BlogEngine.Core.Providers.DbBlogProvider.DeleteCategory C# (CSharp) Method

        public override void DeleteCategory(Category category)
        {
            var categories = Category.Categories;
            categories.Remove(category);

            using (var conn = this.CreateConnection())
            {
                if (conn.HasConnection)
                {
                    var sqlQuery = string.Format("DELETE FROM {0}PostCategory WHERE BlogID = {1}blogid AND CategoryID = {1}catid", this.tablePrefix, this.parmPrefix);

                    using (var cmd = conn.CreateTextCommand(sqlQuery))
                    {
                        cmd.Parameters.Add(conn.CreateParameter(FormatParamName("blogid"), Blog.CurrentInstance.Id.ToString()));
                        cmd.Parameters.Add(conn.CreateParameter(FormatParamName("catid"), category.Id.ToString()));
                        cmd.ExecuteNonQuery();
                    }

                    sqlQuery = string.Format("DELETE FROM {0}Categories WHERE BlogID = {1}blogid AND CategoryID = {1}catid", this.tablePrefix, this.parmPrefix);

                    using (var cmd = conn.CreateTextCommand(sqlQuery))
                    {
                        cmd.Parameters.Add(conn.CreateParameter(FormatParamName("blogid"), Blog.CurrentInstance.Id.ToString()));
                        cmd.Parameters.Add(conn.CreateParameter(FormatParamName("catid"), category.Id.ToString()));
                        cmd.ExecuteNonQuery();
                    }
                }
            }
        }