Merge Case 2: Same Table Structures,No Primary Key

Merge Case 2: Same Table Structures,No Primary Key

In the strongly typed DataSet, Table0 can be used as a sample table that has no primary keys

defined on it.

2)Binding the  student  datasource in table1 and table2

3)write the code

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Data.OleDb; namespace WindowsFormsApplication14 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { // TODO: This line of code loads data into the 'studentDataSet.student2' table. You can move, or remove it, as needed. this.student2TableAdapter.Fill(this.studentDataSet.student2); // TODO: This line of code loads data into the 'studentDataSet.std1' table. You can move, or remove it, as needed. this.std1TableAdapter.Fill(this.studentDataSet.std1); } private void button1_Click(object sender, EventArgs e) { OleDbConnection con = new OleDbConnection("Provider=Microsoft.Jet.OLEDB. 4.0;Data Source=F:\\student.mdb"); OleDbDataAdapter ad = new OleDbDataAdapter("select * from std1", con); DataTable tb1 = new DataTable(); ad.Fill(tb1); //dataGridView4.Visible = true; //dataGridView4.DataSource = tb1; OleDbDataAdapter ad1 = new OleDbDataAdapter("select * from student2", con); DataTable tb2 = new DataTable(); ad1.Fill(tb2); tb2.Merge(tb1); dataGridView3.DataSource = tb2; dataGridView3.Visible = true; dataGridView1.Visible = false; dataGridView2.Visible = false; label1.Visible = false; label2.Visible = false; } } }

4)Run thr program

5)click the merge button

                                                        Data after Merge