Data Grid hyperlink or Link button column

[Dotnetdeveloper06]

Hi I have doubt regarding Datagrid hyperlink column. Actually i will get my hyperlink url Dynamically in program when user selects items from dropdown boxes.so my URl will be something like this "\\servername\directoryname\Dropdownlist1.selecteditemvalue\variable\Dropdownlist2.selectedvaule" i m not getting how to dynamically set the navigate url to the hyperlink column in datagrid please help me hope its not confusing Thanks in advance Dotnetdeveloper06

[Javier Lozano]

could you explain a little bit better? ~Javier Lozano

[Dotnetdeveloper06]

Hi the application goes this way: I have to develop intranet application in such away that user can view PDF files in some folder in some server on the web page. For that PDF files, i have to get url dynamilcally. Actually i have 3 dropdownboxes RID,F,JN and BUtton.so when user selectes items in dropdownbox and click button he/she will get RID depending on selection condition. which will be dispalyed in datagrid. so inorder to open the PDFfile i need URL. so i will get URL depending on wat he selects in dropdownlist selections "\\servername\directoryname\F\variable\RID.PDf" AS i have used Datagrid to display RID from database so i used hyperlink as my next column.so now i have to get URLs for that RID in datagrid's first column. Hope u got . i tried to expalin. PLease help me. if u did not get i will try to exaplain again Thanks in adavance

[Javier Lozano]

Two questions: 1) Why are you using a datagrid for this? 2) What does the page look like? ~Javier Lozano

[Dotnetdeveloper06]

I m using datagrid b'coz i will get selected reportid vaules from Database on to page and they are dynamicall. and i cannot fix there vaule by using textbox or other contols. do u have any other to implement? please let me know thanks

[Javier Lozano]

What about a repeater? Is there a particular way your data needs too look like? ~Javier Lozano

[rwestgraham]

Use the DataGrid_ItemDataBound event to configure the hyperlinks. The ItemDataBound event is raised every time a new rtow is added to a datagrid. You can access all the cells and/or embedded controls in the current row and use their values to concatenate a url. Example: Private Sub DataGrid1_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles DataGrid1.ItemDataBound Dim dgItem As DataGridItem Dim hlMyLink As HyperLink If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then dgItem = CType(e.Item, DataGridItem) hlMyLink = CType(dgItem.FindControl("hlMyLink"), HyperLink) 'Read other cells or controls here to get url elements hlMyLink.NavigateUrl = End If End Sub

[jinnyb]

Solution that Mr.rwestgraham has given will defineitely help u out but for that u will have to bind the datagrid on every post back Hope u got the solution that i have given Bi JINNY Patel Neelesh A

[Dotnetdeveloper06]

Hi Thanks to all for ur replies. but i m getting this error when i m trying to run the app "Object reference not set to an instance of an object" and it showing at "Line 120: lMyLink.NavigateUrl = "\\aflarchive2\aflreports\" + DDLJN.SelectedValue + "\20050413\AFL" + DDLRID.SelectedValue" here is the code i mplemented Private Sub DataGrid2_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles DataGrid2.ItemDataBound Dim dgItem As DataGridItem Dim hlMyLink As HyperLink If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then dgItem = CType(e.Item, DataGridItem) hlMyLink = CType(dgItem.FindControl("hlMyLink"), HyperLink) 'Read other cells or controls here to get url elements 'Dim Str As String = "\\aflarchive2\aflreports\" + DDLJN.SelectedValue + "\20050413\AFL" + DDLRID.SelectedValue hlMyLink.NavigateUrl = "\\aflarchive2\aflreports\" + DDLJN.SelectedValue + "\20050413\AFL" + DDLRID.SelectedValue End If Can u please help me how to fix it . Tahnku very much Dotnetprogramer

[rwestgraham]

The ID of the Hyperlink control in the datagrid must match the string you are searching on in the FindControl method.