c# - 将 XML 数据保存到 SQL Server 表

Question

我有这个 xml 文件，我想将值 NUMBER(例如)保存到 SQL Server 表中。

<ORDER>
  <ORDER_HEADER>
    <NUMBER>10945</NUMBER>
    <TIME>7.8.2013 12:45:20</TIME>
    <NOTE>this is Note</NOTE>   
  </ORDER_HEADER>
</ORDER> 

这是我的代码:

XDocument doc = XDocument.Load("C:\\Users\\L\\Desktop\\data.xml");
var NUMBER = doc.Descendants("NUMBER");
var TIME = doc.Descendants("TIME");
var NOTE = doc.Descendants("NOTE");

foreach (var cislo in NUMBER)
{
    SqlConnection conn = new SqlConnection("Data Source=***");
    conn.Open();

    using (SqlCommand cmd = conn.CreateCommand())
    {
       cmd.CommandText = "Update CISLO SET cislo = @cislo1;";
       cmd.Parameters.AddWithValue("@cislo1", doc);

       cmd.ExecuteNonQuery();
    }
 }

 MessageBox.Show("OK");

我收到这个错误:

There is no mapping from object type System.Xml.Linq.XDocument to a known managed provider native type.

在行上:

cmd.ExecuteNonQuery();

Answer 1

您正在将“doc”(您的 XDocument)传递到参数中。尝试改变

cmd.Parameters.AddWithValue("@cislo1", doc);

到

cmd.Parameters.AddWithValue("@cislo1", cislo);