How to get data from xml file asp.net core 7 related to node barcode n

I work on asp.net core 7 razor page model . I need to use config file appsettings.json to get value of tag

inside barcode i will get tag and inside tag I will get text inside tag

so file DefaultValues.xml content as below :

		
			^XA~TA000~JSN^LT0^MNM^MTD^PON^PMN^LH0,0^JMA^PR2,2^MD18^JUS^LRN^CI0^XZ
			^XA
			^MMT
			^LL0184
			^PW320
			^LS0
			^PA1,1,1,1
			^JUS
			^BY1,3,58^FT250,17^BCI,,N,N
			^FD>:VARbarcode^FS
			^FT220,1^A0I,20,20^FH\^FDVARFont^FS
			^PQVARQty,0,1,Y^XZ
			
		
		
			^XA~TA000~JSN^LT0^MNM^MTD^PON^PMN^LH0,0^JMA^PR2,2^MD18^JUS^LRN^CI0^XZ
			^XA
			^MMT
			^LL0184
			^PW320
			^LS0
			^PA1,1,1,1
			^JUS
			^FT249,88^A0I,25,24^FH\^FDPRICE: VARPrice^FS
			^BY1,3,58^FT250,17^BCI,,N,N
			^FD>:VARbarcode^FS
			^FT220,1^A0I,20,20^FH\^FDVARFont^FS
			^PQVARQty,0,1,Y^XZ
			
		
	

and expected result i need to get is :

^XA~TA000~JSN^LT0^MNM^MTD^PON^PMN^LH0,0^JMA^PR2,2^MD18^JUS^LRN^CI0^XZ^XA^MMT^LL0184^PW320^LS0^PA1,1,1,1^JUS^FT249,88^A0I,25,24^FH\^FDPRICE: VARPrice^FS^BY1,3,58^FT250,17^BCI,,N,N^FD>:VARbarcode^FS^FT220,1^A0I,20,20^FH\^FDVARFont^FS^PQVARQty,0,1,Y^XZ

so please how to define key and value on appsettings.json and how to get value of text inside barcode-nprinter-para by csharp ?