Select Method (String, String, IEnumerable, GetIdTitle, Object, Boolean)

HttpServer.dll

previous page next page

Collapse AllExpand All

Code: All Code: Multiple Code: C# Code: Visual Basic Code: Visual C++

C# Visual Basic
Visual C++

C# Webserver

FormHelper..::.Select Method (String, String, IEnumerable, GetIdTitle, Object, Boolean)

FormHelper Class Example See Also Send Feedback

Creates a select list with the values in a collection.

Namespace: HttpServer.Helpers
Assembly: HttpServer (in HttpServer.dll) Version: 1.0.0.0 (1.0.0.0)

Syntax

C#
public static string Select( string name, string id, IEnumerable collection, GetIdTitle getIdTitle, Object selectedValue, bool firstEmpty )

Visual Basic (Declaration)
Public Shared Function Select ( _ name As String, _ id As String, _ collection As IEnumerable, _ getIdTitle As GetIdTitle, _ selectedValue As Object, _ firstEmpty As Boolean _ ) As String

Visual C++
public: static String^ Select( String^ name, String^ id, IEnumerable^ collection, GetIdTitle^ getIdTitle, Object^ selectedValue, bool firstEmpty )

Parameters

name: Type: System..::.String
Name of the SELECT-tag

id: Type: System..::.String
Id of the SELECT-tag

collection: Type: System.Collections..::.IEnumerable
collection used to generate options.

getIdTitle: Type: HttpServer.Helpers..::.GetIdTitle
delegate used to return id and title from objects.

selectedValue: Type: System..::.Object
value that should be marked as selected.

firstEmpty: Type: System..::.Boolean
First row should contain an empty value.

Return Value

string containtain a SELECT-tag.

Examples

CopyC#

// Class that is going to be used in a SELECT-tag.
public class User
{
    private readonly string _realName;
    private readonly int _id;
    public User(int id, string realName)
    {
        _id = id;
        _realName = realName;
    }
    public string RealName
    {
        get { return _realName; }
    }

    public int Id
    {
        get { return _id; }
    }
}

// Using an inline delegate to generate the select list
public void UserInlineDelegate()
{
    List<User> items = new List<User>();
    items.Add(new User(1, "adam"));
    items.Add(new User(2, "bertial"));
    items.Add(new User(3, "david"));
    string htmlSelect = Select("users", "users", items, delegate(object o, out object id, out object value)
                                                        {
                                                            User user = (User)o;
                                                            id = user.Id;
                                                            value = user.RealName;
                                                        }, 2, true);
}

// Using an method as delegate to generate the select list.
public void UseExternalDelegate()
{
    List<User> items = new List<User>();
    items.Add(new User(1, "adam"));
    items.Add(new User(2, "bertial"));
    items.Add(new User(3, "david"));
    string htmlSelect = Select("users", "users", items, UserOptions, 1, true);
}

// delegate returning id and title
public static void UserOptions(object o, out object id, out object title)
{
    User user = (User)o;
    id = user.Id;
    value = user.RealName;
}