C#

try
{  
    DateTime time = DateTime.TryParse(text);
}
catch(FormatException)
{
  // oops, error
}

SaarDagan wrote:

i want to make there user name as a key

<br />
        Dim onlineusers As Integer<br />
        Dim cnn As New OleDbConnection<br />
        Dim da As OleDbDataReader<br />
        Dim cmd As New OleDbCommand<br />
        ListView1.Clear()cnn.ConnectionString= "Provider=Microsoft.JET.OLEDB.4.0;DATASOURCE=\\127.0.0.1\Messenger\chatdb.MDB"<br />
        cnn.Open()<br />
        cmd.Connection = cnn<br />
        cmd.CommandText = "select nickname,online from users"<br />
        da = cmd.ExecuteReader()<br />
        Do While da.Read<br />
            If da.GetValue(1) = "False" Then<br />
                ListView1.Items.Add(da.GetValue(0), 2)<br />
            Else<br />
                ListView1.Items.Add(da.GetValue(0), 1)<br />
            End If<br />
<br />
        Loop<br />
        cnn.Close()