insert multiple values from listbox to sql DB column

Question

4.00/5 (1 vote)

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I am trying to save multiple values selected by user to sql column on button click.

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:ListItem Value="7">Lilian</asp:ListItem>
        </asp:ListBox>
<asp:Button ID="Button1" runat="server" Text="Save" onclick="Button1_Click" />

C#

protected void Button1_Click(object sender, EventArgs e)
    {
        SqlCommand cmd = new SqlCommand("INSERT INTO tbl_adsubcategory (ad_id,subcategory) VALUES (@ad_id,@subcategory)", con);
        try
        {
            con.Open();
            for (int i = 0; i < ListBox1.Items.Count; i++)
            {
                cmd.Parameters.AddWithValue("@ad_id", 10012);
                cmd.Parameters.AddWithValue("@subcategory" , ListBox1.Items[i].Value);
                cmd.ExecuteNonQuery();
            }
            con.Close();
        }
        catch (Exception)
        {
            throw;
        }
    }

I want result like this: if user select 3,5 and 7 then result is
ad_id subcategory
10012 3
10012 5
10012 7

Posted 7-Jun-14 3:06am

Raj Negi

Updated 8-Dec-17 0:58am

v2

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DamithSL · Accepted Answer · 2014-06-07T03:17:00

Solution 1

clear the parameters in each iteration and add validation to check the selection

C#

con.Open();
for (int i = 0; i < ListBox1.Items.Count; i++)
{
    if (ListBox1.Items[i].Selected)
    {
        cmd.Parameters.Clear();
        cmd.Parameters.AddWithValue("@ad_id", 10012);
        cmd.Parameters.AddWithValue("@subcategory" , ListBox1.Items[i].Value);
        cmd.ExecuteNonQuery();
    }
}

Posted 7-Jun-14 3:17am

DamithSL

Updated 7-Jun-14 3:21am

v2

Comments

Raj Negi 7-Jun-14 9:44am

thank you.

DamithSL 7-Jun-14 9:46am

you are welcome!