Question

我试图从Microsoft Acess获取一些数据并通过MessageBoxes检查它，这样用户就可以看到这是否是他想要的数据，但是代码根本没有执行。我看不到任何消息框，也没有抛出任何异常。下面是我放在Button事件中的代码。（我只做了第一次，如果CNPJ那个）。

if (TipoConsulta.Text == "CNPJ")
{
    try
    {
        string comando = "SELECT razao_social FROM tblImobiliarias WHERE cnpj ='" + ValorConsulta.Text + "'";
        string conn = "Provider=Microsoft.ACE.OLEDB.12.0; Data Source=\\\\10.7.41.153\\Apoio\\Davi_Database\\Base_Imo.accdb";
        OleDbConnection Connection = new OleDbConnection(conn);
        OleDbCommand Command = new OleDbCommand(comando, Connection);
        Connection.Open();
        OleDbDataReader reader = Command.ExecuteReader();
        while (reader.Read())
        {
            foreach (OleDbDataReader resultado in reader)
            {
                DialogResult resultadoDialogo;
                resultadoDialogo = MessageBox.Show("Encontrada razão social '" + resultado.ToString() + "'.\n Está correto?", "Pesquisa", MessageBoxButtons.YesNo);
                if (resultadoDialogo == System.Windows.Forms.DialogResult.Yes)
                {

                    MessageBox.Show("Executado CarregaImobiliaria().");
                    break;
                }
                else if (resultadoDialogo == System.Windows.Forms.DialogResult.No)
                {
                    continue;
                }
            }
        }
    }
    catch (InvalidOperationException)
    {
        MessageBox.Show("Nada foi encontrado com o CNPJ " + ValorConsulta.Text + ".", "Pesquisa");
    }
}
else if (TipoConsulta.Text == "Razão Social")
{
    MessageBox.Show("Tipo: Razão Social");
    try
    {

    }
    catch (InvalidOperationException)
    {

    }
}
else if (TipoConsulta.Text == "RGI")
{
    MessageBox.Show("Tipo: Sub: RGI");
    try
    {

    }
    catch (InvalidOperationException)
    {

    }
}

Answer 1

问题可能是缺少一个接收DataReader值的矩阵，因为foreach块从未被执行过。我最后使用了一段时间。

string _cmd = "SELECT razao_social FROM tblImobiliarias WHERE cnpj ='" + ValorConsulta.Text + "'";
                    string conn = "Provider=Microsoft.ACE.OLEDB.12.0; Data Source=\\\\10.7.41.153\\Apoio\\Davi_Database\\Base_Imo.accdb";
                    OleDbConnection Connection = new OleDbConnection(conn);
                    OleDbCommand Command = new OleDbCommand(_cmd, Connection);
                    Connection.Open();
                    OleDbDataReader reader = Command.ExecuteReader();
                    while (reader.Read())
                    {
                        int _resMatriz = 0;
                        DialogResult result;
                        result = MessageBox.Show("Encontrado imobiliária: " + reader[_resMatriz] + ".\nEstá correto?", "Pesquisa", MessageBoxButtons.YesNo);
                        _resMatriz++;
                        if (result == System.Windows.Forms.DialogResult.Yes)
                        {
                            MessageBox.Show("CarregaImo()");
                            break;
                        }
                        else
                        {
                            continue;
                        } 
                    }

Try-catch块根本不执行

1 个答案: