Uplaod files to the web server from User's computer

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Uplaod files to the web server from User's computer

Category: ASP.Net
view more software Tips and Tricks

Updated: 07/16/2012 11:07 AM
Author: Shiju Mathews

Status: Resolved.

Files from user computer can be uploaded to the server using the HTML control input with type="File".

When performing this task make sure that you checked the file type and file size that the user is trying tp upload to prevent any danages on serverside.

All validation can be performed at the serverside.

protected void Button_Click(object sender, EventArgs e)
{
int FileSize = 0;
string MimeType = string.Empty;
string pdfMimeValue = "application/pdf";
int OneMegaBiteSize = 1000000;
string FileExtension = string.Empty;
if (IsValid)
{
FileSize = inp_FileUpLoad.PostedFile.ContentLength;
MimeType = inp_FileUpLoad.PostedFile.ContentType;
if (FileSize == 0)
{ //No File
pnlFileUploadMessage.Visible = true;
divFileUploadMessage.InnerHtml = "File size is zero or no content";
}
else if (FileSize < OneMegaBiteSize)
{
FileExtension = Path.GetExtension(inp_FileUpLoad.PostedFile.FileName);
if (string.Compare(pdfMimeValue, MimeType) == 0)
{
pnlFileUploadMessage.Visible = false;
string FileName = string.Concat("~/images/FileUpload/", "OfficeNumber-", txtCaseNumber.Text.Trim(), FileExtension);
FileName = Server.MapPath(FileName);
inp_FileUpLoad.PostedFile.SaveAs(FileName);
Thread.Sleep(10); }
else
{
pnlFileUploadMessage.Visible = true;
divFileUploadMessage.InnerHtml = "File content type is not identified as pdf. pdf files are only allowed";
}
}
else
{
// Too Large to process
pnlFileUploadMessage.Visible = true;
divFileUploadMessage.InnerHtml = "File size is exceeding the maximum allowable limit. Maximum file size is limited as 1 megabyte";
}
} }

ASP.NET 2.0 introduced the server control FileUpload. For more information please read.

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