Wednesday, 28 March 2012

insert and updating delete and select using oledb access database in .net

using System.Data.OleDb;

public partial class _Default : System.Web.UI.Page
{
    OleDbDataAdapter da;
    DataSet ds;
   
    protected void Insert_Click(object sender, EventArgs e)
    {
OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\\Learning2\\App_Data\\tahir.accdb;Persist Security Info=False;");
        OleDbCommand comm = new OleDbCommand("INSERT INTO test VALUES(@roll_no, @st_name, @st_course)", conn);
        comm.Parameters.AddWithValue("@roll_no", TextBox1.Text);
        comm.Parameters.AddWithValue("@st_name", TextBox2.Text);
        comm.Parameters.AddWithValue("@st_course", TextBox3.Text);
        //ds = new DataSet();
        //da = new OleDbDataAdapter(comm);
        //da.Fill(ds);
        conn.Open();
        comm.ExecuteNonQuery();
        conn.Close();
    }

    protected void Delete_Click(object sender, EventArgs e)
    {
    OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\\Learning2\\App_Data\\tahir.accdb;Persist Security Info=False;");
    OleDbCommand comm = new OleDbCommand("delete * from test where roll_no=@rollno ", conn);
    comm.Parameters.AddWithValue("@rollno", TextBox1.Text);
    conn.Open();
    comm.ExecuteNonQuery();
      
    }
    protected void Update_Click(object sender, EventArgs e)
    {
        OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\\Learning2\\App_Data\\tahir.accdb;Persist Security Info=False;");
        OleDbCommand comm = new OleDbCommand("update test set st_name='Tahir' where roll_no=@rollno ", conn);
        comm.Parameters.AddWithValue("@rollno", TextBox1.Text);
        conn.Open();
        comm.ExecuteNonQuery();
      }
    protected void Display_Click(object sender, EventArgs e)
    {
        OleDbConnection conn = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\\Learning2\\App_Data\\tahir.accdb;Persist Security Info=False;");
        OleDbCommand comm = new OleDbCommand("select * from test where roll_no=@rollno ", conn);
        comm.Parameters.AddWithValue("@rollno",TextBox1.Text);
        da = new OleDbDataAdapter(comm);
        ds = new DataSet();
        da.Fill(ds);
       // GridView1.DataSource = ds;
       // GridView1.DataBind();
       // GridView1.Visible = true;
         TextBox2.Text = ds.Tables[0].Rows[0][1].ToString();
         TextBox3.Text = ds.Tables[0].Rows[0][2].ToString();
         da.Fill(ds);
        
       
    }
}

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