Cannot change SELECT command Datalist

Question

Hi , 
I have a datalist with a selectedcommand , but i want to change it at runtime ( i have a dropdownlist and want to search based upon the values of dropdownlist) , I used this in button click event:
if (DropDownList1.Text=="blabla")
            this.SqlDataSource1.SelectCommand = "SELECT prodID,[Prodname], [Price], [ProdCode], [Weights], [Size], [Photo] FROM [Products] where Cat='ct1' and Price<10000 ";
            this.SqlDataSource1.DataBind();
            DataList1.DataBind();
but  nothing happens. I also tried http://social.msdn.microsoft.com/Forums/sqlserver/en-US/b1d4a3a5-7ba3-4383-a52a-fd472f1aad11/change-sqldatasource-select-command-at-runtime?forum=Offtopic 
but it doesn't work for me . any ideas ?

Answer 1

Hi,
Try the below code.
if (DropDownList1.Text == "blabla")
SqlDataSource SqlDataSource1 = new SqlDataSource();
SqlDataSource1.SelectCommand = "SELECT prodID, [Prodname], [Price], [ProdCode], [Weights], [Size], [Photo] FROM [Products] where Cat='@cat' and Price < @price";
SqlDataSource1.SelectParameters.Clear();
SqlDataSource1.SelectParameters.Add("cat", TypeCode.Int32, "1");
SqlDataSource1.SelectParameters.Add("price", TypeCode.Decimal, "1");
//your connection string from web.config
SqlDataSource1.ConnectionString = ConfigurationManager.ConnectionStrings["ConnectString"].ConnectionString;
DataList1.DataSource = SqlDataSource1;
DataList1.DataBind();
SRIRAM