See Also: ResourceExpressionFields Members
When a page is parsed, the values contained in a resource expression are parsed and stored in an instance of the System.Web.Compilation.ResourceExpressionFields class. This System.Web.Compilation.ResourceExpressionFields object contains two fields, ResourceExpressionFields.ClassKey and ResourceExpressionFields.ResourceKey. These fields are drawn from the values of a resource expression in either the explicit (<%$ Resources: ClassKey, ResourceKey %>) or implicit (meta:resourcekey="ResourceKey") form.
The ResourceExpressionFields.ClassKey property identifies the class name of a resource that is mapped to a resource file. For example, to reference a resource file named Financial.resx, or a localized version such as Financial.en-GB.resx, the resource expression would appear as <%$ Resources: Financial, ResourceKey %>. After parsing, the ResourceExpressionFields.ClassKey property would return "Financial" as its value.
The ResourceExpressionFields.ResourceKey property identifies the particular key/value pair to be retrieved from the file. If the Financial.resx file contains a key called Currency, that value could be specified with the resource expression <%$ Resources: Financial, Currency %>. After parsing, the ResourceExpressionFields.ResourceKey property would return "Currency" as its value.
The resource expression is parsed through the ResourceExpressionBuilder.ParseExpression(string) method.
Sensitive information should not be stored in a resource file.