Crop image in telerik radImageEditor

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C#

C#4.0

Telerik

Hi everyone,
i need to crop image based on dropdown values in telerik radImageEditor but not to click on 'Crop Icon' in Image Editor.

Look at the dropdown, it contains

<select id="selOption" runat="server" >
        <option value="0">StaticHeightAndWidth</option>
        <option value="1">Allow Crop</option>
    </select>

When i select 'StaticHeightandWidth' i want to apply static crop position(500 X 500) to Image(but not to display ImageEditorDialogs ). On Allow Crop , I need to display ImageEditorDialogs with crop positioning on Image.

Here it follows telerik code.

<telerik:RadImageEditor ID="RadImageEditor1" runat="server" ImageUrl="~/Images/1.jpg"
        Height="430px" Width="720px" OnClientLoad="OnClientLoad" OnClientCommandExecuting="OnClientCommandExecuting">
    </telerik:RadImageEditor>

Thanks in advance.