c# - 如何从 Asp.Net/C# Codebehind 中的单个 SQL Select 语句返回多个字符串变量？

Question

例如，使用以下代码。

SELECT COUNT(1) as 'ClientActive', 

(SELECT COUNT(1) FROM t1 AS t2 WHERE t2.fieldname = 'A') AS TotalA,

(SELECT COUNT(1) FROM t1 AS t2 WHERE t2.fieldname = 'B') AS TotalB,
(SELECT COUNT(1) FROM t1 AS t2 WHERE t2.fieldname = 'C') AS TotalC,
(SELECT COUNT(1) FROM t1 AS t2 WHERE t2.fieldname = 'D') AS TotalD
 FROM t1 WHERE clientstatus='active'

我想要这样的回报：

    lblString1.Text = TotalA;
    lblString2.Text = TotalB;
    etc..

有人可以生成 C# 代码来执行此操作吗？谢谢你。

Answer 1

使用 DataSet 然后循环遍历它，或者只获取第一行并将每一行值分配给标签（假设您知道如何填充数据集）：

lblString1.Text = row["ClientActive"].toString(); lblString2.Text = row["TotalB"].toString(); etc.