UploadedFiles returns 0 files

[TelDev]

Hi,

I am using asyncupload for storing files into database.

I have 2 grids and a upload control and a save to database button. The selection of a row from 1st grid selects rows from 2nd grid. After this, a file is uploaded using asyncupload. Now by clicking the submit button I want to save the grid selections and the file to database.
I have attached a PostbackTriggers property to asyncupload  control because when i upload a file and change the selection in first grid the file is gone because of postback. If i remove PostbackTriggers property UploadedFiles count is not zero.

The UploadedFiles of asyncupload is always returning 0 files when i use PostbackTriggers.
I have attached an image to describe the controls.

[Shinu]

Hi TelDev,

Please have a look into the following code snippet to get the count of UploadedFiles of RadAsyncUpload.

ASPX:

<telerik:RadAsyncUpload ID="RadAsyncUpload1" runat="server" PostbackTriggers="RadButton1"
    OnFileUploaded="RadAsyncUpload1_FileUploaded">
</telerik:RadAsyncUpload>
<telerik:RadButton ID="RadButton1" runat="server" Text="Save UploadedFile">
</telerik:RadButton>
<telerik:RadButton ID="RadButton2" runat="server" Text="Page PostBack">
</telerik:RadButton>

C#:

protected void RadAsyncUpload1_FileUploaded(object sender, Telerik.Web.UI.FileUploadedEventArgs e)
{
    // when RadButton1 Click is happening this event will execute
    int count = RadAsyncUpload1.UploadedFiles.Count;
}

Thanks,
Shinu.

[TelDev]

Thanks Shinu for the reply,

I need UploadedFiles in some button event, but not in  RadAsyncUpload1_FileUploaded.
As you see in my attached image, I need the UploadedFiles count and the file in "Apply" button click.

Thanks
TelDev

[Shinu]

Hi TelDev,

Please have a look into the following code snippet to get the count and file name of the uploaded file in RadButton OnClick event.

ASPX:

<telerik:RadAsyncUpload ID="RadAsyncUpload1" runat="server" PostbackTriggers="RadButton1">
</telerik:RadAsyncUpload>
<telerik:RadButton ID="RadButton1" runat="server" Text="Apply" OnClick="RadButton1_Click">
</telerik:RadButton>
<telerik:RadButton ID="RadButton2" runat="server" Text="Page PostBack">
</telerik:RadButton>

C#:

protected void RadButton1_Click(object sender, EventArgs e)
{
    string[] uplodedfile = new string[20];
    //count of the uploaded file
    int count = RadAsyncUpload1.UploadedFiles.Count;
    int i=0;
    foreach (UploadedFile file in RadAsyncUpload1.UploadedFiles)
    {
        //filename of the uploaded file
        uplodedfile[i] = file.FileName;
        i++;
    }
}

Thanks,
Shinu.

[TelDev]

Thank you again Shinu,

My case is bit different. If you see the attached image I have 2 grids and a upload control. I need a postbacktrigger for grid1 and also apply button.

Can I use 2 controls for postbacktriggers property?

I have found the documentation, it seems I can set multiple controls.

http://www.telerik.com/help/aspnet-ajax/asyncupload-persist-uploaded-files.html

Thanks
TelDev

[Shinu]

Hi TelDev,

It is possible to set more than one control in the PostbackTriggers property of RadAsyncUpload. Please have a look into the following code snippet to set two controls in PostbackTriggers property.

ASPX:

<telerik:RadGrid ID="RadGrid1" AllowPaging="true" runat="server" DataSourceID="SqlDataSource1"

    AutoGenerateColumns="true">

    <MasterTableView>

        <Columns>

            <telerik:GridBoundColumn HeaderText="OrderID" DataField="OrderID" UniqueName="OrderID">

            </telerik:GridBoundColumn>

            <telerik:GridBoundColumn HeaderText="CustomerID" DataField="CustomerID" UniqueName="CustomerID">

            </telerik:GridBoundColumn>

            <telerik:GridBoundColumn HeaderText="ShipName" DataField="ShipName" UniqueName="ShipName">

            </telerik:GridBoundColumn>

        </Columns>

    </MasterTableView>

</telerik:RadGrid>

<telerik:RadButton ID="RadButton1" runat="server" Text="Apply" OnClick="RadButton1_Click">

</telerik:RadButton>

<telerik:RadAsyncUpload ID="RadAsyncUpload1" runat="server" PostbackTriggers="RadButton1,RadGrid1">

</telerik:RadAsyncUpload>

Thanks,
Shinu.