select values of listbox after binding to database

Question

1.00/5 (1 vote)

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My listbox contains many values. I am tring to selects those particular values on listbox control which are already save in my database column. My database column has 3 values and when i trying it to show on listbox it selects only last value.
eg:

ASP.NET

<asp:ListBox ID="ListBox1" runat="server" Height="149px" SelectionMode="Multiple" Width="113px">
        <asp:ListItem Value="1">Vinz</asp:ListItem>
        <asp:ListItem Value="2">Jhen</asp:ListItem>
        <asp:ListItem Value="3">Chris</asp:ListItem>
        <asp:ListItem Value="4">Shynne</asp:ListItem>
        <asp:ListItem Value="5">Chu</asp:ListItem>
        <asp:ListItem Value="6">Mark</asp:ListItem>
        </asp:ListBox>

C#

SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
      {
         ListBox1.SelectedValue = reader["subcategory_id"].ToString();
      }

SQL

select r.*, sc.subcategory_id from dbo.tbl_adregister r INNER JOIN tbl_adsubcategory sc on r.ad_id=sc.ad_id

Table (tbl_adsubcategory) has 1,2,3 in its column (subcategory_id) but only 3 is show selected in the listbox, i want that all 3 is select in the listbox.
Hope you able to understand my problem. Plz help.

Posted 9-Jun-14 8:42am

Raj Negi

Updated 9-Jun-14 8:53am

v2

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2 solutions

Solution 1

here's a clue...

C#

SqlDataReader reader = cmd.ExecuteReader();
List<string> selected = new List<string>();

while (reader.Read())
{
     selected.Add(reader["subcategory_id"].ToString());
}

listView1.SelectedItems.Clear();
for(int i=0;i<selected.count();i++)>
        listView1.Items[(int)i].Selected = true;

</string></string>

Posted 9-Jun-14 9:13am

goathik

Comments

Raj Negi 9-Jun-14 15:32pm

last two close string gives error

goathik 10-Jun-14 7:35am

I'm sorry, I'm not used to this forum text formating. ignore those

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Raj Negi · Accepted Answer · 2014-06-09T22:52:00

Solution 2

Pre select listbox with sql column values[^]

Posted 9-Jun-14 22:52pm

Raj Negi