我要评论#region 读写xml文件的2个小函数，2005 4 2 by hyc
public void setxmlfilevalue(string xmlpath,string appkey,string appvalue)//写xmlpath是文件路径+文件名，appkey是 key name，appvalue是value
{
xmldocument xdoc = new xmldocument();
xdoc.load(xmlpath);
xmlnode xnode;
xmlelement xelem1;
xmlelement xelem2;
xnode = xdoc.selectsinglenode("//appsettings");
xelem1 = (xmlelement)xnode.selectsinglenode("//add[@key='" + appkey + "']");
if ( xelem1 != null )
{
xelem1.setattribute("value",appvalue);
}
else
{
xelem2 = xdoc.createelement("add");
xelem2.setattribute("key",appkey);
xelem2.setattribute("value",appvalue);
xnode.appendchild(xelem2);
}
xdoc.save(xmlpath);
}
public void getxmlfilevalue(string xmlpath,string appkey,ref string appvalue)//读xmlpath是文件路径+文件名，appkey是 key name，appvalue是value
{
xmldocument xdoc = new xmldocument();
xdoc.load(xmlpath);
xmlnode xnode;
xmlelement xelem1;
xnode = xdoc.selectsinglenode("//appsettings");
xelem1 = (xmlelement)xnode.selectsinglenode("//add[@key='" + appkey + "']");
if ( xelem1 != null )
{
appvalue=xelem1.getattribute ("value");
}
else
{
// messagebox.show ("there is not any information!");
}
}
#endregion
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