// function for fetching data from database and showing in datagridview in window application and make a function

public void displayDataGridView()
{
SqlConnection con = new SqlConnection("server = MUNESH\\SQL2008R2;Database=data;UID=sa;Password=123;");
SqlCommand cmd = new SqlCommand("Select * from data1", con);
try
{
con.Open();
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = cmd;
DataTable dt = new DataTable();
da.Fill(dt);
dataGridView1.DataSource = dt;
con.Close();
}
catch (Exception ec)
{
MessageBox.Show(ec.Message);
}
}