好吧,我对这一切都不熟悉,我正在努力在 Windows 窗体应用程序中插入 TextBox
值(用户输入)并将这些值存储到 Oracle 数据库表中。
C#代码:
string oradb = "DATA SOURCE = larry.uopnet.plymouth.ac.uk:1521/orcl.fost.plymouth.ac.uk;PERSIST SECURITY INFO = True;USER ID = xxxxxxxxxx;password = xxxxxxxxx";
OracleConnection con = new OracleConnection(oradb);
con.Open();
OracleCommand cmd = new OracleCommand();
cmd.Connection = con;
cmd.CommandText = "Insert into USER.Client VALUES (txtBoxClientName, txtBoxClientCity, txtBoxClientCountry, txtBoxClientNumber, txtBoxClientURL, comboClientStatus)";
int rowsUpdated = cmd.ExecuteNonQuery();
if (rowsUpdated == 0)
MessageBox.Show("Please fill in required fields");
else
MessageBox.Show("Client has been added");
con.Dispose();
此错误出现在 int rowsUpdated = cmd.ExecuteNonQuery();
行 - Oracle.DataAccess 中发生类型为 Oracle.DataAccess.Client.OracleException
的未处理异常.dll
Oracle 中的触发代码:
create or replace TRIGGER trg_client_ClientID
BEFORE INSERT ON client FOR EACH ROW
BEGIN
:NEW.ClientID := seq_client_ClientID.nextval;
END;
最佳答案
借助添加 OracleException 和 ArgumentException 以及使用 Elkhan 的参数代码,我设法修复了它 - 这是我修改后的工作代码:
private void btnClientSave_Click(object sender, EventArgs e)
{
string oradb = "DATA SOURCE = larry.uopnet.plymouth.ac.uk:1521/orcl.fost.plymouth.ac.uk;PERSIST SECURITY INFO = True;USER ID = xxxxxxxxx;password = xxxxxxxx";
string insertquery = "Insert into Client VALUES (:1, :2, :3, :4, :5, :6, :7)";
OracleConnection con = new OracleConnection(oradb);
con.Open();
OracleCommand cmd = new OracleCommand();
cmd.Connection = con;
cmd.CommandText = insertquery;
try
{
cmd.Parameters.Add(new OracleParameter("1", OracleDbType.Decimal, ParameterDirection.ReturnValue));
cmd.Parameters.Add(new OracleParameter("2", OracleDbType.Varchar2, txtBoxClientName.Text, ParameterDirection.Input));
cmd.Parameters.Add(new OracleParameter("3", OracleDbType.Varchar2, txtBoxClientCity.Text, ParameterDirection.Input));
cmd.Parameters.Add(new OracleParameter("4", OracleDbType.Varchar2, txtBoxClientCountry.Text, ParameterDirection.Input));
cmd.Parameters.Add(new OracleParameter("5", OracleDbType.Varchar2, txtBoxClientNumber.Text, ParameterDirection.Input));
cmd.Parameters.Add(new OracleParameter("6", OracleDbType.Varchar2, txtBoxClientURL.Text, ParameterDirection.Input));
cmd.Parameters.Add(new OracleParameter("7", OracleDbType.Varchar2, comboClientStatus.Text, ParameterDirection.Input));
cmd.ExecuteNonQuery();
MessageBox.Show("Client has been added");
con.Close();
Close();
}
catch (OracleException e1)
{
MessageBox.Show("Error: " + e1.Message);
}
catch (ArgumentException e2)
{
MessageBox.Show("Error: " + e2.Message);
}
finally
{
cmd.Dispose();
con.Dispose();
}
关于c# - 如何将 C# 中的文本框值插入到 Oracle 数据库中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43106359/