converting object to string has error
SqlConnection scn = new SqlConnection(ClsPublic.GetConnectionString());
                   SqlCommand scm = new SqlCommand("SELECT Name FROM Table WHERE (Blogger = @Blogger)", scn);
                   scm.Parameters.AddWithValue("@Blogger", lblBloger.Text);
                   scn.Open();
                   MyLabel.Text = scm.ExecuteScalar().ToString();
                   scn.Close();

lblLastNo.Text = scm.ExecuteScalar().ToString();

object Blogger= "";
if (Blogger.ToString() != string.Empty)
{
    ....
}

var result = scm.ExecuteScalar();
MyLabel.Text = result == null ? '' : result.ToString();

object blogger= "";
if (blogger.ToString() != string.Empty)
{
    ....
}

string str=blogger.toString();
    if (String.IsNullOrEmpty(str))
            //do something
   else
     //do other part