强类型数据集-XML序列化

Question

I have a typed dataset in my project and i need to import data from XML. I managed to import data to Tables collection in my typed dataset, but I need to have access to the data via Annotations - properties named the same as tables in my dataset.

this.ConfigDataSet.Reset();
this.ConfigDataSet.ReadXml(FileName,XmlReadMode.ReadSchema);
this.ConfigDataSet.AcceptChanges();

Do I have to copy data field by field?

I have something like this:

this.ConfigDataSet.Tables["TabName"].Rows.Count //returns 3 
this.ConfigDataSet.TabName.Rows.Count //returns 0

I write xml like this:

this.ConfigDataSet.AcceptChanges();
this.ConfigDataSet.WriteXml(FileName,XmlWriteMode.WriteSchema);

Answer 1

Check this out:

class Program
{
    static void Main(string[] args)
    {
        DataTable tbl = GetTable();
        DataSet ds = new DataSet();
        ds.Tables.Add(tbl);
        //file path to write xml file
        ds.WriteXml("test.xml");

        DataSet ds2 = new DataSet();
        //file path to read xml file
        ds2.ReadXml("test.xml");
    }
    static DataTable GetTable()
    {
        DataTable table = new DataTable();
        table.Columns.Add("Dosage", typeof(int));
        table.Columns.Add("Drug", typeof(string));
        table.Columns.Add("Patient", typeof(string));
        table.Columns.Add("Date", typeof(DateTime));

        table.Rows.Add(25, "Indocin", "David", DateTime.Now);
        table.Rows.Add(50, "Enebrel", "Sam", DateTime.Now);
        table.Rows.Add(10, "Hydralazine", "Christoff", DateTime.Now);
        table.Rows.Add(21, "Combivent", "Janet", DateTime.Now);
        table.Rows.Add(100, "Dilantin", "Melanie", DateTime.Now);
        return table;
    }
}

Check here for DataSet.WriteXml() and here for DataSet.ReadXml() ;

Answer 2

Solution:

WriteXml:

                ConfigDataSet.WriteXml(FileName);

ReadXml:

                    using (DataSet ds = new DataSet())
                {
                    ds.ReadXml(FileName);
                    ConfigDataSet.Load(ds.Tables[0].CreateDataReader(), LoadOption.OverwriteChanges, ConfigDataSet.TableName1);
                    ConfigDataSet.Load(ds.Tables[1].CreateDataReader(), LoadOption.OverwriteChanges, ConfigDataSet.TableName2);
                    ConfigDataSet.Load(ds.Tables[2].CreateDataReader(), LoadOption.OverwriteChanges, ConfigDataSet.TableName3);
                    ConfigDataSet.Load(ds.Tables[3].CreateDataReader(), LoadOption.OverwriteChanges, ConfigDataSet.TableName4);
                }

It is required to load each table separately, but it is better than load each field row by row.

Regards, Kuba.