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Why the row value is nothing?

Posted on 2008-10-01
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Last Modified: 2012-05-05
Hi, I'm trying to retrieve the repeater's row at databound time but the row returned nothing:
       Dim row As DataRowView = TryCast(e.Item.DataItem, DataRowView)

Below is the entire code:
Private Sub rptList_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles rptList.ItemDataBound
        Dim imgIcon As Image = CType(e.Item.FindControl("imgIcon"), Image)
        Dim row As DataRowView = TryCast(e.Item.DataItem, DataRowView)
 
End Sub

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Question by:Abdu_Allah
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4 Comments
 
LVL 23

Expert Comment

by:Snarf0001
ID: 22613474
Can you show the code for your databinding?  Are you sure it's a DataRowView being returned?
0
 
LVL 3

Author Comment

by:Abdu_Allah
ID: 22613515
Here is the code of binding:

Dim directory2 As DirectoryInfo = New DirectoryInfo(strPath)
Try
rptList.DataSource = directory2.GetFiles()
rptList.DataBind()
Catch ex As System.UnauthorizedAccessException
Response.Write(" Access Denied.")
Catch ex As System.IO.IOException
Response.Write(" Unknown error: " + ex.Message)
Finally
directory2 = Nothing
End Try
0
 
LVL 23

Accepted Solution

by:
Snarf0001 earned 500 total points
ID: 22613556
Okay, thats exactly the problem.
You'll only get a DataRowView if you're binding with a datatable / dataview.

since you're binding with DirectoryInfo.GetFiles(), which returns an array of FileInfo objects, that's what you need to cast to.
Private Sub rptList_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles rptList.ItemDataBound
        Dim imgIcon As Image = CType(e.Item.FindControl("imgIcon"), Image)
        Dim info As FileInfo = TryCast(e.Item.DataItem, FileInfo)
 
End Sub

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0
 
LVL 20

Expert Comment

by:informaniac
ID: 22613602
TRY THIS

       
If e.Item.ItemType = ListItemType.Item OrElse e.Item.ItemType = ListItemType.AlternatingItem Then

Dim imgIcon As Image = CType(e.Item.FindControl("imgIcon"), Image)
        Dim row As DataRowView = TryCast(e.Item.DataItem, DataRowView)

End If
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