public async Task <QueryResult <SystemOperation> > QueryByPage(int page, int pageSize)
{
QueryResult <SystemOperation> result = new QueryResult <SystemOperation>();
await DBTransactionHelper.SqlTransactionWorkAsync(DBTypes.SqlServer, true, false, _dbConnectionFactory.CreateReadForWhitelistPolicy(), async (conn, transaction) =>
{
SqlTransaction sqlTran = null;
if (transaction != null)
{
sqlTran = (SqlTransaction)transaction;
}
using (SqlCommand commond = new SqlCommand()
{
Connection = (SqlConnection)conn,
CommandType = CommandType.Text,
CommandText = string.Format(@"SET @currentpage = @page;
SELECT @count = COUNT(*)
FROM SystemOperation;
IF @pagesize * @page >= @count
BEGIN
SET @currentpage = @count / @pagesize;
IF @count % @pagesize <> 0
BEGIN
SET @currentpage = @currentpage + 1;
END;
IF @currentpage = 0
SET @currentpage = 1;
END;
ELSE IF @page < 1
BEGIN
SET @currentpage = 1;
END;
SELECT {0}
FROM SystemOperation
ORDER BY sequence OFFSET (@pagesize * (@currentpage - 1)) ROWS FETCH NEXT @pagesize ROWS ONLY;",
StoreHelper.GetSystemOperationSelectFields(string.Empty)),
Transaction = sqlTran
})
{
var parameter = new SqlParameter("@page", SqlDbType.Int)
{
Value = page
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@pagesize", SqlDbType.Int)
{
Value = pageSize
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@count", SqlDbType.Int)
{
Direction = ParameterDirection.Output
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@currentpage", SqlDbType.Int)
{
Direction = ParameterDirection.Output
};
commond.Parameters.Add(parameter);
commond.Prepare();
SqlDataReader reader = null;
using (reader = await commond.ExecuteReaderAsync())
{
while (await reader.ReadAsync())
{
var systemOperation = new SystemOperation();
StoreHelper.SetSystemOperationSelectFields(systemOperation, reader, string.Empty);
result.Results.Add(systemOperation);
}
reader.Close();
result.TotalCount = (int)commond.Parameters["@count"].Value;
result.CurrentPage = (int)commond.Parameters["@currentpage"].Value;
}
}
});
return(result);
}
public async Task <QueryResult <SystemOperation> > QueryByPage(string name, int page, int pageSize)
{
QueryResult <SystemOperation> result = new QueryResult <SystemOperation>();
await DBTransactionHelper.SqlTransactionWorkAsync(DBTypes.SqlServer, true, false, _dbConnectionFactory.CreateReadForWhitelistPolicy(), async (conn, transaction) =>
{
SqlTransaction sqlTran = null;
if (transaction != null)
{
sqlTran = (SqlTransaction)transaction;
}
using (SqlCommand commond = new SqlCommand()
{
Connection = (SqlConnection)conn,
CommandType = CommandType.Text,
CommandText = string.Format(@"set @currentpage=@page
select @count= count(*) from SystemOperation where [name] like @name
if @pagesize*@page>=@count
begin
set @currentpage= @count/@pagesize
if @count%@pagesize<>0
begin
set @currentpage=@currentpage+1
end
if @currentpage=0
set @currentpage=1
end
else if @page<1
begin
set @currentpage=1
end
select {0} from SystemOperation
where [name] like @name
order by sequence
offset (@pagesize * (@currentpage - 1)) rows
fetch next @pagesize rows only;" , StoreHelper.GetSystemOperationSelectFields(string.Empty)),
Transaction = sqlTran
})
{
var parameter = new SqlParameter("@page", SqlDbType.Int)
{
Value = page
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@pagesize", SqlDbType.Int)
{
Value = pageSize
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@name", SqlDbType.NVarChar, 100)
{
Value = $"{name.ToSqlLike()}%"
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@count", SqlDbType.Int)
{
Direction = ParameterDirection.Output
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@currentpage", SqlDbType.Int)
{
Direction = ParameterDirection.Output
};
commond.Parameters.Add(parameter);
commond.Prepare();
SqlDataReader reader = null;
using (reader = await commond.ExecuteReaderAsync())
{
while (await reader.ReadAsync())
{
var systemOperation = new SystemOperation();
StoreHelper.SetSystemOperationSelectFields(systemOperation, reader, string.Empty);
result.Results.Add(systemOperation);
}
reader.Close();
result.TotalCount = (int)commond.Parameters["@count"].Value;
result.CurrentPage = (int)commond.Parameters["@currentpage"].Value;
}
}
});
return(result);
}
public async Task <SystemOperation> QueryByName(string name, int status)
{
SystemOperation result = null;
await DBTransactionHelper.SqlTransactionWorkAsync(DBTypes.SqlServer, true, false, _dbConnectionFactory.CreateReadForWhitelistPolicy(), async (conn, transaction) =>
{
SqlTransaction sqlTran = null;
if (transaction != null)
{
sqlTran = (SqlTransaction)transaction;
}
using (SqlCommand commond = new SqlCommand()
{
Connection = (SqlConnection)conn,
CommandType = CommandType.Text,
CommandText = string.Format(@"select {0} from SystemOperation where [name]=@name and [status]=@status", StoreHelper.GetSystemOperationSelectFields(string.Empty)),
Transaction = sqlTran
})
{
var parameter = new SqlParameter("@name", SqlDbType.NVarChar, 500)
{
Value = name
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@status", SqlDbType.Int)
{
Value = status
};
commond.Parameters.Add(parameter);
commond.Prepare();
SqlDataReader reader = null;
using (reader = await commond.ExecuteReaderAsync())
{
if (await reader.ReadAsync())
{
result = new SystemOperation();
StoreHelper.SetSystemOperationSelectFields(result, reader, string.Empty);
}
reader.Close();
}
}
});
return(result);
}