我如何使用選擇C來填充組合框＃

Question

我正在使用下一個代碼。

public void MostrarCombobox(ComboBox cmbIDart) 
    { 
     Command = "SELECT idArtigoAvaliar FROM dbo.PorAvaliasao WHERE (avaliado = 0) AND (idAutor ='" + Autor.id2 + "')"; 

     SqlCommand Comm1 = new SqlCommand(Command, Conn); 
     SqlDataAdapter data = new SqlDataAdapter(Comm1); 

     SqlCommand sqlCommand = new SqlCommand(); 

     using (Conn) 
     { 
      sqlCommand = Conn.CreateCommand(); 

      sqlCommand.CommandText = Command; 

      SqlDataAdapter sda = new SqlDataAdapter(sqlCommand.CommandText, Conn); 

      SqlCommandBuilder scb = new SqlCommandBuilder(sda); 

      //Criar uma tabela para receber os dados 
      DataTable dTable = new DataTable(); 

      //Preencher a tabela 
      sda.Fill(dTable); 

      BindingSource bSource = new BindingSource(); 
      bSource.DataSource = dTable; 
      cmbIDart.DataSource = bSource; 

      Conn.Close(); 
     } 

    } 

我的問題是，當我開始打電話給組合框，它顯示System.Data...，我希望他們表現出的價值。

我在做什麼錯？

Answer 1

我認爲在你的組合框中，行看起來像顯示;

System.Data.DataRowView 
System.Data.DataRowView 
System.Data.DataRowView 
System.Data.DataRowView 
System.Data.DataRowView 

你需要設置你的組合框DisplayMember和ValueMember性能。

如果這不能解決您的問題，請嘗試使動態更清晰。

Combobox1.Items.Clear(); 

string Command = "SELECT idArtigoAvaliar FROM dbo.PorAvaliasao WHERE (avaliado = 0) AND (idAutor ='" + Autor.id2 + "')"; 

SqlCommand cmd = new SqlCommand(Command, Conn); 
cmd.CommandText = Command; 

SqlDataReader dr = cmd.ExecuteReader(); 
while (dr.Read()) 
{ 
    Combobox1.Items.Add(dr["idArtigoAvaliar"].ToString()); 
}