如题，C#在xml文件中指定节点插入节点和属性

Question

<TableColumns><TableColumn id="MIEdIndex"><Width>6.61471cm</Width></TableColumn><TableColumn id="IndexUnit">在这里插入节点和属性<Width>2.19578cm</Width></TableColumn><TableColumn id="MIEdQty"><Width>2.88487cm</Width></TableColumn><TableColumn id="MIEdAoyQty"><Width>2.85988cm</Width></TableColumn><TableColumn id="MIEdUpQty"><Width>2.83488cm</Width></TableColumn><TableColumn id="MIEdUpAoyQty"><Width>2.85988cm</Width></TableColumn></TableColumns>插入节点后代码为这样，哪位大神帮帮忙<TableColumns><TableColumn id="MIEdIndex"><Width>6.61471cm</Width></TableColumn><TableColumn id="IndexUnit"><Visibility><Hidden>true</Hidden></Visibility><Width>2.19578cm</Width></TableColumn><TableColumn id="MIEdQty"><Width>2.88487cm</Width></TableColumn><TableColumn id="MIEdAoyQty"><Width>2.85988cm</Width></TableColumn><TableColumn id="MIEdUpQty"><Width>2.83488cm</Width></TableColumn><TableColumn id="MIEdUpAoyQty"><Width>2.85988cm</Width></TableColumn></TableColumns>

Answer 1

书c#对xml的应用，里面涉及到多有操作