ASP.NET - Pasar dato HTML plano a ASP

Hola, buenos días. Tengo el siguiente problema:

Resulta que estoy haciendo una aplicación en ASP.NET y tengo el problema que no me deja hacer una cosa que yo quiero hacer...

El caso es que quiero abrir una ventana por medio de un Pop-Up con Javascript, aunque no es ese el problema, sino que yo quiero mandar un dato que corresponde a la parte de HTML plano a ASP para poder realizar una consulta a posteriori.

Lo solucioné con Request en un caso, con Request.Querystring o Request.Form (este último caso).

Sin embargo, tengo este problema que me trae de cabeza y es el siguiente:

Hago un Request.Form("newstitle") y el resultado es nulo guau.

Claro que me imagino que es lo siguiente:

BIENVENIDO

No me deja porque es clase. Y el caso es que podría usar un name, pero pierdo el estilo...

¿Existe alguna manera de hacer este trasvase de dato? Porque me ayudaría muchísimo para realizar la aplicación.

Pues eso, muchísimas gracias y un saludo.

si pasas datos por la URL recogelos con Request.Params("newstitle"), prueba con eso

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