[英]system.data.sqlclient.sqlException on ExecuteNonQuery()
我正在尝试使用此方法在我的诊所管理项目中将新患者添加到我的数据库中:
public void create_Patient()
{
SqlCommand c = new SqlCommand();
c.CommandText = "EXECUTE SP_add_patient @ownerID, @ownername, @petname, @animaltype, @animalbirthyear, @owneradress, @ownerphone";
c.Parameters.AddWithValue("@ownerID", this.ownerID.ToString());
c.Parameters.AddWithValue("@ownername", this.ownername.ToString());
c.Parameters.AddWithValue("@petname", this.petname.ToString());
c.Parameters.AddWithValue("@animaltype", this.animalType.ToString());
c.Parameters.AddWithValue("@animalbirthyear", this.animalBirthYear.ToString());
c.Parameters.AddWithValue("@owneradress", this.ownerAddress.ToString());
c.Parameters.AddWithValue("@ownerphone", this.ownerPhone.ToString());
c.Parameters.AddWithValue("@owneremail", this.ownerEmail.ToString());
SQL_CON SC = new SQL_CON();
SC.execute_non_query(c);
}
我正在使用存储过程:
CREATE PROCEDURE dbo.SP_add_patient
@ownerID varchar(100)
, @ownername varchar(100)
, @petname varchar(100)
, @animaltype varchar(100)
, @animalbirthyear int
, @owneradress varchar(100)
, @ownerphone varchar(100)
, @owneremail varchar(100) AS
INSERT INTO dbo.patientValues (@ownerID
,@ownername
,@petname
,@animaltype
,@animalbirthyear
,@owneradress
,@ownerphone
,@owneremail);
在execute_non_query(c)
我使用ExecuteNonQuery()
:
public void execute_non_query(SqlCommand cmd)
{
try
{
// open a connection object
this.conn.Open();
cmd.Connection = conn;
cmd.ExecuteNonQuery();
}
catch (Exception ex)
{
MessageBox.Show("error", MessageBoxButtons.OK);
}
finally
{
if (conn != null)
{
conn.Close();
}
}
}
当我到达ExecuteNonQuery()
时,出现异常:
system.data.sqlclient.sqlException 异常。
我寻找解决方案并尝试更改身份规范,但主键类型是varchar
,我无法将其更改为数字类型(主键必须是名称)。
我该如何解决?
你这里有一个错误:
catch (Exception ex)
{
MessageBox.Show("error", MessageBoxButtons.OK);
}
应该是这样的:
catch (Exception ex)
{
MessageBox.Show(ex.Message, MessageBoxButtons.OK);
}
您可以尝试如下,
try
{
SqlTransaction trx = null;
connection = new SqlConnection(connectionString);
connection.Open();
trx = connection.BeginTransaction();
SqlCommand c = new SqlCommand("[dbo].[SP_add_patient]", connection, trx);
c.CommandType = CommandType.StoredProcedure;
c.Parameters.AddWithValue(""@ownerID", this.ownerID.ToString());
c.ExecuteNonQuery();
trx.Commit();
connection.Close();
}
catch (SqlException e)
{
}
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