Last Updated: 28 Mar 2019 08:50 by ADMIN
Created by: Andreas
Comments: 0
Category: ColorPicker
Type: Bug Report
The color picker doesn't looks good when zooming in the browser.

Try zooming to 120% and run your demo:


You need to reload the page after zooming!

The Web colors wraps, and the HSB/HSV tabs also wraps a lot!

Also see this thread:
Last Updated: 26 Mar 2019 14:57 by ADMIN
Created by: Vessy
Comments: 0
Category: ColorPicker
Type: Bug Report
RadColorPicker remains clickable when its set_enabled(false) method is called.

Steps to reproduce:
1. Run this code:

        <telerik:RadColorPicker ID="RadColorPicker1" runat="server" ShowIcon="true" ShowEmptyColor="false" RenderMode="Lightweight" />
        <br /><br /><br />
        <select id="mySelect" onchange="EnableDisableColorPicker()">
            <option value="1">1</option>
            <option value="2" selected="selected">2</option>

            function EnableDisableColorPicker() {
                var x = document.getElementById("mySelect").value;
                var colorPicker = $find("<%= RadColorPicker1.ClientID %>");
                if (x == 1) {

                } else {


2. Select option 1.

Result: RadColorPicker gets disabled, but remains clickable
Last Updated: 17 Jan 2019 10:10 by ADMIN

When a RadColorPicker that only has the HSB or HSV palette is made visible or added during an AJAX request, it throws the following error:

Sys.ArgumentOutOfRangeException: Height should be an integer bigger than 1

This is caused by the lack of dimensions while the component is initializing on the client side and, for example, RGBSliders, manages to initialize correctly. The control must either have default dimensions for all modes, or to perform check for undefined dimensions provided by the browser, or both.

A workaround is to add the RGBSliders mode as the first mode so the control can initialize, and use a small JS handler that will switch to the HSB/HSV mode and hide the RGB mode.

Here follows an example that includes the workaround:

<asp:UpdatePanel ID="mainUpdatePanel" runat="server">
        <telerik:RadButton ID="RadButton1" runat="server" Text="RadButton"></telerik:RadButton>
        <asp:Panel runat="server" ID="wrappingPanel">
            <%--WORKAROUND PART 1 - add the RGBSLiders tab first--%>
            <telerik:RadColorPicker ID="RadColorPickerStart" runat="server" PaletteModes="RGBSliders, HSB"></telerik:RadColorPicker>
            <%--WORKAROUND PART 2
            The script is wrapped in a RadScriptBlock so it gets
            registered and executed after the partial postback. By default, it will not be parsed--%>
            <telerik:RadScriptBlock runat="server" ID="rsb1">
                    Sys.Application.add_load(function () {
                        //a panel is used here to make looking for the color pickers added in it easier
                        //you can replace getting the reference to the color picker with any preferred method
                        $telerik.$("[id$='wrappingPanel']").find(".RadColorPicker").each(function (index, elem) {
                            if (elem && elem.control) {
                                var picker = elem.control;
                                setTimeout(function () {
                                    //trigger the internal logic of the control that will switch the tabs
                                    //in this case - the HSB tab is "clicked"
                                    picker._tabClicked({ target: $telerik.$(picker._tabStrip).find("a[title='HSB']")[0] });
                                    //hide the RGB tab
                                }, 0);//the timeout is needed so the control can initialize before we manipulate it
Protected Sub RadButton1_Click(sender As Object, e As EventArgs) Handles RadButton1.Click
    wrappingPanel.Visible = True
End Sub

Last Updated: 11 Apr 2016 08:40 by ADMIN
Created by: Danail Vasilev
Comments: 0
Category: ColorPicker
Type: Bug Report

Last Updated: 05 Feb 2016 16:43 by ADMIN
When the set_keepInScreenBounds method is called and you pass a true parameter, the popup of RadColorPicker is only partially visible (the tabs are hidden). 
Last Updated: 02 Feb 2016 17:29 by ADMIN
When a Lightweight RadColorPicker has ShowIcon="true" and KeepInScreenBounds="true" configured, its tabs will be partially visible on the page.

The following workaround can be used for the time being:

            Telerik.Web.UI.ColorPicker.LightweightRenderer.prototype.getPaletteHeight = function ($palette) {
                var paletteHeight = $palette.height() +
                return paletteHeight;
Last Updated: 16 Oct 2015 07:19 by ADMIN
Possible workarounds:

-set display: inline-block to the control wrapper -.RadColorPicker {display: inline-block;}

- use Classic RenderMode

- improve the z-index and backgrounds of the anchor:

		div.RadColorPicker.lwr div.rcpIcon a,
		div.RadColorPicker.lwr div.rcpIcon a:hover
			z-index: 11;
			background-color: transparent;
			background-image: none;

where the lwr class is to be added from the server code to avoid breaking the Classic render mode:

	protected void Page_Load(object sender, EventArgs e)
		if (RadColorPicker1.RenderMode == Telerik.Web.UI.RenderMode.Lightweight)
			RadColorPicker1.CssClass = "lwr";
Last Updated: 04 Sep 2013 08:13 by Yousef Salimpour
Created by: Yousef Salimpour
Comments: 0
Category: ColorPicker
Type: Bug Report
ColorPicker Causes unwanted scrollbar in page if It is used in a RTL page.
It's because of setting palleteWrapper.style.left to -9999px in hidePalette function in RadColorPicker.js.
It can be fixed if you set palleteWrapper.style.left to something like 0 or 50%. It will be out of page due to -9999px as top value anyway.