namespace 操作数据
{
class SqlHelper
{
public DataSet SqlTODs(string cmdstring)
{
DataSet ds = new DataSet();
try
{
string sqlstring = System.Configuration.ConfigurationManager.ConnectionStrings["dbStr"].ConnectionString;
using (SqlConnection conn = new SqlConnection(sqlstring))
{
conn.Open();
//string cmd = cmdstring;
SqlCommand cmd = conn.CreateCommand();
cmd.CommandText = cmdstring;
SqlDataAdapter da = new SqlDataAdapter();
da.Fill(ds);
return ds;
}
}
catch(Exception ex)
{
MessageBox.Show("错误信息为: " + ex.Message);
return ds;
}
}
}
}
原因是：没有给SqlDataAdapter传递参数 ，