在asp.net中显示两个日期之间的日期答案

【问题标题】：Display dates between two dates in asp.net在asp.net中显示两个日期之间的日期
【发布时间】：2016-03-21 06:05:43
【问题描述】：

我的 aspx 中有两个日历，我想在这些日历的选定日期之间显示记录。我的“TeklifTarih”数据库属性是日期类型属性。这是我的aspx：

<asp:Calendar ID="Calendar1" runat="server"></asp:Calendar><br />
<asp:Calendar ID="Calendar2" runat="server"></asp:Calendar><br/>
<asp:Button ID="btnClendar" runat="server" Text="İstatistikleri Filtrele" OnClick="btnClendar_Click"/>

还有我的 onclick 方法：

protected void btnClendar_Click(object sender, EventArgs e)
    {
        string baslangicTarihi = Calendar1.SelectedDate.ToString();
        string bitisTarihi = Calendar2.SelectedDate.ToString();
        EntityDataSourcePersonel.CommandText =
            "SELECT COUNT(TeklifTable.TeklifHazirlayan) AS Basari, EmployeeTable.Name, EmployeeTable.Surname, SUM(TeklifTable.TeklifTutar) AS ToplamSatis FROM EmployeeTable JOIN TeklifTable ON TeklifTable.TeklifHazirlayan = EmployeeTable.EmployeeId WHERE TeklifTable.TeklifTarih >= " + baslangicTarihi + " AND TeklifTable.TeklifTarih <= " + bitisTarihi + " GROUP BY EmployeeTable.Name,EmployeeTable.Surname";
    }

我需要使用此命令文本显示数据，当我删除查询的 where 命令时它可以工作，但我需要使用这两个日期进行过滤。

【问题讨论】：

检查日期时间的输出格式。如果数据库需要不同的格式，则查询失败。例如，您的字符串格式为“dd.MM.yyyy”，但数据库日期格式为“MM/dd/yyyy”。
您使用的是哪个 dbms？
感谢您的回答。来自程序的日期格式类似于“01.12.2015 00:00:00”，而来自 db 的日期格式类似于“2015-12-15”。如何将 '01.12.2015 00:00:00' 转换为 '01-12-2015' ？ @萨米
感谢您的回复。我正在使用 MSSQL @jarlh

标签： c# sql asp.net sql-server date

【解决方案1】：

您在创建 sql 语句时错过了单引号 (')，您的查询应该如下所示：-

EntityDataSourcePersonel.CommandText =
"SELECT COUNT(TeklifTable.TeklifHazirlayan) AS Basari, EmployeeTable.Name, 
 EmployeeTable.Surname, SUM(TeklifTable.TeklifTutar) AS ToplamSatis FROM 
 EmployeeTable JOIN TeklifTable ON TeklifTable.TeklifHazirlayan = EmployeeTable.EmployeeId 
 WHERE TeklifTable.TeklifTarih >= '" + baslangicTarihi + "' 
 AND TeklifTable.TeklifTarih <= '" + bitisTarihi + "' 
 GROUP BY EmployeeTable.Name,EmployeeTable.Surname";

【讨论】：

【解决方案2】：

结合其他答案指出您缺少引号和日期时间格式，以下应该可以工作：（虽然未经测试）

EntityDataSourcePersonel.CommandText =
"SELECT COUNT(TeklifTable.TeklifHazirlayan) AS Basari, EmployeeTable.Name, 
EmployeeTable.Surname, SUM(TeklifTable.TeklifTutar) AS ToplamSatis FROM 
EmployeeTable JOIN TeklifTable ON TeklifTable.TeklifHazirlayan = EmployeeTable.EmployeeId 
WHERE TeklifTable.TeklifTarih >= '" + baslangicTarihi.ToString("yyyy-MM-dd") + "' 
AND TeklifTable.TeklifTarih <= '" + bitisTarihi.ToString("yyyy-MM-dd") + "' 
GROUP BY EmployeeTable.Name,EmployeeTable.Surname";

还要考虑 Tim 关于参数化查询的观点，您应该尽可能使用它们。

【讨论】：

【解决方案3】：

我必须承认我不熟悉EntityDataSource 控件。但根据what i've read，您也可以使用参数化查询。就这样吧：

String sql = @"SELECT Count(TeklifTable.TeklifHazirlayan) AS Basari, 
       EmployeeTable.NAME, 
       EmployeeTable.Surname, 
       Sum(TeklifTable.TeklifTutar)        AS ToplamSatis 
FROM   EmployeeTable 
       JOIN TeklifTable 
         ON TeklifTable.TeklifHazirlayan = EmployeeTable.EmployeeId 
GROUP  BY EmployeeTable.NAME, 
          EmployeeTable.Surname";
EntityDataSourcePersonel.CommandText = sql;
String whereClause = @"TeklifTable.TeklifTarih >= @baslangicTarihi 
                   AND TeklifTable.TeklifTarih <= @bitisTarihi";
EntityDataSourcePersonel.Where = whereClause;
EntityDataSourcePersonel.WhereParameters.Add(new Parameter("baslangicTarihi", TypeCode.DateTime,  Calendar1.SelectedDate));
EntityDataSourcePersonel.WhereParameters.Add(new Parameter("bitisTarihi", TypeCode.DateTime,  Calendar2.SelectedDate));

【讨论】：