binding Navigator problem

Also refer

http://www.codeproject.com/Articles/15596/BindingSource-and-BindingNavigator-in-C-2-0

http://www.c-sharpcorner.com/UploadFile/718fc8/working-with-bindingnavigator-control/


Thanks
If this post helps you mark it as answer

App.config

 

           

     

 

 

 

Form1.cs

 

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 Insert_update_delete_navigate

{

    public partial class Form1 : Form

    {

        string ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["dsn"];

        OleDbCommand com;

        OleDbDataAdapter oledbda;

        string str;

        DataSet ds;

        byte flag;

        BindingManagerBase bm;

 

        public Form1()

        {

            InitializeComponent();

        }

 

        private void Form1_Load(object sender, EventArgs e)

        {

            OleDbConnection con = new OleDbConnection(ConnectionString);

            con.Open();

            str = "select * from student";

            com = new OleDbCommand(str, con);

            oledbda = new OleDbDataAdapter(com);

            ds = new DataSet();

            oledbda.Fill(ds, "student");

            textBox1.DataBindings.Add("Text", ds, "student.id");

            textBox2.DataBindings.Add("Text", ds, "student.name");

            bm = this.BindingContext[ds, "student"];

            con.Close();

            bindgrid();

        }

 

        private void bindgrid()

        {

            OleDbConnection con = new OleDbConnection(ConnectionString);

            con.Open();

            str = "select * from student";

            com = new OleDbCommand(str, con);

            oledbda = new OleDbDataAdapter(com);

            ds = new DataSet();

            oledbda.Fill(ds, "student");

            dataGridView1.DataMember = "student";

            dataGridView1.DataSource = ds;

            con.Close();

 

        }

 

        private void btn_first_Click(object sender, EventArgs e)

        {

            bm.Position = 0;

        }

 

        private void btn_next_Click(object sender, EventArgs e)

        {

            bm.Position += 1;

        }

 

        private void btn_previous_Click(object sender, EventArgs e)

        {

            bm.Position -= 1;

        }

 

        private void btn_last_Click(object sender, EventArgs e)

        {

            bm.Position = bm.Count - 1;

        }

 

        private void btn_add_Click(object sender, EventArgs e)

        {

            textBox1.Text = "";

            textBox2.Text = "";

            textBox1.Focus();

            flag = 1;

        }

 

        private void btn_modify_Click(object sender, EventArgs e)

        {

            flag = 2;

        }

 

        private void btn_save_Click(object sender, EventArgs e)

        {

            if (flag == 1)

            {

                OleDbConnection con = new OleDbConnection(ConnectionString);

                con.Open();

                str = "insert into student(id,name) values (@id,@name)";

                com = new OleDbCommand(str, con);

                com.Parameters.AddWithValue("@sid", textBox1.Text);

                com.Parameters.AddWithValue("@sname", textBox2.Text);

                com.ExecuteNonQuery();

                con.Close();

                MessageBox.Show("Records Successfuly Inserted");

                bindgrid();

            }

 

            if (flag == 2)

            {

                OleDbConnection con = new OleDbConnection(ConnectionString);

                con.Open();

                str = "update student set name='" + textBox2.Text.Trim() + "' where id='" + textBox1.Text.Trim() + "'";

                com = new OleDbCommand(str, con);

                com.ExecuteNonQuery();

                con.Close();

                MessageBox.Show("Records Successfuly Updated");

                bindgrid();

            }

        }

 

        private void btn_delete_Click(object sender, EventArgs e)

        {

 

            DialogResult result;

            result = MessageBox.Show("Are You sure want to Delete?", "Conformation", MessageBoxButtons.YesNo);

            if (result == System.Windows.Forms.DialogResult.Yes)

            {

                OleDbConnection con = new OleDbConnection(ConnectionString);

                str = "delete from student where id=@id";

                com = new OleDbCommand(str, con);

                com.Parameters.AddWithValue("@id", textBox1.Text);

                con.Open();

                com.ExecuteNonQuery();

                con.Close();

                MessageBox.Show("Records Successfuly Deleted");

                bindgrid();

               

            }

            else

            {

                MessageBox.Show("No action");

            }

            

        }

    }

}