// 定义必要的变量private SqlConnection sqlConn;private SqlDataAdapter sqlDA1;private SqlDataAdapter sqlDA2;private SqlCommand sqlComm;private System.Data.SqlClient.SqlDataReader dr;//初始化变量sqlConn.ConnectionString="字符串"sqlConn.Open();sqlComm.CommandText="select * from 表名";sqlComm.CommandType=CommandType.Text;sqlComm.Connection=sqlConn;dr=sqlComm1.ExecuteReader();//取字段string s;for(int i=0;i<=dr.FieldCount-1;i++)...{ s+=dr.GetName(i);//此方法返回字段名;}