Populate a DataSet object with multiple DataTable objects by changing the CommandText property of a DataAdapter object's SelectCommand


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

class MultipleDataTables2 {
    public static void Main() {
        SqlConnection mySqlConnection = new SqlConnection("server=localhost;database=Northwind;uid=sa;pwd=sa");

        SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
        mySqlCommand.CommandText = "SELECT TOP 2 ProductID, ProductName, UnitPrice FROM Products ORDER BY ProductID";
        SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
        mySqlDataAdapter.SelectCommand = mySqlCommand;
        DataSet myDataSet = new DataSet();
        mySqlConnection.Open();
        int numberOfRows = mySqlDataAdapter.Fill(myDataSet, "Products");
        Console.WriteLine("numberOfRows = " + numberOfRows);

        mySqlDataAdapter.SelectCommand.CommandText = "SELECT CustomerID, CompanyName FROM Customers WHERE CustomerID = 'ALFKI'";
        numberOfRows = mySqlDataAdapter.Fill(myDataSet, "Customers");
        Console.WriteLine("numberOfRows = " + numberOfRows);

        mySqlConnection.Close();

        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]);
                }
            }
        }
    }
}

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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.	Populate a DataSet with multiple DataTable objects using multiple SELECT statements
7.	Use the Merge() method
8.	DataSet Delete
9.	For each row in DataSet, reference the column data by column name
10.	DataSet Read
11.	ReadXml
12.	how to write and read XML files
13.	Open the XML file and read into a DataSet
14.	Populate a DataSet object with a range of rows from a SELECT statement
15.	Using Datasets
16.	Using Multi Tabled Datasets
17.	Read data from DataSet
18.	Use DataViewManager to wrap DataSet

Populate a DataSet object with multiple DataTable objects by changing the CommandText property of a DataAdapter object's SelectCommand : DataSet « Database ADO.net « C# / C Sharp

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