Derived DataTable has no DataSet

Question

我有一个DataTable和DataSet的问题。我们创建了我们自己的ObservableDataTable，它可以创建一个ObservableDataRow。要创建DataTable，我们使用DataSet。为了创建自定义数据表，我们复制由DataSet创建的表的模式。但现在我有这个问题，我们的新DataTable没有DataSet。这是我们创造的datatabe方式：

public class ObservableDataTable : DataTable 
{ 
    /// <summary> 
    /// Initializes a new instance of the System.Data.DataTable class with no arguments. 
    /// </summary> 
    public ObservableDataTable() : base() 
    { 

    } 

    /// <summary> 
    /// Create datatable from existing table and copy schema 
    /// </summary> 
    /// <param name="table">Table which contains a schema to copy</param> 
    public ObservableDataTable(DataTable table) : base() 
    { 
     using (MemoryStream stream = new MemoryStream()) 
     { 
      // Get xml schema for copy purpose 
      table.WriteXmlSchema(stream); 
      stream.Position = 0; 
      this.ReadXmlSchema(stream); 
     } 
    } 
} 

创建实例：

DbDataAdapter adapter = GetAdapter(); 
endOfResult = false; 
command.Connection = connection; 
countCommand.Connection = connection; 
adapter.SelectCommand = command; 
currentDataSet = new DataSet(); 
adapter.FillSchema(currentDataSet, SchemaType.Source, "ResultTable"); 

resultTable = new ObservableDataTable(currentDataSet.Tables["ResultTable"]); 

observableCollection = new RadObservableCollection<ObservableDataRow>(); 

我如何分配的DataSet派生DataTable？

也许有人曾经这样做过。非常感谢你！

Answer 1

检查这一点，您可以将您的数据表添加到数据集的表集合，然后你的表具有数据集：

// Your code here 
resultTable = new ObservableDataTable(currentDataSet.Tables["ResultTable"]); 
DataSet ds = new DataSet(); 
ds.Tables.Add(resultTable); 
// Now your datatable have dataset : 
int tableCount = resultTable.DataSet.Tables.Count;