telerik mvc grid image button

I have a telerik mvc grid , server binding , each row has "Select" button , I want to let the button to has "Image" I use the following definition but it doesn't work

columns.Command(commands => commands.Select().ButtonType(GridButtonType.Image)).Title("");

why?

another question , can I change the image of the 开发者_开发知识库button , if yes, how?

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my problem was that , I put the style in a script in the header solution : put the style in a script in the body

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You can give .HtmlAttributes your button like

columns.Command(commands => commands.Select().ButtonType(GridButtonType.Image)).HtmlAttributes(new { @class="btn"}).Title("");

//and you have to override the image with your class
.btn .t-icon{
    background-image: url('../../Images/img.png');
}