DBReader提供字符串的長度而不是字符串

Question

目前我的問題是，當我運行代碼時，它顯示了一個數據網格，其名稱爲Forename而不是Forename本身的length。任何人有任何線索，似乎很愚蠢。

List<string> NameList = new List<string>(); 
string connectionString = "Server = localhost; Database = TestDb; Trusted_Connection = True;"; 
try 
    { 
    IDbConnection dbcon; 
    using (dbcon = new SqlConnection(connectionString)) 
    { 
     dbcon.Open(); 
     using (IDbCommand dbcmd = dbcon.CreateCommand()) 
     { 
      string sql = "Select * from people"; 
      dbcmd.CommandText = sql; 
      using (IDataReader reader = dbcmd.ExecuteReader()) 
      { 
       while (reader.Read()) 
       { 
        string FirstName = (string) reader["ForeName"]; 
        NameList.Add(FirstName); 
       } 
       DataGrid1.ItemsSource = NameList.ToList(); 
       reader.Close(); 
       dbcon.Close(); 
      } 
     } 
    } 
} 
catch (Exception ex) 
{ 
    MessageBox.Show(ex.ToString()); 
} 

Answer 1

更改List<string>到類似下面

IList<string> NameList = new List<string>(); 
DataGrid1.DataSource = NameList.Select(s => new 
         { 
          Value = s 
         }).ToList(); 

東西沿着這些路線以下不傷害嘗試