编辑XML对象 - 连接字符串

如果你想使用点符号,你可以这样做:

$node = $appConfig.configuration.connectionStrings.add |
        Where-Object {$_.name -eq $dbName}
$node.connectionString = $updatedConnectionString
$appConfig.Save()

或者像这样(如果您不想在修改其属性之前将所选节点分配给变量):

($appConfig.configuration.connectionStrings.add | Where-Object {$_.name -eq $dbName}).connectionString = $updatedConnectionString
$appConfig.Save()

另一种方法是将该SelectSingleNode()方法与XPath表达式一起使用,例如:

($appConfig.SelectSingleNode("//add[@name='$dbName']").connectionString = $updatedConnectionString
$appConfig.Save()