Dropdown list with a Database

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SQL-Server-2005

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Posted 26-Oct-11 18:25pm

bandroid

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7 solutions

Solution 1

Filter Items in the Dropdown control after DataBinding[^] might help you.

http://www.asp.net/data-access/tutorials/master-detail-filtering-with-a-dropdownlist-vb[^] might also be useful to you.

Posted 26-Oct-11 19:21pm

Abhinav S

Solution 5

Thanks All..

Problem has been resolved.. :)

Posted 31-Oct-11 15:31pm

bandroid

Solution 6

U can use an ordinary listview. Select data into datatable, loop through each row reading the value in each column pad it right appropriately. Concatenate values from one row into a string variable and add the variable to the list view.

Posted 11-Nov-11 12:04pm

codejet

Solution 7

Use SqlDataSource control and configure it from smart tag in design mode. Mention the where condition and bind it to the drop down list

Posted 11-Nov-11 16:32pm

moneymakermaster

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P.Salini · Accepted Answer · 2011-10-26T21:21:00

In aspx set

HTML

autopostback="true"

property to dropdown.

and in code behind

In dropdown selected index changed event write the query to get your results

C#

string query="select * from tablename where year="+Convert.ToInt32(ddlyear.selectedItem.text);

then connect to database and get records and then bind that dataset to gridview.

Bala Selvanayagam · Accepted Answer · 2011-10-27T01:02:00

1. Load the "DropDownList1"

protected void Page_Load(object sender, EventArgs e)
       {

           try
           {
               if (!Page.IsPostBack){
                   using (SqlConnection oConn = new SqlConnection()){
                       oConn.ConnectionString = "data source=localhost;initial catalog=test_db;user=sa;password=123";
                       SqlDataAdapter oda = new SqlDataAdapter("select distinct year  from Acadamics", oConn);
                       DataSet ds = new DataSet();

                       oda.Fill(ds);
                       DropDownList1.DataSource = ds.Tables[0];
                       DropDownList1.DataValueField = "year";
                       DropDownList1.DataTextField = "year";
                       DropDownList1.DataBind();

                   }
               }

           }
           catch (Exception ex)
           {

               Response.Write(ex.Message);
           }
       }

2. Change the

"DropDownList1"

property to

autopostback="true"

3. Populate the grid on the DropdownList selected index changed event.

protected void DropDownList1_SelectedIndexChanged1(object sender, EventArgs e)
       {
           try
           {
               using (SqlConnection oConn = new SqlConnection())
               {
                   oConn.ConnectionString = "data source=localhost;initial catalog=test_db;user=sa;password=123";
                   SqlDataAdapter oda = new SqlDataAdapter("select *  from Acadamics where year=" + DropDownList1.SelectedValue.ToString(), oConn);
                   DataSet ds = new DataSet();

                   oda.Fill(ds);
                   GridView1.DataSource = ds.Tables[0];
                   GridView1.DataBind();

               }

           }
           catch (Exception ex)
           {

               Response.Write(ex.Message);
           }
       }

try to pass your combo box value to the grid population method using parameters to avoid any SQL injection.

farogh haider · Accepted Answer · 2011-10-27T01:50:00

Solution 4

Collect all data in data table and then filter by selected item from dropdownlist using rowfilter.

Posted 27-Oct-11 1:50am

farogh haider