Dot Net Code Snippets

To upload large files in asp.net you have to increase the MaxrequestLength and Executiontimeout of the httpruntime settings of your web.config file.By Default it will upload 4MB

suppose if i want to upload upto 8 MB you have to include this tag in you web.config file , don't change anything in your machine.config files.

httpruntime  maxRequestLength="1048576" executionTimeout="450"

 

To validate the fileupload control use Custom Validator and call this function on ClientValidateFunction property of Custom validator.

You can pass the file extension , Watever you want to allow..

function ValidateSFrontImageUpload(Source, args)
{
var fuData = document.getElementById('<%= FrontSImage_FileUpload.ClientID %>');
var FileUploadPath = fuData.value;

if(FileUploadPath =='')
{
// There is no file selected
args.IsValid = false;
}
else
{
var Extension = FileUploadPath.substring(FileUploadPath.lastIndexOf('.') + 1).toLowerCase();

if (Extension == "jpg" || Extension == "jpeg" || Extension == "png" || Extension == "gif")
{
args.IsValid = true; // Valid file type
}
else
{
args.IsValid = false; // Not valid file type
}
}
}