Alex,
No, that's a dotnetgallery built-in button.
<CE:Gallery
id="gallery1"
runat="server"
Height="300"
Width="600"
Column = "6"
MaxImageWidth="600"
BackColor="#ffffff"
CellPadding="3"
AutoResizeUploadedImages = "true"
CellSpacing="3"
ForeColor="#000000"
BorderColor="#ffffff"
BorderStyle="solid"
BorderWidth="0"
CssClass="container"
ShowThumbNailName="true"
ShowThumbNailSize="true"
ShowThumbNailDate="true"
ShowThumbNailDescription="true"
ShowBatchBuild="true"
FolderPath = "/imagegallerydemo2"
></CE:Gallery>
Make sure the ShowBatchBuild property is set to true.
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