ADO.NET - 更新多个数据表

Question

所以我有一些像这样的代码：

 DataSet dataSet = new DataSet();    
     DataTable dataTable1 = new DataTable("Table1"); 
     DataTable dataTable2 = new DataTable("Table2"); 
     DataTable dataTable3 = new DataTable("Table3"); 
     DataTable dataTable4 = new DataTable("Table4"); 
     dataSet.Tables.Add(dataTable1); 
     dataSet.Tables.Add(dataTable2); 
     dataSet.Tables.Add(dataTable3); 
     dataSet.Tables.Add(dataTable4); 

     SqlDataAdapter dataAdapter1 = new SqlDataAdapter("SELECT * FROM Table1 WHERE ID = 1", sqlConnection); 
     SqlDataAdapter dataAdapter2 = new SqlDataAdapter("SELECT Column1, Column2, Column3 FROM Table2", sqlConnection); 
     SqlDataAdapter dataAdapter3 = new SqlDataAdapter("SELECT Column1, Column2, Column3 FROM Table3", sqlConnection); 
     SqlDataAdapter dataAdapter4 = new SqlDataAdapter("SELECT Column1, Column2, Column3 FROM Table4", sqlConnection); 

     SqlCommandBuilder commandBuilder1 = new SqlCommandBuilder(dataAdapter1); 
     SqlCommandBuilder commandBuilder2 = new SqlCommandBuilder(dataAdapter2); 
     SqlCommandBuilder commandBuilder3 = new SqlCommandBuilder(dataAdapter3); 
     SqlCommandBuilder commandBuilder4 = new SqlCommandBuilder(dataAdapter4);    

     dataAdapter1.Fill(dataTable1); 
     dataAdapter2.FillSchema(dataTable2, SchemaType.Source); 
     dataAdapter3.FillSchema(dataTable3, SchemaType.Source); 
     dataAdapter4.FillSchema(dataTable4, SchemaType.Source); 

     //do a bunch of code that updates the one row from Table1 
     //and adds lots of new rows to Table2, Table3, Table4 

     dataAdapter1.Update(dataTable1); 
     dataAdapter2.Update(dataTable2); 
     dataAdapter3.Update(dataTable3); 
     dataAdapter4.Update(dataTable4); 
     dataSet.AcceptChanges(); 

反正是有使这个简单了很多？如果计算机在“dataAdapter2.Update（dataTable2）;”之后崩溃，会发生什么情况？我希望能够以某种方式使用一个更新呼叫来更新所有内容。那可能吗？

此外，这是甚至是最好的方式来做到这一点？使用“this”在多个表中创建一堆新行，具体取决于某个特定表中某个特定行的内容。

Answer 1

您可以将数据集传递到DataAdapter的更新语句 中，该语句将更新数据集中的所有表。 更新：不，它不。 DataAdapter始终只更新一个表。以MSDN documentation为起点，将DataSet作为其参数的Update（）重载“从名为”Table“的DataTable中为指定DataSet中的每个插入，更新或删除行调用相应的INSERT，UPDATE或DELETE语句。 “对困惑感到抱歉。但答案的其余部分仍然有效。

如果你想确保所有的更新成功或失败作为一个原子单元，使用SqlTransaction对象：

DataSet ds = new DataSet(); 
// do something with the dataset 

SqlDataAdapter dataAdapter = new SqlDataAdapter(); 
SqlConnection cn = new SqlConnection(connString); 
cn.Open(); 

SqlTransaction trans = cn.BeginTransaction(); 

SqlDataAdapter dataAdapter = new SqlDataAdapter(); 

// set the InsertCommand, UpdateCommand, and DeleteCommand for the data adapter 

dataAdapter.InsertCommand.Transaction = trans; 
dataAdapter.UpdateCommand.Transaction = trans; 
dataAdapter.DeleteCommand.Transaction = trans; 

try 
{ 
    dataAdapter.Update(ds); 
    trans.Commit(); 
} 
catch 
{ 
    trans.Rollback(); 
} 

cn.Close();