private void linkLabel2_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            addlib al = new addlib();

            al.Show();
            this.Hide();
        }
 private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
 {
     if (textBox1.Text == "admin" && textBox2.Text == "admin")
     {
         DialogResult dialogResult = MessageBox.Show("Add Librarian", "Edit changes", MessageBoxButtons.YesNo);
         if (dialogResult == DialogResult.Yes)
         {
             addlib al = new addlib();
             al.Show();
         }
         else if (dialogResult == DialogResult.No)
         {
         }
         else
         {
             MessageBox.Show("Something Went Wrong!!!");
         }
     }
     else
     {
         DialogResult dialogResult = MessageBox.Show("Add Books", "Edit changes", MessageBoxButtons.YesNo);
         if (dialogResult == DialogResult.Yes)
         {
             Addbook ab = new Addbook();
             ab.Show();
         }
         else if (dialogResult == DialogResult.No)
         {
         }
         else
         {
             MessageBox.Show("Something Went Wrong!!!");
         }
     }
 }