The quick fix is:

Put this in your page load  Page.Form.Attributes.Add(“enctype”, “multipart/form-data”);

Put a trigger to your update panel : <Triggers>
                <asp:PostBackTrigger ControlID=”btnSubmit” />
            </Triggers>

Put your upload control : <asp:AsyncFileUpload ID=”fuImage” runat=”server” UploaderStyle=”Modern” Style=”margin-left: 100px;”
                                                onchange=”return ImageValidate()” />

Thanks

Using Linq Let keyword :

Old way :
var cheapCategories = from cat in Categories
where cat.Products.Average(p => p.Price) p.Price) };

New Way :
var cheapCategories = from cat in Categories
let AvgPrice = cat.Products.Average(p => p.Price)
where AvgPrice < 100
select new { cat.Name, AvgPrice };
Its code is pretty straight forward to the point!

An HTTP module is an assembly that is called on every request that is made to your application. HTTP modules are called as part of the ASP.NET request pipeline and have access to life-cycle events throughout the request. HTTP modules let you examine incoming and outgoing requests and take action based on the request.

Typical uses for custom HTTP handlers include the following:

• RSS feeds   To create an RSS feed for a Web site, you can create a handler that emits RSS-formatted XML. You can then bind a file name extension such as .rss to the custom handler. When users send a request to your site that ends in .rss, ASP.NET calls your handler to process the request.
• Image server   If you want a Web application to serve images in a variety of sizes, you can write a custom handler to resize images and then send them to the user as the handler’s response.

Typical uses for HTTP modules include the following:

• Security   Because you can examine incoming requests, an HTTP module can perform custom authentication or other security checks before the requested page, XML Web service, or handler is called. In Internet Information Services (IIS) 7.0 running in Integrated mode, you can extend forms authentication to all content types in an application.
• Statistics and logging   Because HTTP modules are called on every request, you can gather request statistics and log information in a centralized module, instead of in individual pages.
• Custom headers or footers   Because you can modify the outgoing response, you can insert content such as custom header information into every page or XML Web service response.

Stack Trace would read like : “[MetadataException: Unable to load the specified metadata resource.] System.Data.Metadata.Edm.MetadataArtifactLoaderCompositeResource.LoadResources(String assemblyName, String resourceName, ICollection`1 uriRegistry, MetadataArtifactAssemblyResolver resolver) +2510308 System.Data.Metadata.Edm.MetadataArtifactLoaderCompositeResource.CreateResourceLoader(String path, ExtensionCheck extensionCheck, String validExtension, ICollection`1 uriRegistry, MetadataArtifactAssemblyResolver resolver) +180 System.Data.Metadata.Edm.MetadataArtifactLoader.Create(String path, ExtensionCheck extensionCheck, String validExtension, ICollection`1 uriRegistry, MetadataArtifactAssemblyResolver resolver) +8564268 System.Data.Metadata.Edm.MetadataCache.SplitPaths(String paths) +271 System.Data.Common.Utils.<>c__DisplayClass2.<Evaluate>b__0() +19 System.Data.Common.Utils.Result.GetValue() +100 System.Data.Common.Utils.Memoizer`2.Evaluate(TArg arg) +181 System.Data.EntityClient.EntityConnection.GetMetadataWorkspace(Boolean initializeAllCollections) +292 System.Data.Objects.ObjectContext.RetrieveMetadataWorkspaceFromConnection() +29 System.Data.Objects.ObjectContext..ctor(EntityConnection connection, Boolean isConnectionConstructor) +205 System.Data.Objects.ObjectContext..ctor(String connectionString, String defaultContainerName) +27 eLMSDAL.eLMSEntities..ctor() in F:\Users\Machine\Documents\Visual Studio 2010\Projects\eLMS\eLMSDAL\eLMSModel.Designer.cs:34 eLMSDAL.UserDAL.UserInsert(String FirstName, String MiddleName, String LastName, DateTime DOB, String Address1, String Address2, String City1, String City2, String State1, String State2, String Country1, String Country2, String ZipCode1, String ZipCode2, String Email, String Password, String Mobile, String Resume, Boolean Status, DateTime CreatedDateTime, DateTime UpdatedDateTime, String UserRole) in F:\Users\Machine\Documents\Visual Studio 2010\Projects\eLMS\eLMSDAL\UserDAL.cs:13 eLMSBLL.UserBLL.Save(ArrayList& validationErrors) in F:\Users\Machine\Documents\Visual Studio 2010\Projects\eLMS\eLMSBLL\UserBLL.cs:42 UserRegistration.btnSubmit_Click(Object sender, EventArgs e) in e:\MyWork\eLMS\UserRegistration.aspx.cs:44 System.Web.UI.WebControls.Button.OnClick(EventArgs e) +118 System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +112 System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563″
After wrecking my head for about 1 hour, i got the solution.

Please make sure you update the app.config file in (probably in Data Access Layer) and web.config (Probably be in Presentation layer)

App.config and web.config must work in harmony.

hope this help someone!

I have been planning to do it for quite some time, happy atleast i completed it.

<asp:DataList ID="dlContacts" runat="server">
<ItemTemplate>

<!-- Add your Item Template Here -->

</ItemTemplate>
<FooterTemplate>
<asp:Label ID="lblEmpty" Text="no result" runat="server"
     Visible='<%#bool.Parse((dlContacts.Items.Count==0).ToString())%>'>
</asp:Label>
</FooterTemplate>
</asp:DataList>

For GridView:

 <EmptyDataTemplate>
  <table border="0px" cellpadding="5" cellspacing="5">
   <tr><td>
       Error Message here!
      </td>
   </tr>
  </table>
 </EmptyDataTemplate>
 <EmptyDataRowStyle CssClass="empty" ForeColor="Red" />

SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = ‘P’ AND category = 0 ORDER BY [name])

WHILE @name is not null
BEGIN
SELECT @SQL = ‘DROP PROCEDURE [dbo].[' + RTRIM(@name) +']‘
EXEC (@SQL)
PRINT ‘Dropped Procedure: ‘ + @name
SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = ‘P’ AND category = 0 AND [name] > @name ORDER BY [name])
END
GO

/* Drop all views */
DECLARE @name VARCHAR(128)
DECLARE @SQL VARCHAR(254)

SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = ‘V’ AND category = 0 ORDER BY [name])

WHILE @name IS NOT NULL
BEGIN
SELECT @SQL = ‘DROP VIEW [dbo].[' + RTRIM(@name) +']‘
EXEC (@SQL)
PRINT ‘Dropped View: ‘ + @name
SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = ‘V’ AND category = 0 AND [name] > @name ORDER BY [name])
END
GO

/* Drop all functions */
DECLARE @name VARCHAR(128)
DECLARE @SQL VARCHAR(254)

SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] IN (N’FN’, N’IF’, N’TF’, N’FS’, N’FT’) AND category = 0 ORDER BY [name])

WHILE @name IS NOT NULL
BEGIN
SELECT @SQL = ‘DROP FUNCTION [dbo].[' + RTRIM(@name) +']‘
EXEC (@SQL)
PRINT ‘Dropped Function: ‘ + @name
SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] IN (N’FN’, N’IF’, N’TF’, N’FS’, N’FT’) AND category = 0 AND [name] > @name ORDER BY [name])
END
GO

/* Drop all Foreign Key constraints */
DECLARE @name VARCHAR(128)
DECLARE @constraint VARCHAR(254)
DECLARE @SQL VARCHAR(254)

SELECT @name = (SELECT TOP 1 TABLE_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = ‘FOREIGN KEY’ ORDER BY TABLE_NAME)

WHILE @name is not null
BEGIN
SELECT @constraint = (SELECT TOP 1 CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = ‘FOREIGN KEY’ AND TABLE_NAME = @name ORDER BY CONSTRAINT_NAME)
WHILE @constraint IS NOT NULL
BEGIN
SELECT @SQL = ‘ALTER TABLE [dbo].[' + RTRIM(@name) +'] DROP CONSTRAINT [' + RTRIM(@constraint) +']‘
EXEC (@SQL)
PRINT ‘Dropped FK Constraint: ‘ + @constraint + ‘ on ‘ + @name
SELECT @constraint = (SELECT TOP 1 CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = ‘FOREIGN KEY’ AND CONSTRAINT_NAME <> @constraint AND TABLE_NAME = @name ORDER BY CONSTRAINT_NAME)
END
SELECT @name = (SELECT TOP 1 TABLE_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = ‘FOREIGN KEY’ ORDER BY TABLE_NAME)
END
GO

/* Drop all Primary Key constraints */
DECLARE @name VARCHAR(128)
DECLARE @constraint VARCHAR(254)
DECLARE @SQL VARCHAR(254)

SELECT @name = (SELECT TOP 1 TABLE_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = ‘PRIMARY KEY’ ORDER BY TABLE_NAME)

WHILE @name IS NOT NULL
BEGIN
SELECT @constraint = (SELECT TOP 1 CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = ‘PRIMARY KEY’ AND TABLE_NAME = @name ORDER BY CONSTRAINT_NAME)
WHILE @constraint is not null
BEGIN
SELECT @SQL = ‘ALTER TABLE [dbo].[' + RTRIM(@name) +'] DROP CONSTRAINT [' + RTRIM(@constraint)+']‘
EXEC (@SQL)
PRINT ‘Dropped PK Constraint: ‘ + @constraint + ‘ on ‘ + @name
SELECT @constraint = (SELECT TOP 1 CONSTRAINT_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = ‘PRIMARY KEY’ AND CONSTRAINT_NAME <> @constraint AND TABLE_NAME = @name ORDER BY CONSTRAINT_NAME)
END
SELECT @name = (SELECT TOP 1 TABLE_NAME FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS WHERE constraint_catalog=DB_NAME() AND CONSTRAINT_TYPE = ‘PRIMARY KEY’ ORDER BY TABLE_NAME)
END
GO

/* Drop all tables */
DECLARE @name VARCHAR(128)
DECLARE @SQL VARCHAR(254)

SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = ‘U’ AND category = 0 ORDER BY [name])

WHILE @name IS NOT NULL
BEGIN
SELECT @SQL = ‘DROP TABLE [dbo].[' + RTRIM(@name) +']‘
EXEC (@SQL)
PRINT ‘Dropped Table: ‘ + @name
SELECT @name = (SELECT TOP 1 [name] FROM sysobjects WHERE [type] = ‘U’ AND category = 0 AND [name] > @name ORDER BY [name])
END
GO