dropdownlist

I'm using this code to sort values in dropdownlist :
DropDownList1.DataSource = DropDownList1.Items.Cast<ListItem>()
.OrderBy(o => o.Value).ToList();
ddlApoeni.DataBind();
the problem is that result is descending order, but i want ascending ?

Hi

When you are call OrderBy its give the ascending order.

Here my complete sample code

public static IEnumerable OrderBy(this IEnumerable list, string sortExpression)
        {
            sortExpression += "";
            string[] parts = sortExpression.Split(' ');
            bool descending = false;
            string property = "";

            if (parts.Length > 0 && parts[0] != "")
            {
                property = parts[0];

                if (parts.Length > 1)
                {
                    descending = parts[1].ToLower().Contains("esc");
                }

                PropertyInfo prop = typeof(T).GetProperty(property);

                if (prop == null)
                {
                    throw new Exception("No property '" + property + "' in + " + typeof(T).Name + "'");
                }

                if (descending)
                    return list.OrderByDescending(x => prop.GetValue(x, null));
                else
                    return list.OrderBy(x => prop.GetValue(x, null));
            }

            return list;
        }

Thank you

1 Reply

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Master Billa17y ago
Hi

When you are call OrderBy its give the ascending order.

Here my complete sample code

public static IEnumerable OrderBy(this IEnumerable list, string sortExpression)
        {
            sortExpression += "";
            string[] parts = sortExpression.Split(' ');
            bool descending = false;
            string property = "";

            if (parts.Length > 0 && parts[0] != "")
            {
                property = parts[0];

                if (parts.Length > 1)
                {
                    descending = parts[1].ToLower().Contains("esc");
                }

                PropertyInfo prop = typeof(T).GetProperty(property);

                if (prop == null)
                {
                    throw new Exception("No property '" + property + "' in + " + typeof(T).Name + "'");
                }

                if (descending)
                    return list.OrderByDescending(x => prop.GetValue(x, null));
                else
                    return list.OrderBy(x => prop.GetValue(x, null));
            }

            return list;
        }

Thank you