Want to bind a gridview?

var categories = category.All();
gvList.DataSource = categories;
gvList.DataBind();

Boom. Done.

<pre lang="csharp" line="1">
int iLineID = 1;
category delCat = category.SingleOrDefault(x => x.id == iLineID);
delCat.Delete();

Too easy right?

What about adding a new record?

category newCat = new category();
newCat.name = "Dummy category name";
newCat.Add();

How easy is that? Go grab SubSonic now!

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As an example I had a gridview which had a different background for alternating rows.

<AlternatingRowStyle CssClass="odd" /></code>

And my CSS was something like

.odd { background-image: url(../graphics/tealbg.gif); }

The Solution

The easy (and maybe a little messy) way to solve this is to force the page to use IE7 compatibility. You can do this by adding the following to your tag.

<meta http-equiv="X-UA-Compatible" content="IE=7" />

Note: The above meta tag MUST appear before any link tags (stylesheet includes for example)

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1. If you are using an IDE then you need to create a new project and add a LoginPage.aspx page. Switch to html view and add the following code inside the tag of you LoginPage.aspx page.

<h2> <font face="Times New Roman">Login Credentials</font> </h2>
<table> <tr>
<td>User Name :</td>
<td><input id="CUserName" type="text" runat="server" NAME="CUserName"></td>
<td><ASP:RequiredFieldValidator ControlToValidate="CUserName" Display="Static" ErrorMessage="*" runat="server" ID="VUserName" /></td></tr>
<tr>
<td>Password:</td>
<td><input id="CUserPass" type="password" runat="server" NAME="CUserPass"></td>
<td><ASP:RequiredFieldValidator ControlToValidate="CUserPass" Display="Static" ErrorMessage="*" runat="server" ID="VUserPass" /></td> </tr>
</table>
<input type="submit" Value="Login" runat="server" ID="cmdLogin" NAME="cmdLogin">
</p>
<asp:Label id="lblMsg" ForeColor="red" FontName="Times New Roman" FontSize="12" runat="server"/>

2. Now, change the authentication in your web.config file to and modify the authentication parameters as given below:

<authorization>
<allow users="*" />
<deny users="?" />
</authorization>

3. Now, browse the virtual directory in Internet Information Services (IIS), right click on it to access the properties. Move to security tab & click on edit to check Anonymous access option.

4. On your IDE change the view mode to code view for the LoginPage.aspx page and add the following code to it. Refer to Point 4 of Code Event Handler at http://support.microsoft.com/kb/308157

Provide your own coding for authenticating the username & password

if CUserName.Value = "AAAAAAA" and CUserPass.Value = "BBBBBBBB" Then
FormsAuthentication.RedirectFromLoginPage(CUserName.Value , True)
else
Response.Redirect("LoginPage.aspx" , True)
End if
End Sub

5. Create a new page and name it as DefaultPage.aspx and add the following to the html view of the page.

<table border="0">
<tr><-td>http://ServerName/FormsAuth/SecuredFolder/AnyFile.doc</td>
<td><-asp:Button id="SendFile" runat="server" Text="Send File"></asp:Button></td>
</tr>
</table>

Now, switch to code view for this page & add the following lines

Private Sub Button_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button.Click FormsAuthentication.SignOut()
Response.Redirect("LoginPage.aspx" , True)
End Sub
Private Sub SendFile_Click( ByVal sender As System.Object , ByVal e As System.EventArgs ) Handles SendFile.Click
Response.ContentType = "application/msword"
Response.Clear()
Response.TransmitFile("SecuredFolderAnyFile.doc") ‘Create a SecuredFolder in Virtual Directory & add “AnyFile.doc” to it
Response.End()
End Sub

Why I used a button instead of a hyperlink is because in case of hyperlink the file will be cached and even if you change the contents of the file, the old file will be displayed. A button will prevent this.

6. Protect the SecuredFolder and ensure that you have granted the READ permission to the Network service or ASPNET. Run your project and try what happens when you try to paste the url of the file and then access it. You will notice a Login page instead of the file.

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The GridView fired event PageIndexChanging which wasn’t handled

To setup paging with Gridviews, you also need to set the page index property to the new page that you wish to view. Funny enough, this is extremely easy to do. See below for a code example written in C#.

The ASPX page

<asp:GridView ID="gvList" runat="server" AutoGenerateColumns="true" AllowPaging="true" PageSize="10" OnPageIndexChanging="gvList_PageIndexChanging">

and the C# code

    protected void gvList_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        bindGrid();

        gvList.PageIndex = e.NewPageIndex;
        gvList.DataBind();
    }

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