Populate a DataSet with multiple DataTable objects using multiple SELECT statements


using System;
using System.Data;
using System.Data.SqlClient;

class MultipleDataTables
{
  public static void Main()
  {
    SqlConnection mySqlConnection =new SqlConnection("server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI;");

    SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
    mySqlCommand.CommandText =
      "SELECT TOP 2 ID, FirstName, LastName " +
      "FROM Employee " +
      "ORDER BY ID;" +
      "SELECT ID, LastName " +
      "FROM MyEmployee " +
      "WHERE ID = 9;";

    SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
    mySqlDataAdapter.SelectCommand = mySqlCommand;
    DataSet myDataSet = new DataSet();
    mySqlConnection.Open();
    int numberOfRows = mySqlDataAdapter.Fill(myDataSet);
    Console.WriteLine("numberOfRows = " + numberOfRows);
    mySqlConnection.Close();

    myDataSet.Tables["Table"].TableName = "Employee";
    myDataSet.Tables["Table1"].TableName = "MyEmployee";

    foreach (DataTable myDataTable in myDataSet.Tables) {
      Console.WriteLine("\nReading from the " +
        myDataTable.TableName + "DataTable");
      foreach (DataRow myDataRow in myDataTable.Rows)
      {
        foreach (DataColumn myDataColumn in myDataTable.Columns)
        {
          Console.WriteLine(myDataColumn + "= " +
            myDataRow[myDataColumn]);
        }
      }
    }
  }
}

1.	Print DataSet out
2.	Finding Data
3.	How to perform a SELECT statement and store the returned rows in a DataSet object
4.	Populate a DataSet object using a SELECT statement
5.	Populate a DataSet object with multiple DataTable objects
6.	Use the Merge() method
7.	DataSet Delete
8.	For each row in DataSet, reference the column data by column name
9.	DataSet Read
10.	ReadXml
11.	how to write and read XML files
12.	Open the XML file and read into a DataSet
13.	Populate a DataSet object with a range of rows from a SELECT statement
14.	Using Datasets
15.	Using Multi Tabled Datasets
16.	Read data from DataSet
17.	Populate a DataSet object with multiple DataTable objects by changing the CommandText property of a DataAdapter object's SelectCommand
18.	Use DataViewManager to wrap DataSet

Populate a DataSet with multiple DataTable objects using multiple SELECT statements : DataSet « Database ADO.net « C# / C Sharp

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