數據集僅保留一個表

Question

我填充數據集兩次，

表名從未正確設置。 我在數據集中只看到一個表格

什麼是機會？

public static DataSet GetSchoolTree() 
     { 
      BLLBase.CreateConnection(); 
      BLLBase.Connection.Open(); 

      DataSet dataSet = new DataSet("SS"); 


      Stages.GetStages(ref dataSet); 
      Schools.GetSchools(ref dataSet); 

      BLLBase.Connection.Close(); 

      dataSet.Relations.Add(dataSet.Tables["Schools"].Columns["ID"], dataSet.Tables["dbo.Stages"].Columns["School_ID"]); 

      return dataSet; 
     } 

internal static void GetSchools(ref DataSet dataSet) 
     { 
      SqlDataAdapter adapter = new SqlDataAdapter(); 
      adapter.TableMappings.Add("dbo.Schools", "Schools"); 

      SqlCommand command = new SqlCommand(); 
      command.CommandText = "[dbo].[SR_School_ALL]"; 
      command.CommandType = System.Data.CommandType.StoredProcedure; 
      command.Connection = BLLBase.Connection; 
      adapter.SelectCommand = command; 

      adapter.Fill(dataSet); 
     } 

internal static void GetStages(ref DataSet dataSet) 
     { 
      SqlDataAdapter adapter = new SqlDataAdapter(); 
      adapter.TableMappings.Add("dbo.Stages", "Stages"); 

      SqlCommand command = new SqlCommand(); 
      command.CommandText = "[dbo].[Stp_Stages_All]"; 
      command.CommandType = System.Data.CommandType.StoredProcedure; 
      command.Connection = BLLBase.Connection; 
      adapter.SelectCommand = command; 

      adapter.Fill(dataSet); 
     } 

感謝

Answer 1

在數據集中.fill僞調用（）將重新加載它，新成果無法加載到不同的表。相反，請在數據集中的表上調用.Fill（）。你可能想嘗試這樣的事情：

var ds = new DataSet(); 
ds.Tables.Add(new DataTable("first")); 
adapter1.Fill(ds.Tables["first"]); 
ds.Tables.Add(new DataTable("second")); 
adapter2.Fill(ds.Tables["second"]);