Looping round a datagrid

[ggeorgiou01]

Hi all,

I have a datagrid and i have a itemdatabound event on that datagrid. What i want to do is in the itemdatabound event i want to loop round every single row, and place some code against it...

How do i loop round a datagrid ???

Many Thanks,

George

 

[ca8msm]

Why do you want to do this? It seems to me like a bit of a waste of time to loop through the datagrid everytime a item is bound to the grid.


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[ggeorgiou01]

Hi Thanks for replying,

I want to do this because, i have an edit hyperlink in and options column... and basically if the RequestType field is either Amend or Add then i want to show the edit hyperlink, and if the RequestType field is Delete i DONT want to show the edit hyperlink...

Many Thanks,

George

 

[ca8msm]

But why do you want to loop through the DataGrid every time the ItemDataBound event fires (this means that you would be showing/hiding each row's hyperlink every time a row was bound)? Surely all you need to do is for each item that is data bound, set the visibility of the corresponding hyperlink...


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[ggeorgiou01]

Thanks for your help...

I am relativly new too .net and have only been using it for a couple of months... Does anybody know of a website which could send me in the right direction of how to do this ???

Many Thanks,

George

 

[ca8msm]

Yes, try reading the following article (there's 18 parts to it so it's a fair amount of reading but it's an excellent series of articles on the DataGrid control)

http://aspnet.4guysfromrolla.com/articles/040502-1.aspx

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[ggeorgiou01]

Thank you for your help - you've been a great help - cheers !

Many Thanks,

George

 

[checkai]

The ItemDataBound event is basically a run through each row that is bound, including headers/footers...here's sample code that does some conditional formatting like you're talking about...

Private Sub dgrSearch_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles dgrSearch.ItemDataBound
    If e.Item.ItemType = ListItemType.Item Or _
       e.Item.ItemType = ListItemType.AlternatingItem Then

      e.Item.Attributes.Add("onmouseover", "this.style.cursor='default'; this.style.backgroundColor=""#C2B9A2""")
      e.Item.Attributes.Add("onmouseout", "this.style.backgroundColor=""#ECE9D8"";")

      Dim lbtn As LinkButton
      lbtn = e.Item.FindControl("lbtnGo")
      If e.Item.DataItem(2) = "1" Then
        lbtn.Font.Strikeout = True
        lbtn.Attributes.Add("onclick", "javascript:alert('This is a closed client!\nTo create a budget please re-open the client and the project that needs a budget.');return false;")
      ElseIf e.Item.DataItem(3) = "1" Then
        lbtn.Attributes.Add("onclick", "javascript:alert('This is a suspended client!\n To create a budget please un-suspend the client and the project that needs a budget.');return false;")
      Else
        lbtn.Attributes.Add("onclick", "javascript:window.location.href='wfrmSearch.aspx?CID=" & CStr(e.Item.DataItem(0)) & "&CName=" & Replace(Replace(CStr(e.Item.DataItem(1)), "'", "\'"), "&", "31448z") & "';return false;")
      End If
      lbtn.Text = e.Item.DataItem(1)
    End If
  End Sub

this gives different attributes to a link button within the datagrid depending on a dataItem field...

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