Derived DataTable has no DataSet

Question

我有一個DataTable和DataSet的問題。我們創建了我們自己的ObservableDataTable，它可以創建一個ObservableDataRow。要創建DataTable，我們使用DataSet。爲了創建自定義數據表，我們複製由DataSet創建的表的模式。但現在我有這個問題，我們的新DataTable沒有DataSet。這是我們創造的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); 
     } 
    } 
} 

創建實例：

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？

也許有人曾經這樣做過。非常感謝你！

Answer 1

檢查這一點，您可以將您的數據表添加到數據集的表集合，然後你的表具有數據集：

// 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;