I've created a custom Image Field Template which works fine. I decided to create some kind of validation for image sizes so I've created a custom validation attribute. here is the code:
public class ImageSizeValidator : ValidationAttribute
{
public long MaxSize { get; set; }
public long MinSize { get; set; }
public override bool IsValid(object value)
{
if (value == null)
return true;
byte[] image = (byte[]) value;
if (image.Length / 1024L > MaxSize || image.Length / 1024L < MinSize)
return false;
return true;
}
}
and here is my FieldTemplate Image_Edit.ascx:
<%# Control Language="C#" AutoEventWireup="true" CodeBehind="Image_Edit.ascx.cs" Inherits="RastinArgham.CRM.Web.DynamicData.FieldTemplates.Image_Edit" %>
<asp:FileUpload ID="FileUpload1" runat="server" OnDataBinding="FileUpload1DataBinding" />
<asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator1" CssClass="DDControl DDValidator" ControlToValidate="FileUpload1" Display="Static" Enabled="false" />
<asp:DynamicValidator runat="server" ID="DynamicValidator1" CssClass="DDControl DDValidator" ControlToValidate="FileUpload1" Display="Static" />
and here is Image_Edit.ascx.cs:
public partial class Image_Edit : System.Web.DynamicData.FieldTemplateUserControl
{
protected void Page_Load(object sender, EventArgs e)
{
SetUpValidator(RequiredFieldValidator1);
SetUpValidator(DynamicValidator1);
}
protected override void ExtractValues(IOrderedDictionary dictionary)
{
if (FileUpload1.PostedFile == null || String.IsNullOrEmpty(FileUpload1.PostedFile.FileName) || FileUpload1.PostedFile.InputStream.Length == 0)
return;
dictionary[Column.Name] = FileUpload1.FileBytes;
}
public override Control DataControl
{
get
{
return FileUpload1;
}
}
}
and finally my entity meta data class:
[Display(Name = "ServicePhoto", Order = 410, GroupName = "Misc")]
[HideColumnIn(PageTemplate.List)]
[UIHint("Image")]
[ImageSizeValidator(ErrorMessage = "Invalid Photo Size", MinSize = 30, MaxSize = 300)]
public object ServicePhoto { get; set; }
There are two problems:
1- when IsValid(object value) called value is always null!
2- when trying to upload a new image I always get "The value is not valid" Error on client side of
validation.
Related
I'm trying to use ASPxGridView to display a list of ASPxComboBox controls. Both the rows in the grid and the list of options in the combo boxes are populated from code. I'm having problems setting the initial value of the combo boxes.
I'm looking for it to look similar to the image below.
As you can see in the screenshot, I have been able to get both the grid view & the combo boxes to populate, but I can't figure out how to set the initial values of the combo boxes.
In the Init event of the inner combo boxes, there's no obvious property to retrieve the bound object.
I did find a couple other questions on StackOverflow, for which the answer was to add a bound property to the combo box. However, adding SelectedIndex='<%# Bind("Level") %>' to the declaration for InnerCombo gave me the error "Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control."
Here's what I have so far:
Testing.aspx:
<%# Page Title="" Language="C#" MasterPageFile="~/Light.master"
AutoEventWireup="true" CodeBehind="Testing.aspx.cs" Inherits="MyProject.Testing" %>
<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" runat="server">
<dx:ASPxGridView ID="MyGridView" runat="server" KeyFieldName="Name">
<Columns>
<dx:GridViewDataColumn FieldName="Name" />
<dx:GridViewDataColumn FieldName="Level">
<DataItemTemplate>
<dx:ASPxComboBox
runat="server"
ID="InnerCombo"
ValueField="ID"
TextField="Desc"
ValueType="System.Int32"
OnInit="InnerCombo_Init" />
</DataItemTemplate>
</dx:GridViewDataColumn>
</Columns>
</dx:ASPxGridView>
<dx:ASPxButton runat="server" ID="btnSubmit" Text="Submit" OnClick="btnSubmit_Click" />
</asp:Content>
Testing.aspx.cs:
public partial class Testing : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
this.MyGridView.DataSource = GetDefaultSettings();
this.MyGridView.DataBind();
}
}
protected void btnSubmit_Click(object sender, EventArgs e)
{
Debug.WriteLine("btnSubmit_Click");
for (int i = 0; i < MyGridView.VisibleRowCount; i++)
{
object[] row = (object[])MyGridView.GetRowValues(i, "Name", "Value");
// row[1] is null, but we can get the data by finding the combo box itself.
GridViewDataColumn col = (GridViewDataColumn)MyGridView.Columns["Value"];
ASPxComboBox innerCombo = (ASPxComboBox)MyGridView.FindRowCellTemplateControl(i, col, "InnerCombo");
Debug.WriteLine("{0} = {1}", row[0], innerCombo.Value);
}
}
protected void InnerCombo_Init(object sender, EventArgs e)
{
Debug.WriteLine("InnerCombo_Init");
ASPxComboBox innerCombo = sender as ASPxComboBox;
if (innerCombo != null)
{
innerCombo.DataSource = GetValues();
innerCombo.DataBind();
}
}
private static List<ValueClass> GetValues()
{
// Simple for testing; actual method will be database access.
return new List<ValueClass>()
{
new ValueClass(0, "Zero (default)"),
new ValueClass(1, "One"),
new ValueClass(2, "Two"),
new ValueClass(3, "Three"),
};
}
private static List<SettingClass> GetDefaultSettings()
{
// Simple for testing; actual method will be database access + post-processing.
return new List<SettingClass>()
{
new SettingClass("AA", 0),
new SettingClass("BB", 1),
new SettingClass("CC", 0),
};
}
public class ValueClass
{
public int ID { get; private set; }
public string Desc { get; private set; }
public ValueClass(int id, string desc)
{
this.ID = id;
this.Desc = desc;
}
}
public class SettingClass
{
public string Name { get; set; }
public int Value { get; set; }
public SettingClass(string name, int value)
{
this.Name = name;
this.Value = value;
}
}
}
I have WebUserControl with DataBind override:
public partial class WebUserControl1 : System.Web.UI.UserControl
{
public object DataSource { get; set; }
public string Text { get; set; }
protected void Page_Load(object sender, EventArgs e)
{
}
public override void DataBind()
{
// *** there when called, properties are null, why? ***
repeater2.DataSource = DataSource;
repeater2.DataBind();
}
}
This control is in repeater with declarative bounded properties:
<asp:Repeater ID="repeater" runat="server">
<ItemTemplate>
<WebUserControl1 runat="server" DataSource='<%# DataBinder.Eval(Container.DataItem, "levels") %>' Text='<%# DataBinder.Eval(Container.DataItem, "Text") %>' />
</ItemTemplate>
</asp:Repeater>
Now when i call DataBind() on repeater:
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
... data query
repeater.DataSource = items;
repeater.DataBind();
}
}
in overriden control's DataBind() method i don't have properly setted properties DataSource and Text, they are null, why?
If you have only one repeater control in WebUserControl1, it is easier to bind that child repeater control in Repeater.ItemDataBound Event of Parent repeater.
Here is the sample -
ASPX
<asp:Repeater ID="ParentRepeater" runat="server" OnItemDataBound="ParentRepeater_ItemDataBound">
<ItemTemplate>
<asp:Label runat="server" ID="StreetLabel" /><br/>
<asp:Repeater ID="ChildRepeater" runat="server">
<ItemTemplate>
<asp:Label runat="server" ID="FirstNameLabel" />
<asp:Label runat="server" ID="LastNameLabel" />
</ItemTemplate>
</asp:Repeater><hr/>
</ItemTemplate>
</asp:Repeater>
Code Behind
public class Address
{
public int Id { get; set; }
public string Street { get; set; }
public List<User> Users { get; set; }
}
public class User
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
ParentRepeater.DataSource = new List<Address>
{
new Address
{
Id = 1,
Street = "1st Street",
Users = new List<User>()
{
new User {Id = 1, FirstName = "John", LastName = "Doe"},
new User {Id = 1, FirstName = "Marry", LastName = "Doe"}
}
},
new Address
{
Id = 2,
Street = "2nd Street",
Users = new List<User>()
{
new User {Id = 1, FirstName = "Eric", LastName = "Newton"},
new User {Id = 1, FirstName = "John", LastName = "Newton"}
}
}
};
ParentRepeater.DataBind();
}
}
protected void ParentRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
var address = e.Item.DataItem as Address;
var streetLabel = e.Item.FindControl("StreetLabel") as Label;
streetLabel.Text = address.Street;
var repeater = e.Item.FindControl("ChildRepeater") as Repeater;
repeater.ItemDataBound += ChildRepeater_ItemDataBound;
repeater.DataSource = address.Users;
repeater.DataBind();
}
}
protected void ChildRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
var user = e.Item.DataItem as User;
var firstNameLabel = e.Item.FindControl("FirstNameLabel") as Label;
firstNameLabel.Text = user.FirstName;
var lastNameLabel = e.Item.FindControl("LastNameLabel") as Label;
lastNameLabel.Text = user.LastName;
}
}
Solution for Original Question
Delete public override void DataBind() event and bind repeaters2 inside PreRender event.
public partial class WebUserControl1 : System.Web.UI.UserControl
{
protected override void OnPreRender(EventArgs e)
{
repeater2.DataSource = DataSource;
repeater2.DataBind();
base.OnPreRender(e);
}
}
here is the login page that created for you when you create a default application in asp.net and i am trying to understand where does the actually code validating/authenticating the userid and password?, i did not find any code-behind code except this: where does it validating the username and password?
i see the CommandName="Login" but dont find the code....
protected void Page_Load(object sender, EventArgs e)
{
RegisterHyperLink.NavigateUrl = "Register.aspx?ReturnUrl=" + HttpUtility.UrlEncode(Request.QueryString["ReturnUrl"]);
}
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<h2>
Log In
</h2>
<p>
Please enter your username and password.
<asp:HyperLink ID="RegisterHyperLink" runat="server" EnableViewState="false">Register</asp:HyperLink> if you don't have an account.
</p>
<asp:Login ID="LoginUser" runat="server" EnableViewState="false" RenderOuterTable="false">
<LayoutTemplate>
<span class="failureNotification">
<asp:Literal ID="FailureText" runat="server"></asp:Literal>
</span>
<asp:ValidationSummary ID="LoginUserValidationSummary" runat="server" CssClass="failureNotification"
ValidationGroup="LoginUserValidationGroup"/>
<div class="accountInfo">
<fieldset class="login">
<legend>Account Information</legend>
<p>
<asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">Username:</asp:Label>
<asp:TextBox ID="UserName" runat="server" CssClass="textEntry"></asp:TextBox>
<asp:RequiredFieldValidator ID="UserNameRequired" runat="server" ControlToValidate="UserName"
CssClass="failureNotification" ErrorMessage="User Name is required." ToolTip="User Name is required."
ValidationGroup="LoginUserValidationGroup">*</asp:RequiredFieldValidator>
</p>
<p>
<asp:Label ID="PasswordLabel" runat="server" AssociatedControlID="Password">Password:</asp:Label>
<asp:TextBox ID="Password" runat="server" CssClass="passwordEntry" TextMode="Password"></asp:TextBox>
<asp:RequiredFieldValidator ID="PasswordRequired" runat="server" ControlToValidate="Password"
CssClass="failureNotification" ErrorMessage="Password is required." ToolTip="Password is required."
ValidationGroup="LoginUserValidationGroup">*</asp:RequiredFieldValidator>
</p>
<p>
<asp:CheckBox ID="RememberMe" runat="server"/>
<asp:Label ID="RememberMeLabel" runat="server" AssociatedControlID="RememberMe" CssClass="inline">Keep me logged in</asp:Label>
</p>
</fieldset>
<p class="submitButton">
<asp:Button ID="LoginButton" runat="server" CommandName="Login" Text="Log In" ValidationGroup="LoginUserValidationGroup"/>
</p>
</div>
</LayoutTemplate>
</asp:Login>
</asp:Content>
The implement is in the Login.OnBubbleEvent method. For more information, refer to http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.login.onbubbleevent.aspx
Login.OnBubbleEvent as Edward Zhu pointed out is the correct answer. To further the understanding what happens here is the code snippet from System.Web.dll for the event (using Reflector.exe)
protected override bool OnBubbleEvent(object source, EventArgs e)
{
bool flag = false;
if (e is CommandEventArgs)
{
CommandEventArgs args = (CommandEventArgs) e;
if (string.Equals(args.CommandName, LoginButtonCommandName, StringComparison.OrdinalIgnoreCase))
{
this.AttemptLogin();
flag = true;
}
}
return flag;
}
LoginButtonCommandName defaults to "Login"
Pawel
Search in your code for a class that inherits : MembershipProvider
I have this class
public class TsMembershiProvider : MembershipProvider
{
private Dictionary<string, MembershipUser> _Users;
// MembershipProvider Properties
public override string ApplicationName
{
get { throw new NotSupportedException(); }
set { throw new NotSupportedException(); }
}
public override bool EnablePasswordRetrieval
{
get { return true; }
}
public override bool EnablePasswordReset
{
get { return true; }
}
public override int MaxInvalidPasswordAttempts
{
get { throw new NotSupportedException(); }
}
public override int MinRequiredNonAlphanumericCharacters
{
get { return 2; }
}
public override int MinRequiredPasswordLength
{
get { return 5; }
}
public override int PasswordAttemptWindow
{
get { throw new NotSupportedException(); }
}
public override MembershipPasswordFormat PasswordFormat
{
get { throw new NotSupportedException(); }
}
public override string PasswordStrengthRegularExpression
{
get { throw new NotSupportedException(); }
}
public override bool RequiresQuestionAndAnswer
{
get { return false; }
}
public override bool RequiresUniqueEmail
{
get { throw new NotSupportedException(); }
}
// MembershipProvider Methods
public override void Initialize(string name, NameValueCollection config)
{
// Verify that config isn't null
if (config == null)
throw new ArgumentNullException("config");
// Assign the provider a default name if it doesn't have one
if (String.IsNullOrEmpty(name))
name = "TsMembershipProvider";
// Add a default "description" attribute to config if the
// attribute doesn't exist or is empty
if (string.IsNullOrEmpty(config["description"]))
{
config.Add("description", "Membership provider");
}
// Call the base class's Initialize method
base.Initialize(name, config);
// Throw an exception if unrecognized attributes remain
if (config.Count > 0)
{
string attr = config.GetKey(0);
if (!String.IsNullOrEmpty(attr))
throw new ProviderException
("Unrecognized attribute: " + attr);
}
}
public override bool ValidateUser(string username, string password)
{
if (String.IsNullOrEmpty(username) || String.IsNullOrEmpty(password))
return false;
SqlDataReader dr = SqlHelper.ExecuteReader(SqlHelper.ConnString, "spc_UserAuthorization", username, password);
bool ret = dr.HasRows;
return ret;
}
public override MembershipUser GetUser(string username, bool userIsOnline)
{
// Note: This implementation ignores userIsOnline
// Validate input parameters
if (String.IsNullOrEmpty(username))
return null;
// Retrieve the user from the database
MembershipUser user = MU(username, userIsOnline); //userIsOnline = AltEmail - gets alternative email (hvb)
return user;
}
public override MembershipUserCollection GetAllUsers(int pageIndex,
int pageSize, out int totalRecords)
{
// Note: This implementation ignores pageIndex and pageSize,
// and it doesn't sort the MembershipUser objects returned
// Make sure the data source has been loaded
ReadMembershipDataStore();
MembershipUserCollection users =
new MembershipUserCollection();
foreach (KeyValuePair<string, MembershipUser> pair in _Users)
users.Add(pair.Value);
totalRecords = users.Count;
return users;
}
public override int GetNumberOfUsersOnline()
{
throw new NotSupportedException();
}
public override bool ChangePassword(string username, string oldPassword, string newPassword)
{
MembershipUser u = Membership.GetUser(username);
if (u == null || oldPassword != u.GetPassword())
{
return false;
}
if (newPassword.Length < MinRequiredPasswordLength)
{
return false;
}
CharEnumerator chars = newPassword.GetEnumerator();
int nr = 0;
while (chars.MoveNext())
{
if (!Char.IsLetterOrDigit(chars.Current))
nr++;
}
if (MinRequiredNonAlphanumericCharacters < nr)
{
return false;
}
// CALL TO SQL TO CHANGE PASSWORD
return true;
}
public override bool
ChangePasswordQuestionAndAnswer(string username,
string password, string newPasswordQuestion,
string newPasswordAnswer)
{
throw new NotSupportedException();
}
public override MembershipUser CreateUser(string username,
string password, string email, string passwordQuestion,
string passwordAnswer, bool isApproved, object providerUserKey,
out MembershipCreateStatus status)
{
//SOME CODE i DON'T WHANT YOU TO SEE :)
string strStatus = "";
string strUserid = "";
status = (MembershipCreateStatus)Enum.Parse(typeof(MembershipCreateStatus), strStatus, true);
if (status == MembershipCreateStatus.Success)
{
int userid = 0;
try
{
userid = Convert.ToInt32(strUserid);
}
catch
{
status = MembershipCreateStatus.ProviderError;
}
MembershipUser mu = MU(username);
return mu;
}
else
{
return null;
}
}
public override bool DeleteUser(string username,
bool deleteAllRelatedData)
{
throw new NotSupportedException();
}
public override MembershipUserCollection
FindUsersByEmail(string emailToMatch, int pageIndex,
int pageSize, out int totalRecords)
{
throw new NotSupportedException();
}
public override MembershipUserCollection
FindUsersByName(string usernameToMatch, int pageIndex,
int pageSize, out int totalRecords)
{
throw new NotSupportedException();
}
public override string GetPassword(string username, string answer)
{
//GET PASS FROM SQL
return "";
}
public override MembershipUser GetUser(object providerUserKey, bool userIsOnline)
{
string UserName = (string)SqlHelper.ExecuteScalar(SqlHelper.ConnString, CommandType.Text, "select .... WHERE UserID = " + providerUserKey.ToString());
MembershipUser m = MU(UserName, userIsOnline);
return m;
}
public override string ResetPassword(string username,
string answer)
{
throw new NotSupportedException();
}
public override bool UnlockUser(string userName)
{
throw new NotSupportedException();
}
public override void UpdateUser(MembershipUser user)
{
throw new NotSupportedException();
}
// Helper method
private void ReadMembershipDataStore()
{
lock (this)
{
}
}
private MembershipUser MU(string UserName)
{
return MU(UserName, false);
}
private MembershipUser MU(string UserName, bool isOnline)
{
MembershipUser user = null;
//SOME CODE
return user;
}
}
Have you looked in the code behind file? This would be like login.aspx.cs.
For example:
<uc:AdmiralAckbar runat="server" id="myCustomControl">
<Warning SomeAttribute="It's A Trap">
My Data
</Warning>
</uc:AdmiralAckbar>
I'm not sure how to add SomeAttribute. Any ideas?
Code without the attribute is:
private ITemplate warning = null;
[TemplateContainer(typeof(INamingContainer))]
[PersistenceMode(PersistenceMode.InnerProperty)]
public ITemplate Warning
{
get
{
return warning;
}
set
{
warning = value;
}
}
The answer is yes.
For this you should create a type which implements ITemplate interface and add a custom property/properties there (I added property Name in my example); also add a class which inherits from Collection<YourTemplate>.
Here is an example of doing that:
public class TemplateList : Collection<TemplateItem> { }
public class TemplateItem : ITemplate
{
public string Name { get; set; }
public void InstantiateIn(Control container)
{
var div = new HtmlGenericControl("div");
div.InnerText = this.Name;
container.Controls.Add(div);
}
}
and a control itself:
[ParseChildren(true, "Templates"), PersistChildren(false)]
public class TemplateLibrary : Control
{
public TemplateLibrary()
{
Templates = new TemplateList();
}
[PersistenceMode(PersistenceMode.InnerProperty)]
public TemplateList Templates { get; set; }
protected override void RenderChildren(HtmlTextWriter writer)
{
foreach (var item in Templates)
{
item.InstantiateIn(this);
}
base.RenderChildren(writer);
}
}
and finally an example of usage:
<my:TemplateLibrary runat="server">
<my:TemplateItem Name="hello" />
<my:TemplateItem Name="there" />
</my:TemplateLibrary>
BTW, you could also use it as:
<my:TemplateLibrary runat="server">
<Templates>
<my:TemplateItem Name="hello" />
<my:TemplateItem Name="there" />
</Templates>
</my:TemplateLibrary>
the effect will be the same.
I've got a repeater looping through a list of objects that are of different types. I'd like to render the objects differently depending on their type. For this I need some kind of control (since I want to avoid using the code-behind) that has a behavior similar to a switch/case statement. Basically it could look like this:
<xxx:TestType Object='<%# Container.DataItem %>'>
<Case Type="Namespace.ClassX">
<asp:Label ... />
</Case>
<Case Type="Namespace.ClassY">
<asp:TextBox ... />
</Case>
<Default>
<p>Other</p>
</Default>
</xxx:TestType>
I've made web controls before, but this is a rather complex one...
How do I make it support multiple <Case> elements?
Is it possible to implement the <Case Type="..."> elements, or am I limited to attribute-less elements?
I'm guessing I have to make a type for the <Case> elements and somehow specifying it for the main web control?
I'd be grateful for any pointers, links to tutorials, etc!
Alternative
Alternatively, suggest a nicer way of rendering different HTML/ASP.NET controls based on the type of the currently bound object. The first method that popped into my head was this, which I consider (very) ugly:
<asp:PlaceHolder Visible='<%# CheckType(Container, typeof(ClassX)) %>' runat="server">
...
</asp:PlaceHolder>
<asp:PlaceHolder Visible='<%# CheckType(Container, typeof(ClassY)) %>' runat="server">
...
</asp:PlaceHolder>
The MultiView control is the closest thing out-of-the-box in ASP.NET to a C# switch statement.
Look at implementing ITemplate interface
public class Case
{
[PersistenceMode(PersistenceMode.Attribute)]
public string Type { get; set; }
[PersistenceMode(PersistenceMode.InnerDefaultProperty)]
public ITemplate Template { get; set; }
}
public class DeclarativeCase
: CompositeControl
{
[PersistenceMode(PersistenceMode.InnerProperty)]
public List<Case> Cases { get; set; }
[PersistenceMode(PersistenceMode.InnerProperty)]
public ITemplate Default { get; set; }
}
<xxx:DeclarativeCase runat="server" ID="test">
<Cases>
<xxx:Case Type="Namespace.TypeName">
<Template>
<asp:Label ID="Label1" runat="server"></asp:Label>
</Template>
</xxx:Case>
</Cases>
<Default>
<asp:Label ID="Label2" runat="server"></asp:Label>
</Default>
</xxx:DeclarativeCase>
Why don't you ditch the server control and use the C# switch statement. All you need is to wrap it in the code tags.
Another approach is a iteration (for loop). Create an interface with a type property and a render method. Then iterate over the interfaces until you've found the correct type.
I had a similar requirement a while ago and I did something similar to:
[ParseChildren(true, "Templates")]
public class TypedRepeater : CompositeDataBoundControl
{
[
PersistenceMode(PersistenceMode.InnerProperty),
Browsable(false),
MergableProperty(false)
]
public TypedTemplateCollection Templates
{
get;
}
protected TypedTemplate GetTemplate(object dataItem)
{
if (dataItem == null)
{
return null;
}
foreach (TypedTemplate template in Templates)
{
Type itemType = dataItem.GetType();
if (dataItem.IsAssignableFrom(template.Type))
{
return template;
}
}
return null;
}
protected TypedTemplateRepeaterItem CreateItem(int index, object dataItem, bool dataBinding)
{
TypedTemplateRepeaterItem repeaterItem = new TypedTemplateRepeaterItem();
if ((!dataBinding) && (ViewState[string.Format("TemplateIxc_{0}", index)] is int))
{
int _template = (int)ViewState[string.Format("TemplateIxc_{0}", index)];
if ((_template >= 0) && (_template < Templates.Count) && (Templates[_template].ItemTemplate != null))
{
Templates[_template].ItemTemplate.InstantiateIn(repeaterItem);
}
else
{
DefaultTemplate.InstantiateIn(repeaterItem);
}
}
else if (dataBinding)
{
TypedTemplate template = GetTemplate(dataItem);
ITemplate itemTemplate = DefaultTemplate;
if (template != null)
{
itemTemplate = template.ItemTemplate;
ViewState[string.Format("TemplateIxc_{0}", index)] = Templates.IndexOf(template);
}
else
{
ViewState[string.Format("TemplateIxc_{0}", index)] = -1;
}
repeaterItem.DataItem = dataItem;
repeaterItem.DataItemIndex =
repeaterItem.DisplayIndex = index;
itemTemplate.InstantiateIn(repeaterItem);
repeaterItem.DataBind();
repeaterItem.DataItem = null;
}
return repeaterItem;
}
protected override int CreateChildControls(IEnumerable dataSource, bool dataBinding)
{
int count = 0;
if (dataSource != null)
{
foreach (object dataItem in dataSource)
{
TypedTemplateRepeaterItem repeaterItem = CreateItem(count, dataItem, dataBinding);
Controls.Add(repeaterItem);
count++;
}
}
return count;
}
}
where TypedTemplateCollection is a StateManagedCollection of a TypedTemplate class:
[ParseChildren(true, "ItemTemplate")]
public class TypedTemplate
{
public Type Type
{
get { return Type.GetType(TypeName); }
}
[
PersistenceMode(PersistenceMode.Attribute),
Browsable(true),
DefaultValue("")
]
public string TypeName
{
get;
set;
}
[
PersistenceMode(PersistenceMode.InnerProperty),
Browsable(true),
DefaultValue(typeof(ITemplate), null),
TemplateContainer(typeof(TypedTemplateRepeaterItem))
]
public ITemplate ItemTemplate
{
get;
set;
}
}
and TypedTemplateRepeaterItem is:
public class TypedTemplateRepeaterItem : WebControl, INamingContainer, IDataItemContainer
{
#region IDataItemContainer Members
public object DataItem
{
get;
set;
}
public int DataItemIndex
{
get;
set;
}
public int DisplayIndex
{
get;
set;
}
#endregion
}
The MSDN site has a simple clear example of templating and it certainly seems like the way to go in your case.