Solved

Finding datakey in datalist during item_databound event

Posted on 2008-11-02
6
4,146 Views
Last Modified: 2012-08-13
Hi,

I'm trying to get hold of the datakey value of each row in a datalist control. This is the code I'm using:

    Protected Sub dtSmartMenu_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataListItemEventArgs) Handles dtSmartMenu.ItemDataBound
        Dim HyperLink1 As HyperLink = e.Item.FindControl("HyperLink1")
        Dim smartMenuID As Integer = dtSmartMenu.DataKeys(e.Item.ItemIndex)("smartMenuID")
   
           End Sub

---------------------------------------------
That doesn't work though. Can anyone help me to get hold of that value?!

Thanks for help!

Peter
0
Comment
Question by:peternordberg
  • 3
  • 2
6 Comments
 
LVL 11

Expert Comment

by:Salim Fayad
ID: 22862969
You have to get its "Value"

dtSmartMenu.DataKeys(e.Item.ItemIndex).Value

Open in new window

0
 

Author Comment

by:peternordberg
ID: 22863753
Hi, and thanks for answer!

How can I get that value to be assigned to an integer variable? It complains that it can't find the public member for the type Value for integer.

Peter
0
 
LVL 11

Expert Comment

by:Salim Fayad
ID: 22867446
Here is how you convert it to int

CInt(dtSmartMenu.DataKeys(e.Item.ItemIndex).Value)

Open in new window

0
Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

 

Author Comment

by:peternordberg
ID: 22868102
Hi and thatnks for your help!
Yes, I've already tried that, still I get an error that says>
--------------------------
"Missing Member exeption unhandled by user code"
"Couldn't find the public member Vakue for the type Integer."
---------------------------------
This is the code I'm using

Dim smartMenuID As Integer = CInt(dtSmartMenu.DataKeys(e.Item.ItemIndex).Value)
Thanks for help!
 
Peter
0
 
LVL 22

Accepted Solution

by:
prairiedog earned 500 total points
ID: 22868317
Hi peternordberg:
1. DataList is diffrent from GridView as far as DataKeys is concerned. Here is the right syntax for retrieving DataKey value from DataList:
Dim smartMenuID As Integer = CInt(dtSmartMenu.DataKeys.Item.(e.Item.ItemIndex).ToString())   'although without CInt the above will still work because VB.NET will do the conversion for you, it is always a good idea to use explicilty conversion.
2. Header row and Footer row will also considered "Item", and the above code will throw exception error when it is a header row or a footer row. So you need to wrap your code with a row type check like this:

If (e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem) Then
   Dim HyperLink1 As HyperLink = e.Item.FindControl("HyperLink1")
   Dim smartMenuID As Integer = Me.dtSmartMenu.DataKeys.Item(e.Item.ItemIndex)
End If
 
0
 

Author Closing Comment

by:peternordberg
ID: 31512524
Thanks! That worked perfectly!

Peter
0

Featured Post

ScreenConnect 6.0 Free Trial

At ScreenConnect, partner feedback doesn't fall on deaf ears. We collected partner suggestions off of their virtual wish list and transformed them into one game-changing release: ScreenConnect 6.0. Explore all of the extras and enhancements for yourself!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

One of the pain points with developing AJAX, JavaScript, JQuery, and other client-side behaviors is that JavaScript doesn’t allow for cross domain request for pulling content. For example, JavaScript code on www.johnchapman.name could not pull conte…
IntroductionWhile developing web applications, a single page might contain many regions and each region might contain many number of controls with the capability to perform  postback. Many times you might need to perform some action on an ASP.NET po…
Along with being a a promotional video for my three-day Annielytics Dashboard Seminor, this Micro Tutorial is an intro to Google Analytics API data.
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

810 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question