save and load for datagridview

//for save to file
if (dlgSave.ShowDialog() == DialogResult.OK)
            {

                //create the new file using the name of save dialog box
                FileStream fleProduction = new FileStream(dlgSave.FileName, FileMode.Create, FileAccess.Write, FileShare.Write);
                BinaryWriter bnrProduction = new BinaryWriter(fleProduction);

                //write each value in the file
                bnrProduction.Write(textBox1.Text);
                bnrProduction.Write(label1.Text);
}

//for load file
private void openToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (dlgOpen.ShowDialog() == DialogResult.OK)
            {
                FileStream fleProduction = new FileStream(this.dlgOpen.FileName, FileMode.Open, FileAccess.Read, FileShare.Read);
                BinaryReader bnrProduction = new BinaryReader(fleProduction);
               

                textBox1.Text = bnrProduction.ReadString();
                label1.Text = bnrProduction.ReadString();
}