System.Web.Compilation.TemplateControlCompiler.CompileExpression C# (CSharp) Method

		internal CodeExpression CompileExpression (MemberInfo member, Type type, string value, bool useSetAttribute)
		{
			// First let's find the correct expression builder
			value = value.Substring (3, value.Length - 5).Trim ();
			int colon = value.IndexOf (':');
			if (colon == -1)
				return null;
			string prefix = value.Substring (0, colon).Trim ();
			string expr = value.Substring (colon + 1).Trim ();
			
			CompilationSection cs = (CompilationSection)WebConfigurationManager.GetWebApplicationSection ("system.web/compilation");
			if (cs == null)
				return null;
			
			if (cs.ExpressionBuilders == null || cs.ExpressionBuilders.Count == 0)
				return null;

			System.Web.Configuration.ExpressionBuilder ceb = cs.ExpressionBuilders[prefix];
			if (ceb == null)
				return null;
			
			string builderType = ceb.Type;
			Type t;
			
			try {
				t = HttpApplication.LoadType (builderType, true);
			} catch (Exception e) {
				throw new HttpException (String.Format ("Failed to load expression builder type `{0}'", builderType), e);
			}

			if (!typeof (System.Web.Compilation.ExpressionBuilder).IsAssignableFrom (t))
				throw new HttpException (String.Format ("Type {0} is not descendant from System.Web.Compilation.ExpressionBuilder", builderType));

			System.Web.Compilation.ExpressionBuilder eb = null;
			object parsedData;
			ExpressionBuilderContext ctx;
			
			try {
				eb = Activator.CreateInstance (t) as System.Web.Compilation.ExpressionBuilder;
				ctx = new ExpressionBuilderContext (HttpContext.Current.Request.FilePath);
				parsedData = eb.ParseExpression (expr, type, ctx);
			} catch (Exception e) {
				throw new HttpException (String.Format ("Failed to create an instance of type `{0}'", builderType), e);
			}
			
			BoundPropertyEntry bpe = CreateBoundPropertyEntry (member as PropertyInfo, prefix, expr, useSetAttribute);
			return eb.GetCodeExpression (bpe, parsedData, ctx);
		}