将数据集中的重复行绑定一次

Question

我正在合并两个数据集，我希望重复的行只绑定一次，我该如何实现？

protected void RadGrid1_NeedDataSource(object source, GridNeedDataSourceEventArgs e) 
{ 
    showRelatedcat(); 
    DataSet ds = new DataSet(); 
    DataSet ds_frd = new DataSet(); 
    String frdQuery = my query 
    String newquery = my other query 
    String queryString = another one 
    try 
    { 
     // Connect to the database and run the query. 
     SqlConnection connection = new SqlConnection(connectionString); 
     SqlDataAdapter adapter = new SqlDataAdapter(newquery, connection); 
     SqlDataAdapter adapter1 = new SqlDataAdapter(frdQuery, connection); 
     // Fill the DataSet. 
     adapter1.Fill(ds_frd); 
     adapter.Fill(ds); 
     ds.Merge(ds_frd, true); 
     connection.Close(); 
    } 
    catch (Exception ex) 
    { 

     // The connection failed. Display an error message. 
     //Message.Text = "Unable to connect to the database."; 

    } 



    RadGrid1.DataSource = ds.Tables[0].; 


} 

这两个查询都有一些共同的行。

Answer 1

您可以使用使用Dataset.Merge IEnumerable的功能 http://social.msdn.microsoft.com/Forums/en-US/csharplanguage/thread/ebe7e4c2-2cad-4a9d-9134-2732d1e05664 它可以让你在重复的情况下，只得到一个价值