C# 如何向DataGridView数据源添加多条语句

在系统中，dt获取URL，我将它们放入getco。。。。函数中，我调用一个sql语句，然后将其添加到gridview数据源中。但它会获取最后一个url的项，因此会覆盖。我怎样才能解决它

     for (int i = 0; i < dt.Rows.Count; i++)
     {
         row = dt.Rows[i];
         GridView1.DataSource = db.getComboxedCombinedRSS( row[0].ToString());
     }

     GridView1.DataBind();




public DataSet getComboxedCombinedRSS(string url)
{
    //SQL string to count the amount of rows within the OSDE_Users table
    //string sql = "SELECT [RSS_Title], [RSS_ID], R.Syndication, R.Category FROM RSS AS R INNER JOIN CombinedFeeds AS C ON  C.URL = R.URL  WHERE C.Name='" +name+" ' ORDER BY RSS_Date desc";
    string sql="SELECT top 30 [RSS_Title], [RSS_ID], Syndication, Category FROM RSS where URL= '"+url+"' order by RSS_DATE";
    SqlDataAdapter adapt = new SqlDataAdapter(sql, Connect());
    DataSet ds = new DataSet();
    adapt.Fill(ds);

    // result of query filled into datasource
    adapt.Dispose();

    closeConnection();
    return ds;
}

---

你的循环正在覆盖它。只有leventkalay92才能做到这一点：机制应该是什么？是否将每个结果集添加到dgv？只保留第一个？保留一些，忽略其余的？您只告诉了您所面临的问题，而没有告诉要求..谢谢，但它没有添加第二个，因此else语句不起作用？RSS_ID是RSS_日期的主键吗？getcomboxed函数中有错误，它返回ds，但无效函数我感到困惑

 DataSet ds = new DataSet();
 for (int i = 0; i < dt.Rows.Count; i++)
     {
         row = dt.Rows[i];
        db.getComboxedCombinedRSS( row[0].ToString(), ds);
     }
     GridView1.DataSource = ds;
     GridView1.DataBind();




public void getComboxedCombinedRSS(string url, DataSet ds)
{
    //SQL string to count the amount of rows within the OSDE_Users table
    //string sql = "SELECT [RSS_Title], [RSS_ID], R.Syndication, R.Category FROM RSS AS R INNER JOIN CombinedFeeds AS C ON  C.URL = R.URL  WHERE C.Name='" +name+" ' ORDER BY RSS_Date desc";
    string sql="SELECT top 30 [RSS_Title], [RSS_ID], Syndication, Category FROM RSS where URL= '"+url+"' order by RSS_DATE";
    SqlDataAdapter adapt = new SqlDataAdapter(sql, Connect());

    adapt.Fill(ds);

    // result of query filled into datasource
    adapt.Dispose();

    closeConnection();

}