RadAsyncUpload File size limit

[Farjana]

Hi,
I have a RadAsyncUpload control, i want to upload the file to target folder only on click of upload button. SO i have st the ManualUpload attribute to false. Actually On clicking upload button, i have a function to find the (total size of target folder + uploaded file size). if it exceeds than 50MB, i need to cancel the upload event. I can find the size, but i dont know how to cancel the upload event in c# code.Help me with this



Regards,
Farjana

[A2H]

Hi,

You can use the OnFileUploaded event and if the e.File.ContentLength is greater than 50 MB to set the "IsValid" property to false.

Check the Validation online demo where a similar functionality is implemented.

Sample Code

public void RadAsyncUpload1_FileUploaded(object sender, FileUploadedEventArgs e)
    {
        const int MaxTotalBytes = 52428800; // 50 MB
        long totalBytes;

        var liItem = new HtmlGenericControl("li");
        liItem.InnerText = e.File.FileName;

        if (totalBytes < MaxTotalBytes)
        {
            // Total bytes limit has not been reached, accept the file
            e.IsValid = true;
            totalBytes += e.File.ContentLength;
        }
        else
        {
            // Limit reached, discard the file
            e.IsValid = false;
        }

        if (e.IsValid)
        {

            ValidFiles.Visible = true;
            ValidFilesList.Controls.AddAt(0, liItem);

        }
        else
        {

            InvalidFiles.Visible = true;
            InValidFilesList.Controls.AddAt(0, liItem);
        }
    }

[Farjana]

Hello,

Thanks for suggesting the solution. But the solution u gave validates the entire size in client side while uploading the files. What i actually need is, I have some files to be attached at different times for the same order. The overall size of uploads should not be more than 50MB, so it should first calculate the size of folder in directory in the server and while uploading a new file to the same order, it should check if the sum of files already uploaded exceeds more than 50MB. If so, it should not upload the file. Suggest any event to cancel the upload after knowing that the sum of uploads exceeds 50MB.
Thanks.

[Shinu]

Hi Farjana,

Please have a look into the following code snippet to cancel the upload when maximum file size reaches.

ASPX:

<telerik:RadAsyncUpload ID="RadAsyncUpload1" runat="server" TargetFolder="Uploads"
    OnFileUploaded="RadAsyncUpload1_FileUploaded" OnClientFileUploading="OnClientFileUploading">
</telerik:RadAsyncUpload>
<telerik:RadButton ID="RadButton1" runat="server" Text="Save File">
</telerik:RadButton>
<asp:HiddenField ID="HiddenField1" runat="server" Value="0" />

C#:

protected void RadAsyncUpload1_FileUploaded(object sender, Telerik.Web.UI.FileUploadedEventArgs e)
{
    string path = Server.MapPath(RadAsyncUpload1.TargetFolder);
    DirectoryInfo dir = new DirectoryInfo(path);
    long size= dir.EnumerateFiles("*", SearchOption.AllDirectories).Sum(fi => fi.Length);
    if (size > 52428800)
    {
        e.IsValid = false;
        HiddenField1.Value = "1";
    }
    else
    {
        e.File.SaveAs(Path.Combine(Server.MapPath(RadAsyncUpload1.TargetFolder), e.File.FileName));
    }
}

JavaScript:

<script type="text/javascript">
    function OnClientFileUploading(sender, args) {
        var hidden = document.getElementById("HiddenField1").value;
        if (hidden == "1") {
            args.set_cancel(true);
            alert("Maximum File Size reaches");
        }
    }
</script>

Thanks,
Shinu.

[S]

1. Is uploading 900 GB (Yes GB) possible with this control?

2. In case of such a large file, what would happen to the server resources - does it directly write to the IO stream or keeps entire file in the memory? 

Use Case: Client has 3D files and Video Files.