User1465073448 posted
I'm using CSS Friendly to override the Render() function in order to make the postback url (the action attribute of the form) the rewritten url, it works fine until i decide to use AJAX in my application. I always get a "Object reference not set to an instance
of an object." exception every time a ajax request is made. I believe it's the "((System.Web.UI.PageRequestManager.ParserHtmlTextWriter)(writer)).FormAction" that is null, but I was unable to access to it because of some "protected level" ?!!?? Here's the
code:
<browsers>
<browser refID="Default">
<controlAdapters>
<adapter controlType="System.Web.UI.HtmlControls.HtmlForm"
adapterType="FormFixControlAdapter" />
</controlAdapters>
</browser>
</browsers>
using System;
using System.Data;
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;
/// <summary>
/// Summary description for FormFixHtmlTextWriter
/// </summary>
public class FormFixHtmlTextWriter : HtmlTextWriter
{
public FormFixHtmlTextWriter(HtmlTextWriter writer) : base(writer)
{
this.InnerWriter = writer;
}
public override void WriteAttribute(string name, string value, bool fEncode) {
//if the attribute we are writing is "action" attribute then
//replace the value with the VirtualUrl
if (string.Compare(name, "action", true) == 0) {
value = HttpContext.Current.Request.RawUrl;
}
base.WriteAttribute(name, value, fEncode);
}
}
public class FormFixControlAdapter : System.Web.UI.Adapters.ControlAdapter {
protected override void Render(HtmlTextWriter writer) {
base.Render(new FormFixHtmlTextWriter(writer)); //exception occured on this line
}
}
