服务器控件ASP.NET中的服务器控件

Question

I'm trying to learn how to make server controls for asp.net. I use DevExpress which are 3rd party server controls. I'm trying to add a DevExpress button to my server control.

public class Class1 : CompositeControl
{
    private DevExpress.Web.ASPxEditors.ASPxButton btnTest;

    protected override void Render(HtmlTextWriter writer)
    {            
        btnTest.RenderControl(writer);
    }

    protected override void CreateChildControls()
    {
        btnTest = new DevExpress.Web.ASPxEditors.ASPxButton();
        btnTest.Text = "wazzzup"; 
        Controls.Add(btnTest);
    }
}

For some reason the button will not show up in the design view unless there is another devexpress control on the same page as my server control. Any idea how to fix this?

Answer 1

由于您是从CompositeControl继承的，因此您不应覆盖Render。