検索したレコードを更新できるフォームを作成しようとしています

Question

アクセスデータベースのレコードを検索してアーカイブを選択できるフォームを作成しましたが、更新スクリプトを取得できないようです上記のクエリで返されたレコードを実際に更新します。

誰かが助けることができますか？

おかげ

private void button2_Click(object sender, EventArgs e) 
    { 
     System.Data.OleDb.OleDbConnection conn = new 
     System.Data.OleDb.OleDbConnection(); 
     conn.ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data  Source=BoilerSvc_be.mdb"; 
     try 
     { 
      conn.Open(); 
      OleDbCommand command = new OleDbCommand("SELECT * FROM Contacts WHERE Archived = 0 AND (Surname = '" + textBox3.Text + "' OR Initial = '" + textBox3.Text + "' OR [Post Town] = '" + textBox3.Text + "' OR [Post Code] = '" + textBox3 + "')", conn); 
      command.Parameters.Add(new OleDbParameter("@Name", textBox3)); 
      OleDbDataReader reader = command.ExecuteReader(); 

      LoopThroughRecs(reader); 
      // Insert code to process data. 
     } 
     finally 
     { 
      conn.Close(); 
     } 
    } 

    private void LoopThroughRecs(OleDbDataReader Data) 
    { 
     if (Data.Read()) 
     { 
      customid.Text = Data["CustID"].ToString(); 
      FirstName.Text = Data["Initial"].ToString(); 
      LastName.Text = Data["Surname"].ToString(); 
      Address1.Text = Data["Address 1"].ToString(); 
      Address2.Text = Data["Address 2"].ToString(); 
      Address3.Text = Data["Address 3"].ToString(); 
      TownCity.Text = Data["Post Town"].ToString(); 
      PostCode.Text = Data["Post Code"].ToString(); 
      Telephone.Text = Data["Telephone"].ToString(); 
     } 

    } 

    private void button3_Click(object sender, EventArgs e) 
    { 
     System.Data.OleDb.OleDbConnection conn = new 
     System.Data.OleDb.OleDbConnection(); 
     conn.ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=BoilerSvc_be.mdb"; 
     try 
     { 
      conn.Open(); 
      OleDbCommand command = new OleDbCommand("UPDATE tblContacts SET Archived = 1 WHERE CustID = "CustID"); 
      command.Parameters.Add(new OleDbParameter("@ID", customid)); 
     } 
     finally 
     { 
      customid.Text = null; 
      FirstName.Text = null; 
      LastName.Text = null; 
      Address1.Text = null; 
      Address2.Text = null; 
      Address3.Text = null; 
      TownCity.Text = null; 
      PostCode.Text = null; 
      Telephone.Text = null; 
      conn.Close(); 
      MessageBox.Show("Customer Archived"); 
      } 
     } 
    } 
} 

Answer 1

あなたの更新コマンドが正しくないようです。代わりにこれを試してみてください：

OleDbCommand command = new OleDbCommand("UPDATE tblContacts SET Archived = 1 WHERE CustID = @ID"); 
command.Parameters.Add(new OleDbParameter("@ID", customid)); 

また、SQLインジェクションを防ぐためにも、あなたのselect文でパラメータを使用しよう：

"SELECT * FROM Contacts WHERE Archived = 0 AND (Surname = @Name OR..." 
command.Parameters.Add(new OleDbParameter("@Name", textBox3.Text)); 
//And also for other 

Answer 2

あなたの更新にcommand.ExecuteNonQuery();を忘れてしまいました。

OleDbCommand command = new OleDbCommand("UPDATE tblContacts SET Archived = 1 WHERE CustID = @ID"); 
command.Parameters.Add(new OleDbParameter("@ID", customid)); 
command.ExecuteNonQuery();