c# - Load RSS feeds into GridView's DataSource

Question

On my Page_Load event

DataSet oDs = new DataSet();
oDs.ReadXml("http://stackoverflow.com/feeds");
gvFeeds.DataSource = oDs.Tables[2];
gvFeeds.DataBind();

This populates the GridView as shown below

The DataSet contains 8 DataTables: Feed, Title, Link, Entry, Rank, Category, Author, Summary

DataTable[2] for example, contains the 30 most recent post's Links, as shown above.

---

What I want is for the GridView to show each records Feed, Title, Link, Entry, Rank, Category, Author, Summary

But, when I assign the enter DataSet to the DataSource, it just populates the GridView as if I had assigned it the DataTable[0] object... being the parent feed's header information.

Answer 1

您只能将 GridView 绑定到一个表。例如，使用以下将绑定到“链接”表。

gvFeeds.DataSource = oDs;
gvFeeds.DataMember = "Link";
gvFeeds.DataBind();

但是，如果您的所有表共享相同的模式（不太可能），那么您可以通过转储行手动创建一个新的 DataTable，然后绑定它。

这篇文章中还描述了另一种场景将 两个数据库中的数据添加到一个网格视图中

Answer 2

无法将来自不同表的数据组合在一起，并一次将其绑定到单个 gridView。

编辑：

        //Considering you have all the tables that share the same schema
        //i.e. All are having same column names and types

        //Create an In Memory DataTable
        DataTable consolidateTable = new DataTable("ConsolidatedTable");

        //Add columns with that is same across all of you tables
        consolidateTable.Columns.Add(new DataColumn("firstColumn"));
        consolidateTable.Columns.Add(new DataColumn("secondColumn"));
        //etc..

        //Now go through each record of each table
        foreach (DataTable dt in oDs.Tables)
        {
            foreach (DataRow row in dt.Rows)
            {
                consolidateTable.Rows.Add(row);
            }
        }

        //bind
        gvFeeds.DataSource = consolidateTable;
        gvFeeds.DataBind();

请考虑这只有在所有表都具有相同架构（即相同的 firstColumn、secondColumn 等）时才有可能。否则，这是不可能的。