求助: 读写,更新XML文件 -- 用vb.net 在线等!
有下面一个xml文件。
<INVOICE xmlns="http://XMLTEST">
<INVOICE_RECORD>
<ID>T00001</TX_ID>
<CUST_CODE>G001</CUST_CODE>
<BUYER_PART>Test001</EDI_CUST_PART>
<SELLER_PART>P0001</PARTNUM>
<REVISION>SH</REVISION>
<ERR_NUM />
</INVOICE_RECORD>
<INVOICE_RECORD>
<ID>T00002</TX_ID>
<CUST_CODE>G001</CUST_CODE>
<BUYER_PART>Test002</EDI_CUST_PART>
<SELLER_PART>P0002</PARTNUM>
<REVISION>SH</REVISION>
<ERR_NUM />
</INVOICE_RECORD>
<INVOICE_RECORD>
<ID>T00003</TX_ID>
<CUST_CODE>G001</CUST_CODE>
<BUYER_PART>Test003</EDI_CUST_PART>
<SELLER_PART>P0003</PARTNUM>
<REVISION>SH</REVISION>
<ERR_NUM />
</INVOICE_RECORD>
</INVRPT_ROOT>
要求能读取这个文件并更新节点ERR_NUM, 比如先要读出CUST_CODE,BUYER_PART的值,然后在把这两个值组合到一起“G001Test003",赋给ERR_NUM. 请问,该如何处理。最后能贴出比较详细的代码。
谢谢!