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"조건 식에 데이터 형식이 일치하지 않습니다." 한 데이터베이스에서이 코드를 실행할 때 오류가 발생하지만 다른 데이터베이스에서 완벽하게 작동합니다. 관련 테이블을 다른 데이터베이스로 복사하고 그 데이터베이스에서 실행하면 프로그램이 다시 실패합니다!"조건 식의 데이터 형식이 일치하지 않습니다." 오류
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace Project
{
public partial class Login : Form
{
public Login()
{
InitializeComponent();
}
private void Login_Load(object sender, EventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
}
private void LoginButton_Click(object sender, EventArgs e)
{
DAL conn = new DAL(@"|DataDirectory|\ProjectDB.accdb");
DataSet ds = conn.GetDataSet("Select * from Secretarys where SecretaryUsername = "+UserNameBox.Text.ToString());
if (ds.Tables[0].Rows[0][0].ToString().Equals(PassowrdBox.Text))
MessageBox.Show("asd","sdfa");
}
}
}
"DAL"클래스를 사용하고 있습니다. 은 OleDb와
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Data.OleDb;
/// <summary>
/// Summary description for DAL
/// </summary>
public class DAL
{
private string dbPath;
private OleDbConnection conn;
private OleDbCommand command;
private OleDbDataAdapter adapter;
private string stQuery;
public DAL(string dbPath)
{
this.dbPath = dbPath;
string ConnectionString = string.Format(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0}", this.dbPath);
conn = new OleDbConnection(ConnectionString);
command = new OleDbCommand(stQuery, conn);
adapter = new OleDbDataAdapter(command);
}
public DataSet GetDataSet(string strSql)
{
DataSet ds = new DataSet();
command.CommandText = strSql;
adapter.SelectCommand = command;
adapter.Fill(ds);
return ds;
}
public bool InsertRow(string sqlInsert)
{
int rowsEffected;
command.CommandText = sqlInsert;
conn.Open();
rowsEffected = command.ExecuteNonQuery();
conn.Close();
return (rowsEffected > 0);
}
public string GetData(string strSql)//שולפת נתונים מהטבלת המשתמשים שנמצאת באקסס
{
string st = "";
DataSet ds = new DataSet();
command.CommandText = strSql;
conn.Open();
st = command.ExecuteScalar().ToString();
conn.Close();
return (st);
}
public void UpdateRow(string sqlInsert)//הוספת נתונים לטבלת החברים באקסס
{
command.CommandText = sqlInsert;
conn.Open();
command.ExecuteNonQuery();
conn.Close();
}
public void DeleteDataSet(DataSet ds)
{
OleDbCommandBuilder builder = new OleDbCommandBuilder(adapter);
adapter.DeleteCommand = builder.GetDeleteCommand();
conn.Open();
adapter.Update(ds);
conn.Close();
}
}