在一個asp.net圖表中的C＃2數據集

Question

我有兩張表，我想在一張圖表，StockIssued和StockOrdered上顯示。我有顯示，每月，每年的費用爲兩個表如下SELECT語句

SELECT YEAR(IssueDate) AS 'Year', MONTH(IssueDate) AS 'Month', SUM(TotalCost) AS 'TotalCostIssue' 
FROM IssueStock 
GROUP BY YEAR(IssueDate), MONTH(IssueDate) 
order by 'Year', 'Month' 

SELECT YEAR(order_date) AS 'Year', MONTH(order_date) AS 'Month', SUM(cost) AS 'TotalCostOrder' 
FROM Orders 
GROUP BY YEAR(order_date), MONTH(order_date) 
order by 'Year', 'Month' 

股票發行
年月TOTALCOST
2010 --- 1 --- 1500
2010 - 2 - - 1400
..........

股票有序
年月TOTALCOST
2010 --- 1 --- 1600
2010 --- 2 --- 1700
...........

如何在同一圖表上顯示每個月的這些費用？

C＃代碼

string connectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; 
     SqlConnection conn = new SqlConnection(connectionString); 

     string SelectQuery1 = "SELECT YEAR(IssueDate) AS 'Year', MONTH(IssueDate) AS 'Month', SUM(TotalCost) AS 'TotalCost' " + 
      "FROM IssueStock WHERE YEAR(IssueDate) = " + year + " GROUP BY YEAR(IssueDate), MONTH(IssueDate) order by 'Year', 'Month'"; 

     SqlCommand myCommand = new SqlCommand(SelectQuery1, conn); 

     myCommand.Connection.Open(); 

     SqlDataAdapter myDataAdapter = new SqlDataAdapter(); 
     myDataAdapter.SelectCommand = myCommand; 

     DataSet myDataSet = new DataSet(); 

     myDataAdapter.Fill(myDataSet, "Query"); 

     Chart1.DataSource = myDataSet; 
     Chart1.Series["Series1"].XValueMember = "Month"; 
     Chart1.Series["Series1"].YValueMembers = "TotalCostIssue"; 

     Chart1.DataBind(); 

     myCommand.Connection.Close(); 

Answer 1

至於你的兩個表具有相同的結構。您也可以在SQL命令中使用UNION ALL子句。這不是最好的解決方案，但你會得到結果。

string SelectQuery1 = "SELECT YEAR(IssueDate) AS 'Year', MONTH(IssueDate) AS 'Month', SUM(TotalCost) AS 'TotalCost' " + 
     "FROM IssueStock WHERE YEAR(IssueDate) = " + year ; 
SelectQuery1 += " UNION ALL SELECT YEAR(IssueDate) AS 'Year', MONTH(IssueDate) AS 'Month', SUM(TotalCost) AS 'TotalCost' " + 
     "FROM Orders WHERE YEAR(IssueDate) = " + year + " GROUP BY YEAR(IssueDate), MONTH(IssueDate) order by 'Year', 'Month'";