullFilePath">The full file path of the file</param>
protected void DownloadFile(string fullFilePath)
{
// Gets the File Name
string fileName = fullFilePath.Substring(fullFilePath.LastIndexOf('\\') + 1);
byte[] buffer;
using (FileStream fileStream = new FileStream(fullFilePath, FileMode.Open))
{
int fileSize = (int)fileStream.Length;
buffer = new byte[fileSize];
// Read file into buffer
fileStream.Read(buffer, 0, (int)fileSize);
}
Response.Clear();
Response.Buffer = true;
Response.BufferOutput = true;
Response.ContentType = "application/x-download";
Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName);
Response.CacheControl = "public";
// writes buffer to OutputStream
Response.OutputStream.Write(buffer, 0, buffer.Length);
Response.End();
}
I hope that the description in this paper will be helpful to everyone's asp.net program design.