/// <summary>
/// Creates a select list with the values in a collection.
/// </summary>
/// <param name="name">Name of the SELECT-tag</param>
/// <param name="id">Id of the SELECT-tag</param>
/// <param name="collection">collection used to generate options.</param>
/// <param name="getIdTitle">delegate used to return id and title from objects.</param>
/// <param name="selectedValue">value that should be marked as selected.</param>
/// <param name="firstEmpty">First row should contain an empty value.</param>
/// <returns>string containtain a SELECT-tag.</returns>
/// <seealso cref="GetIdTitle"/>
/// <example>
/// <code>
/// // 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;
/// }
/// </code>
/// </example>
public static string Select(string name, string id, IEnumerable collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
if (id == null)
{
throw new ArgumentNullException("id");
}
if (collection == null)
{
throw new ArgumentNullException("collection");
}
if (getIdTitle == null)
{
throw new ArgumentNullException("getIdTitle");
}
StringBuilder sb = new StringBuilder();
sb.AppendLine("<select name=\"" + name + "\" id=\"" + id + "\">");
Options(sb, collection, getIdTitle, selectedValue, firstEmpty);
sb.AppendLine("</select>");
return(sb.ToString());
}
/// <summary>
/// Creates a select list with the values in a collection.
/// </summary>
/// <param name="name">Name of the SELECT-tag</param>
/// <param name="id">Id of the SELECT-tag</param>
/// <param name="collection">collection used to generate options.</param>
/// <param name="getIdTitle">delegate used to return id and title from objects.</param>
/// <param name="selectedValue">value that should be marked as selected.</param>
/// <param name="firstEmpty">First row should contain an empty value.</param>
/// <param name="htmlAttributes">name, value collection of extra html attributes.</param>
/// <returns>string containtain a SELECT-tag.</returns>
/// <seealso cref="GetIdTitle"/>
public static string Select(string name, string id, IEnumerable collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty, params string[] htmlAttributes)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
if (id == null)
{
throw new ArgumentNullException("id");
}
if (collection == null)
{
throw new ArgumentNullException("collection");
}
if (getIdTitle == null)
{
throw new ArgumentNullException("getIdTitle");
}
if (htmlAttributes != null && (htmlAttributes.Length % 2) != 0)
{
throw new ArgumentException("Invalid html attribute list.");
}
StringBuilder sb = new StringBuilder();
sb.Append("<select name=\"" + name + "\" id=\"" + id + "\"");
WebHelper.GenerateHtmlAttributes(sb, htmlAttributes);
sb.AppendLine(">");
Options(sb, collection, getIdTitle, selectedValue, firstEmpty);
sb.AppendLine("</select>");
return(sb.ToString());
}
/// <exception cref="ArgumentNullException"><c>sb</c> is null.</exception>
private static void Options(
StringBuilder sb, IEnumerable collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty)
{
if (sb == null)
{
throw new ArgumentNullException("sb");
}
if (collection == null)
{
throw new ArgumentNullException("collection");
}
if (getIdTitle == null)
{
throw new ArgumentNullException("getIdTitle");
}
if (firstEmpty)
{
sb.AppendLine("<option value=\"\"> </option>");
}
foreach (object o in collection)
{
object value;
string title;
getIdTitle(o, out value, out title);
sb.Append("<option value=\"");
if (value != null)
{
sb.Append(value);
}
sb.Append("\"");
if (value != null && selectedValue != null && value.Equals(selectedValue))
{
sb.Append(" selected=\"selected\"");
}
sb.Append(">");
if (title == null)
{
sb.AppendLine(" </option>");
}
else
{
sb.Append(title);
sb.AppendLine("</option>");
}
}
}
/// <summary>
/// Generate a list of HTML options
/// </summary>
/// <param name="collection">collection used to generate options.</param>
/// <param name="getIdTitle">delegate used to return id and title from objects.</param>
/// <param name="selectedValue">value that should be marked as selected.</param>
/// <param name="firstEmpty">First row should contain an empty value.</param>
/// <returns></returns>
public static string Options(IEnumerable collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty)
{
if (collection == null)
{
throw new ArgumentNullException("collection");
}
if (getIdTitle == null)
{
throw new ArgumentNullException("getIdTitle");
}
StringBuilder sb = new StringBuilder();
Options(sb, collection, getIdTitle, selectedValue, firstEmpty);
return(sb.ToString());
}
public static string Select(
string name, string id, ICollection collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty)
{
StringBuilder sb = new StringBuilder();
sb.AppendLine("<select name=\"" + name + "\" id=\"" + id + "\">");
if (firstEmpty)
{
sb.AppendLine("<option value=\"\"> </option>");
}
foreach (object o in collection)
{
object value;
string title;
getIdTitle(o, out value, out title);
sb.Append("<option value=\"");
if (value != null)
{
sb.Append(value);
}
sb.Append("\"");
if (value != null && value.Equals(selectedValue))
{
sb.Append(" selected=\"selected\"");
}
sb.Append(">");
if (title == null)
{
sb.AppendLine(" </option>");
}
else
{
sb.Append(value);
sb.AppendLine("</option>");
}
}
sb.AppendLine("</select>");
return(sb.ToString());
}
/// <summary>
/// Creates a select list with the values in a collection.
/// </summary>
/// <param name="name">Name of the SELECT-tag</param>
/// <param name="collection">collection used to generate options.</param>
/// <param name="getIdTitle">delegate used to return id and title from objects.</param>
/// <param name="selectedValue">value that should be marked as selected.</param>
/// <param name="firstEmpty">First row should contain an empty value.</param>
/// <returns>string containtain a SELECT-tag.</returns>
/// <seealso cref="GetIdTitle"/>
public static string Select(string name, IEnumerable collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty)
{
return Select(name, name, collection, getIdTitle, selectedValue, firstEmpty);
}
private static void Options(StringBuilder sb, IEnumerable collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty)
{
if (sb == null)
throw new ArgumentNullException("sb");
if (collection == null)
throw new ArgumentNullException("collection");
if (getIdTitle == null)
throw new ArgumentNullException("getIdTitle");
if (firstEmpty)
sb.AppendLine("<option value=\"\"> </option>");
foreach (object o in collection)
{
object value;
string title;
getIdTitle(o, out value, out title);
sb.Append("<option value=\"");
if (value != null)
sb.Append(value);
sb.Append("\"");
if (value != null && selectedValue != null && value.Equals(selectedValue))
sb.Append(" selected=\"selected\"");
sb.Append(">");
if (title == null)
sb.AppendLine(" </option>");
else
{
sb.Append(title);
sb.AppendLine("</option>");
}
}
}
/// <summary>
/// Generate a list of HTML options
/// </summary>
/// <param name="collection">collection used to generate options.</param>
/// <param name="getIdTitle">delegate used to return id and title from objects.</param>
/// <param name="selectedValue">value that should be marked as selected.</param>
/// <param name="firstEmpty">First row should contain an empty value.</param>
/// <returns></returns>
public static string Options(IEnumerable collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty)
{
if (collection == null)
throw new ArgumentNullException("collection");
if (getIdTitle == null)
throw new ArgumentNullException("getIdTitle");
StringBuilder sb = new StringBuilder();
Options(sb, collection, getIdTitle, selectedValue, firstEmpty);
return sb.ToString();
}
/// <summary>
/// Creates a select list with the values in a collection.
/// </summary>
/// <param name="name">Name of the SELECT-tag</param>
/// <param name="id">Id of the SELECT-tag</param>
/// <param name="collection">collection used to generate options.</param>
/// <param name="getIdTitle">delegate used to return id and title from objects.</param>
/// <param name="selectedValue">value that should be marked as selected.</param>
/// <param name="firstEmpty">First row should contain an empty value.</param>
/// <param name="htmlAttributes">name, value collection of extra html attributes.</param>
/// <returns>string containtain a SELECT-tag.</returns>
/// <seealso cref="GetIdTitle"/>
public static string Select(string name, string id, IEnumerable collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty, params string[] htmlAttributes)
{
if (name == null)
throw new ArgumentNullException("name");
if (id == null)
throw new ArgumentNullException("id");
if (collection == null)
throw new ArgumentNullException("collection");
if (getIdTitle == null)
throw new ArgumentNullException("getIdTitle");
if (htmlAttributes != null && (htmlAttributes.Length % 2) != 0)
throw new ArgumentException("Invalid html attribute list.");
StringBuilder sb = new StringBuilder();
sb.Append("<select name=\"" + name + "\" id=\"" + id + "\"");
WebHelper.GenerateHtmlAttributes(sb, htmlAttributes);
sb.AppendLine(">");
Options(sb, collection, getIdTitle, selectedValue, firstEmpty);
sb.AppendLine("</select>");
return sb.ToString();
}
/// <summary>
/// Creates a select list with the values in a collection.
/// </summary>
/// <param name="name">Name of the SELECT-tag</param>
/// <param name="id">Id of the SELECT-tag</param>
/// <param name="collection">collection used to generate options.</param>
/// <param name="getIdTitle">delegate used to return id and title from objects.</param>
/// <param name="selectedValue">value that should be marked as selected.</param>
/// <param name="firstEmpty">First row should contain an empty value.</param>
/// <returns>string containtain a SELECT-tag.</returns>
/// <seealso cref="GetIdTitle"/>
/// <example>
/// <code>
/// // 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;
/// }
/// </code>
/// </example>
public static string Select(string name, string id, IEnumerable collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty)
{
if (name == null)
throw new ArgumentNullException("name");
if (id == null)
throw new ArgumentNullException("id");
if (collection == null)
throw new ArgumentNullException("collection");
if (getIdTitle == null)
throw new ArgumentNullException("getIdTitle");
StringBuilder sb = new StringBuilder();
sb.AppendLine("<select name=\"" + name + "\" id=\"" + id + "\">");
Options(sb, collection, getIdTitle, selectedValue, firstEmpty);
sb.AppendLine("</select>");
return sb.ToString();
}
/// <summary>
/// Creates a select list with the values in a collection.
/// </summary>
/// <param name="name">Name of the SELECT-tag</param>
/// <param name="collection">collection used to generate options.</param>
/// <param name="getIdTitle">delegate used to return id and title from objects.</param>
/// <param name="selectedValue">value that should be marked as selected.</param>
/// <param name="firstEmpty">First row should contain an empty value.</param>
/// <returns>string containtain a SELECT-tag.</returns>
/// <seealso cref="GetIdTitle"/>
public static string Select(string name, IEnumerable collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty)
{
return(Select(name, name, collection, getIdTitle, selectedValue, firstEmpty));
}
public static string Select(string name, ICollection collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty)
{
return(FormHelper.Select(name, name, collection, getIdTitle, selectedValue, firstEmpty));
}
public static string Select(
string name, string id, ICollection collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty)
{
StringBuilder sb = new StringBuilder();
sb.AppendLine("<select name=\"" + name + "\" id=\"" + id + "\">");
if (firstEmpty)
sb.AppendLine("<option value=\"\"> </option>");
foreach (object o in collection)
{
object value;
string title;
getIdTitle(o, out value, out title);
sb.Append("<option value=\"");
if (value != null)
sb.Append(value);
sb.Append("\"");
if (value != null && value.Equals(selectedValue))
sb.Append(" selected=\"selected\"");
sb.Append(">");
if (title == null)
sb.AppendLine(" </option>");
else
{
sb.Append(value);
sb.AppendLine("</option>");
}
}
sb.AppendLine("</select>");
return sb.ToString();
}
public static string Select(
string name, ICollection collection, GetIdTitle getIdTitle, object selectedValue, bool firstEmpty)
{
return FormHelper.Select(name, name, collection, getIdTitle, selectedValue, firstEmpty);
}
