Retrieve image from Database

[Eduardo]

Hi guys,

I'm using RadImageEditor inside a FormView and i'm trying to retrieve a imagem from a Postgre Database. I'm also using OpenAccessDataSource.

I follow this http://demos.telerik.com/aspnet-ajax/imageeditor/examples/default/defaultcs.aspx and this http://www.telerik.com/community/forums/aspnet-ajax/image-editor/combine-imageeditor-control-with.aspx links and i'm still not able to solve the issue.

In my aspx page i have the following code:

<telerik:RadImageEditor ID="RadImageEditor1" runat="server"  OnImageLoading="RadImageEditor1_ImageLoading" Width="720px" Height="430px">
</telerik:RadImageEditor>

In code behind i have the following:

protected void RadImageEditor1_ImageLoading(object sender, ImageEditorLoadingEventArgs args)

{

    DATA db = new DATA();

    var r = (from a in db.Tb_example where a.example_id == Convert.ToInt64(frmExample.DataKey.Value) select a).FirstOrDefault();

    if (r.Image != null)

    {

        MemoryStream s = new MemoryStream(r.Image.ToArray());

        Telerik.Web.UI.ImageEditor.EditableImage img = new Telerik.Web.UI.ImageEditor.EditableImage(s);

     args.Image = img;

     args.Cancel = true;

    }

}

I'm getting the following error message:

"Sys.WebForms.PageRequestManagerServerErrorException: Object reference not set to an instance of an object."

I'm sure the image is in the Database because i'm able to see it through RadBinaryImage control.

Any help will be appreciated. Thanks in advance.
  

[Eduardo]

I did the following changes and the RadImageEditor began to work:

- I removed the RadImageEditor from within the FormView;

- I updated the version of Telerik Controls.

But it would be much better if i could maintain the RadImageEditor inside the FormView. Is that possible?

[Rumen]

Hi,

How exactly did you bind the FormView: do you use some datasource control or you bind it programmatically?
You can call the DataBind method of the FormView in the Page_Load event. If the FormView is bind on PreRender this will be late and the ImageEditor will not render the image and throw the mentioned error.

If you are unable to solve the issue, please isolate it in a sample working project and send it for examination via a support ticket.

Best regards,
Rumen
the Telerik team