[英]How to insert text box values from C# into Oracle Database
好吧,我是所有這一切的新手,並且正在努力在Windows窗體應用程序中插入TextBox
值(用戶輸入)並將它們存儲到Oracle數據庫表中。
C#代碼:
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();
此錯誤出現在int rowsUpdated = cmd.ExecuteNonQuery();
line - Oracle.DataAccess.Client.OracleException
發生Oracle.DataAccess.Client.OracleException類型的未處理異常
Oracle中的觸發器代碼:
create or replace TRIGGER trg_client_ClientID
BEFORE INSERT ON client FOR EACH ROW
BEGIN
:NEW.ClientID := seq_client_ClientID.nextval;
END;
我已經設法通過添加OracleException和ArgumentException並使用來自Elkhan的參數代碼來修復它 - 這是我修改后的工作代碼:
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();
}
像那樣:
cmd.CommandText = "Insert into USER.Client VALUES (:param_txtBoxClientName, :param_txtBoxClientCity, :param_txtBoxClientCountry, :param_txtBoxClientNumber, :param_txtBoxClientURL, :param_comboClientStatus)";
cmd.Parameters.Add(new OracleParameter("param_txtBoxClientName", OracleDbType.Varchar2, txtBoxClientName.Text, ParameterDirection.Input));
cmd.Parameters.Add(new OracleParameter("param_txtBoxClientCity", OracleDbType.Varchar2, txtBoxClientCity.Text, ParameterDirection.Input));
cmd.Parameters.Add(new OracleParameter("param_txtBoxClientNumber", OracleDbType.Varchar2, txtBoxClientNumber.Text, ParameterDirection.Input));
cmd.Parameters.Add(new OracleParameter("param_txtBoxClientURL", OracleDbType.Varchar2, txtBoxClientURL.Text, ParameterDirection.Input));
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