1
Answer

Combine two select Queries

I need a Query, example to combine two Select Queries which uses same table and column name and display the result in a Single table
 Below is my Scenario
select Column1,count(Column2) as County from table1 where product='undefined' group by status
select Column1,count(Column2) as County from table1 where product='undefined' group by status
 
 
Thanks in Advance! 
Answers (1)
0
Niradhip Chakraborty

Niradhip Chakraborty

NA 6.5k 526.8k 15y

1) DataReader does not implement any specific interface so that it can
be bindable
2) DataReader is for reading data.So if some how u r able to bind
that,it won't allow u to edit that.So it's of no use.
3) DataReader is forward only,that means u can get a record at a time
but can't traverse back to the prev record.

This code shows how to bind gridview with data reader
Use this code on page load

 
void Page_Load(Object sender, EventArgs e)
{
  String Q;
  Sql command cmd;
  Sql DataReader dr;


  SqlConnection conn = new SqlConnection();

  conn.ConnectionString = ConfigurationManager.ConnectionStrings        ["cn"].ConnectionString.ToString();

conn.Open();
         
Q = "select * from tablename";
              
cmd= New Sqlcommand(Q, conn); 
         
dr = cmd.ExecuteReader();         
         
Gridview1.DataSource = dr;
           
Gridview1.DataBind();
}

 
0
Kirtan Patel

Kirtan Patel

NA 35k 2.8m 15y
When you bind Data reader to gridView


it iterates through  records one by one and All records Rendered One bye one in HTML Table row

so as a result you see data in Grid View .