Reset RadBinaryImage

[Luciano Kaesemodel]

Hello guys...

How can I reset a RadBinaryImage (to show no image at all) ?

I tried that: 

 rbiImagem.DataValue = null;

 rbiImagem.DataBind();

But the image still showing up...

Any idea?

Thanks...

[Georgi Krustev]

Hello Luciano,

The required functionality is not supported by the current version of the RadControls for ASP.NET AJAX.
It will be included in Beta release of our controls which is scheduled for the middle of October. The official release is in the beginning of the November.

Regards,
Georgi Krustev
the Telerik team

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[Alastair Hole]

Has this been implemented? I can't get it to work...

[Nikolay Rusev]

Hello Alastair,

You can bind RadBinaryImage to empty byte array which will result in clearing the image.

BI.DataValue = new byte[0] { };
BI.DataBind();

All the best,
Nikolay
the Telerik team

[Erik]

Hi all,

This is actually not working in VB.NET. If I do this:

If bln_New Or .PictureSmall Is Nothing Then

  RadBinaryImage1.DataValue = New Byte(0) {}

Else

  RadBinaryImage1.DataValue =  .PictureSmall

End If
RadBinaryImage1.DataBind()


(.PictureSmall is a blob in my OpenAccess model, type: Byte() Backend SQL Server)

Now, when a record has no PictureSmall set  (db = NULL, model = nothing) I get an error:
  The provided binary data may not be valid image or may contains unknown header
This error accours somewhere down the tree, while rendering I guess, in the page_OnError.

I tried a few different things: 
  RadBinaryImage1.DataValue = New Byte(0) {0}
  RadBinaryImage1.DataValue = Nothing

The first gives the error again, and the second just shows the previous image if this record does not have and image

A RadBinaryImage1.Clear would be a handy feature...

How can I clear the image?

[Vasil]

Hello Erik,

Depends what is your goal. What you mean by reset the image? By default there is no image, but you will get exception that you need valid data in order to display.

For going to the original state of the RadBinaryImage you can use something like:

image.DataValue = null;
image.ImageUrl = "";
image.HttpHandlerUrl = "";

//another option:
image.PersistDataIfNotVisible = false;
image.Visible=false;

If you don't want to show image at all, I would suggest you to simply set Visible=false.

Regards,
Vasil
Telerik

[Erik]

Hi Vesil,

Yes, thanks, image.ImageUrl = "" will do the trick for me. Thanks.

Erik