C# 我想在DB中插入一条记录,然后需要返回一行
我想在DB中插入一条记录,然后需要返回一行。我创建了这个查询,但是如何在.csc代码中使用它呢 这是我的问题C# 我想在DB中插入一条记录,然后需要返回一行,c#,sql,sql-server-2008,return,code-behind,C#,Sql,Sql Server 2008,Return,Code Behind,我想在DB中插入一条记录,然后需要返回一行。我创建了这个查询,但是如何在.csc代码中使用它呢 这是我的问题 @ledgerId numeric(18,0) , @voucherNo varchar(MAX) , @invoiceNo varchar(MAX) , @date datetime , @month datetime , @totalAmount decimal(18,5) , @narration varchar(MAX) , -- @extraDate dateti
@ledgerId numeric(18,0) ,
@voucherNo varchar(MAX) ,
@invoiceNo varchar(MAX) ,
@date datetime ,
@month datetime ,
@totalAmount decimal(18,5) ,
@narration varchar(MAX) ,
-- @extraDate datetime ,
@extra1 varchar(MAX) ,
@extra2 varchar(MAX) ,
@suffixPrefixId numeric(18,0) ,
@voucherTypeId numeric(18,0)
AS
DECLARE @UpdatedVoucherNo DECIMAL(18,0)
SET @UpdatedVoucherNo = (SELECT ISNULL( MAX(CAST (voucherNo AS NUMERIC(18,0))),0) + 1
FROM tbl_SalaryVoucherMaster
WHERE voucherTypeId=@voucherTypeId)
IF (@UpdatedVoucherNo = @voucherNo )
INSERT INTO tbl_SalaryVoucherMaster
(
/*salaryVoucherMasterId,*/
ledgerId,
voucherNo,
invoiceNo,
date,
month,
totalAmount,
narration,
extraDate,
extra1,
extra2,
suffixPrefixId,
voucherTypeId )
VALUES
(
/*@salaryVoucherMasterId, */
@ledgerId,
@voucherNo,
@invoiceNo,
@date,
@month,
@totalAmount,
@narration,
getDate(),
@extra1,
@extra2,
@suffixPrefixId,
@voucherTypeId)
SELECT SCOPE_IDENTITY() AS [Identity],0 AS [UpdatedVoucherNo]
Command.ExecuteNonQuery;是您需要的,它返回插入和更新数据时受影响的行数
下面是一个使用它的示例
string connetionString = null;
SqlConnection cnn ;
SqlCommand cmd ;
string sql = null;
connetionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=UserName;Password=Password";
sql = "Your SQL Statemnt Here";
cnn = new SqlConnection(connetionString);
cnn.Open();
cmd = new SqlCommand(sql, cnn);
int rowsAffected = cmd.ExecuteNonQuery();
if (rowsAffected > 0)
{
//do anything
}
cmd.Dispose();
cnn.Close();
MessageBox.Show (" ExecuteNonQuery in SqlCommand executed !!");
更多信息一种方法是将@voucheno修改为输出参数,并向查询中添加新的输出参数以返回SCOPE_IDENTITY的值 并修改最后一条SELECT语句以设置@ScopeIdentity参数的值
SELECT @ScopeIdentity = SCOPE_IDENTITY()
然后使用SqlCommand.ExecuteNonQuery执行查询,完成后,从输出参数中读取值
using (SqlCommand command = new SqlCommand(connection, commandText))
{
int rowsAffected = command.ExecuteNonQuery();
if (rowsAffected > 0)
{
var voucherNo = (string)command.Parameters["@voucherNo].Value;
var identity = (decimal)command.Parameters["@ScopeIdentity"].Value;
}
}
你知道答案吗?不,我只想在表中插入一个数据,需要返回select语句中的列。首先我想插入,然后我需要在select语句中获取列的值。我得到了查询,但我想知道如何在代码中实现它。对于插入,我需要ExecuteOnQuery。。对于返回一行,我使用了DataAdapter,我想同时使用它。。但是它不起作用。什么意思,返回列?是指插入的数据吗?然后使用Select语句和SqlDataReader
using (SqlCommand command = new SqlCommand(connection, commandText))
{
int rowsAffected = command.ExecuteNonQuery();
if (rowsAffected > 0)
{
var voucherNo = (string)command.Parameters["@voucherNo].Value;
var identity = (decimal)command.Parameters["@ScopeIdentity"].Value;
}
}