or
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />protected void Button1_Click(object sender, EventArgs e) { LabelStatus.Text = "Tooltiptext";
// Show tooltip<br> }<telerik:RadToolTipManager ID="RadToolTipManager1" runat="server" AnimationDuration="300" Width="400px" Height="80px" Animation="Slide" RelativeTo="BrowserWindow" Position="TopCenter" ShowEvent="FromCode" OnAjaxUpdate="OnAjaxUpdate" ShowCallout="true" >
<TargetControls>
<telerik:ToolTipTargetControl TargetControlID="LabelStatus" Value="LabelStatus" />
</TargetControls>
</telerik:RadToolTipManager>function OpenDialog(button) {var RadWindow = $find("<%=RadWindowConfirmDelete.ClientID%>");RadWindow.show();}<telerik:radwindow runat="server" id="RadWindowConfirmDelete" Behaviors="None" Skin="Web20" EnableViewState="False" VisibleOnPageLoad="false" > <ContentTemplate> <div style="float: left; margin: 10px 0px 0px 30px;" > <div > <telerik:RadBinaryImage ID="RadBinaryImageDelete24" runat="server" ImageUrl="~/Images/delete24.png" Height="24px" style="vertical-align:bottom;"> </telerik:RadBinaryImage> <asp:Label Font-Bold="true" ID="lbl_confirmar" Text="Confirma esborrat de línia de conciliació" runat="server" /> </div> <br /> <asp:Label Font-Italic="true" Id="lbl_confirm_item_text" Text="" runat="server" /> <br /> <telerik:RadButton ID="rbConfirm_OK" Text="Delete" runat="server" Skin="Web20" OnClick="rbConfirm_OK_Click" /> <asp:Label runat="server" ID="sep_butons_confirm_delete" Text ="" Width ="20px"></asp:Label> <telerik:RadButton ID="rbConfirm_Cancel" Text="Cancel" runat="server" Skin="Web20" OnClientClicked="CloseDialog" AutoPostBack="false" /> </div> </ContentTemplate></telerik:radwindow>foreach (ImageGalleryItemBase oItem in rdPics.Items)
{
oItem.Attributes.add("class", "MagicZoomPlus");
}

<LabelsAppearance DataFormatString="htt" RotationAngle="0" /><TooltipsAppearance BackgroundColor="#ffffff" Color="#5ab7de"> <ClientTemplate> <div><b>#=category#</b></div> <div>$#=value#</div> </ClientTemplate></TooltipsAppearance>