ADO.NET 를 이용하여 MDB 파일을 컨트롤 하는 예제 입니다.
데이터를 추가하고, 수정하고, 제거하는 방법을 알아보겠습니다.
전체소스WATMDB.zip
준비하기
OleDb 네임스페이스를 추가합니다.
using System.Data.OleDb;
string strDBFileFullName = (System.Environment.CurrentDirectory) + “students.mdb“;
DataTable m_dtStudent = new DataTable();
OleDbDataAdapter m_daDataAdapter;OleDbConnection conn = new OleDbConnection();
conn.ConnectionString = @”Provider=Microsoft.Jet.OLEDB.4.0;Data Source=” + strDBFileFullName;
conn.Open(); m_daDataAdapter = new OleDbDataAdapter(“Select * From student “, conn);
OleDbCommandBuilder m_cbCommandBuilder = new OleDbCommandBuilder(m_daDataAdapter); m_daDataAdapter.Fill(m_dtStudent);
데이터 추가
Add 메소드를 이용하여 데이터를 추가합니다.
private void btnNew_Click(object sender, EventArgs e)
{
DataRow drNew = m_dtStudent.NewRow();
drNew[“NAME”] = txtName.Text;
drNew[“MATH”] = Convert.ToInt32(txtMath.Text); m_dtStudent.Rows.Add(drNew);
m_daDataAdapter.Update(m_dtStudent); RefreshStudentView();
}
데이터 수정
private void btnModify_Click(object sender, EventArgs e)
{
if (lvwStudent.SelectedItems.Count < 1) return;
int iSelID = Convert.ToInt32(lvwStudent.SelectedItems[0].SubItems[0].Text); m_dtStudent.Rows[iSelID][“NAME”] = txtName.Text;
m_dtStudent.Rows[iSelID][“MATH”] = Convert.ToInt32(txtMath.Text);
m_daDataAdapter.Update(m_dtStudent); RefreshStudentView();
}
데이터 제거
Delete 메소드를 이용하여 데이터를 제거합니다.
private void btnRemove_Click(object sender, EventArgs e)
{
if (lvwStudent.SelectedItems.Count < 1) return;
int iSelID = Convert.ToInt32(lvwStudent.SelectedItems[0].SubItems[0].Text); m_dtStudent.Rows[iSelID].Delete();
m_daDataAdapter.Update(m_dtStudent);
RefreshStudentView();
}