protected void grdBlog_RowCommand(object sender, GridViewCommandEventArgs e)
 {
     try
     {
         if (e.CommandName.Equals("Delete"))
         {
             Blog blog = new Blog();
             int index = Convert.ToInt32(e.CommandArgument);
             GridViewRow row = grdBlog.Rows[index];
             HiddenField hdnField = (HiddenField)row.FindControl("hdnGUID");
             blog.deleteBlogByBlogId(new Guid(hdnField.Value.ToString()));
             bindBlogs();
         }
         if (e.CommandName.Equals("Edit"))
         {
             int index = Convert.ToInt32(e.CommandArgument);
             GridViewRow row = grdBlog.Rows[index];
             HiddenField hdnField = (HiddenField)row.FindControl("hdnGUID");
             Response.Redirect("ManageBlog.aspx?guid=" + new Guid(hdnField.Value.ToString()));
         }
         if (e.CommandName.Equals("ManageAnswer"))
         {
             int index = Convert.ToInt32(e.CommandArgument);
             GridViewRow row = grdBlog.Rows[index];
             HiddenField hdnField = (HiddenField)row.FindControl("hdnGUID");
             Response.Redirect("ShowAllAnswers.aspx?blogId=" + new Guid(hdnField.Value.ToString()));
         }
     }
     catch (Exception ex)
     {
         throw ex;
     }
 }