I am trying to understand this adapter thing but have some difficulties. :)

Can anyone give me an example on how to make an adapter for an asp:image control.

I have seen the adapters for the menu and it looks great. I even understand how it works, but cannot 'translate' this to a simple control like asp:image.

I am particularly interested in this as i want to have my own control over the properties of a control.

Thanx in advance.

Jean

Here a C# version of something I cranked out without testing... so good luck!

using System;
using System.Data;
using System.Collections;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

namespace YourNameHere
{
    public class ImageAdapter : System.Web.UI.WebControls.Adapters.WebControlAdapter
    {
        public DataListAdapter()
        {
        }

        /// ///////////////////////////////////////////////////////////////////////////////
        /// PROTECTED       
       
        protected override void OnInit(EventArgs e)
        {
            base.OnInit(e);
            RegisterScripts();
        }

        protected override void RenderBeginTag(HtmlTextWriter writer)
        {
            if ((Control != null) && (Control.Attributes["CssSelectorClass"] != null) && (Control.Attributes["CssSelectorClass"].Length > 0))
            {
                writer.WriteLine();
                writer.WriteBeginTag("span");
                writer.WriteAttribute("class", Control.Attributes["CssSelectorClass"]);
                writer.Write(HtmlTextWriter.TagRightChar);
                writer.Indent++;
            }

            writer.WriteLine();
            writer.WriteBeginTag("span");
            writer.WriteAttribute("class", "YourNameHere-Image");
            writer.Write(HtmlTextWriter.TagRightChar);           
        }

        protected override void RenderEndTag(HtmlTextWriter writer)
        {
            writer.WriteEndTag("span");

            if ((Control != null) && (Control.Attributes["CssSelectorClass"] != null) && (Control.Attributes["CssSelectorClass"].Length > 0))
            {
                writer.Indent--;
                writer.WriteLine();
                writer.WriteEndTag("span");
            }

            writer.WriteLine();
        }

        protected override void RenderContents(HtmlTextWriter writer)
        {
            Image image = Control as Image;
            if (image != null)
            {
                writer.Indent++;

                writer.WriteBeginTag("img");
                writer.WriteAttribute("src", Page.ResolveUrl(image.ImageUrl));
                writer.WriteAttribute("alt", image.ToolTip);
                writer.Write(HtmlTextWriter.SelfClosingTagEnd);

                writer.Indent--;
                writer.WriteLine();
            }
        }

        /// ///////////////////////////////////////////////////////////////////////////////
        /// PRIVATE       

        private void RegisterScripts()
        {
        }
    }
}

In your .browser file you would need to add elements like these:

<adapter controlType="System.Web.UI.WebControls.Image" adapterType="YourNameHere.ImageAdapter" />

Then you would want to start customizing the code you find in RenderContents. Make sense?

Thanks a lot!

Yes it makes sense.

The reason i need this is that i have to change the src tag of each image. I have no access to the source of the website so this is ideal solution to adapt the rendering of every asp:image.