I made a test page based on your scenario and was unable to repro the issue.

I set the value of “IsEnabled” property to “false” on one of WebToolBar ToolCommand and set the “CommandDisabledStyle” collection property. I tested scenario using CommandDisabledStyle in design

<CommandDisabledStyle Font-Names="Segoe UI, Tahoma" Font-Size="14pt" ForeColor="DimGray">
</CommandDisabledStyle>

and server side code.

protected void Page_Load(object sender, EventArgs e)
{
    WebToolBar3.CommandDisabledStyle.Font.Name = "Tahoma";
    WebToolBar3.CommandDisabledStyle.Font.Size = FontUnit.Point(14);
}

For your information, I’m using the latest hotfix of WebDesktop.NET 3.0 (build 309) and WebUI.NET Framework 3.0 (build 752). If you have a running simple sample that replicates the issue, it would be much helpful if you could send the sample for further investigation.

Thanks for your reply. Currently i dont have a simplified version of the situation. so i am making one. Till than thanks.