Can I Set Each Item In A Listbox As A Parameter When Updating Access Database?

Hello everyone. I am using C#, and posted this in the C# forum, but was told to try here, as for some reason I just can't get this to work. Everyone was very helpful, but for some reason I keep getting a message that a value is not being given for one or more required parameters. This doesn't make any sense though, as I am specifying a value for all parameters...

Basically, I have a listBox that has several items in it. I want to update the database for each item that appears in the listBox. I can't seem to get this to work though, no matter what I try, and it is driving me nuts... lol

Here is a link to my original thread: http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2349891&SiteID=1

Here is my code:





Code Block

string whereClause = "";
for (int i = 0; i < Panel1ListView1.Items.Count; i++)
{
if (i == 0)
{
whereClause = "ID = " + Panel1ListView1.Items[0].Text;
}
else
{
whereClause += " OR ID = " + Panel1ListView1.Items[i].Text;
}
}

try
{
using (OleDbConnection conn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Environment.CurrentDirectory + @"DB.mdb;Jet OLEDB:Database Password=xxx;"))
{
OleDbCommand cmd;
conn.Open();

string command = "UPDATE [Table1] SET [Status] = @P1, [Name] = @P2, [Number] = @P3 WHERE " + whereClause;

cmd = new OleDbCommand(command, conn);

cmd.Parameters.Add("@P1", OleDbType.VarChar).Value = Panel1TextBox3.Text;
cmd.Parameters.Add("@P2", OleDbType.VarChar).Value = Panel1TextBox1.Text;
cmd.Parameters.Add("@P3", OleDbType.VarChar).Value = Panel1TextBox2.Text;

int i = cmd.ExecuteNonQuery();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
I really appreciate any help anyone can give me. I REALLY want to get this working. I am open to any suggestions and will try anything.

Thank you very much for your help.