c# - SQL Server 和 C# 的输出不同

Question

我认为我的编码有问题。我猜这不是按日期过滤。请帮忙

SQL 代码:

SELECT
   CONVERT(char(80), i.InvDate,3) AS InvDate,
   i.InvoiceNo,
   i.EmployerCode,
   i.TaxAmount + i.SubTotal AS Amount,
   '' AS Payment,
   pd.GivenName
FROM
   dbo.Invoice i
INNER JOIN 
   dbo.PatientDetails pd ON (pd.MedicalRecordID = i.MedicalRecordID)

C#代码:

SqlCommand objCmd = new SqlCommand("SELECT CONVERT(char(80), i.InvDate,3) AS InvDate, 
    i.InvoiceNo,
    i.EmployerCode,
    i.TaxAmount + i.SubTotal AS Amount,
    '' AS Payment,
    pd.GivenName 
FROM
    dbo.Invoice i 
INNER JOIN dbo.PatientDetails pd ON (pd.MedicalRecordID = i.MedicalRecordID) 
WHERE (InvDate >= CONVERT(datetime, '" + dtpFrom.Text + "', 105 )) 
    AND (InvDate <= CONVERT(datetime, '" + dtpTo.Text + "', 105))," , objConn);

这是我想要实现的:

这是我得到的:

在我被踢出这里之前。我会进行一些修改。

编辑:

日期时间采用 105 格式 (dd-mm-yyyy)

WHERE (InvDate >= CONVERT(datetime, '" + dtpFrom.Text + "', 105 )) 
AND (InvDate <= CONVERT(datetime, '" + dtpTo.Text + "', 105))

这应该是从一个特定的日期中选择的。 EG:从 2012 年 10 月 11 日到 2012 年 10 月 15 日。

即使没有 DateTimepicker，输出也不会显示“GivenName”

Answer 1

最好的方法是将您的输入格式化为 dd/MMM/yyyy 格式。它更好地帮助SqlServer 识别月份和日期。我强烈建议您在与 SqlServer 通信时使用 MMM 格式。

DateTime fromDate, toDate;
fromDate = DateTime.Parse(dtpFrom.Text);
toDate = DateTime.Parse(dtpTo.Text);

SqlCommand objCmd = new SqlCommand("SELECT CONVERT(char(80), i.InvDate,3) AS InvDate, 
i.InvoiceNo,
i.EmployerCode,
i.TaxAmount + i.SubTotal AS Amount,
'' AS Payment,
pd.GivenName 
FROM    dbo.Invoice i 
INNER JOIN dbo.PatientDetails pd ON (pd.MedicalRecordID = i.MedicalRecordID) 
WHERE datediff(d, '" + fromDate.ToString("dd/MMM/yyyy") + "', i.InvDate) >=0  
AND datediff(d, '" + toDate.ToString("dd/MMM/yyyy") + "', i.InvDate) <=0", objConn);

或者如果您有任何限制要执行上述操作，请使用 CONVERT() 转换输入

SqlCommand objCmd = new SqlCommand("SELECT CONVERT(char(80), i.InvDate,3) AS InvDate, 
i.InvoiceNo,
i.EmployerCode,
i.TaxAmount + i.SubTotal AS Amount,
'' AS Payment,
pd.GivenName 
FROM    dbo.Invoice i 
INNER JOIN dbo.PatientDetails pd ON (pd.MedicalRecordID = i.MedicalRecordID) 
WHERE datediff(d, CONVERT(datetime, '" + dtpFrom.Text + "', 105 ), i.InvDate) >=0  
AND datediff(d, CONVERT(datetime, '" + dtpTo.Text + "', 105 ), i.InvDate) <=0", objConn);