ASP.Net Problem with Linkbutton commandargument

[gasmith]

I am trying to send command arguments when a linkbutton is clicked. I am having no problem sending a string as follows:

commandargument="Some String"

and I have no problems sending a bound value scuh as:

commandargument=<%# DataBinder.Eval(Container.DataItem, "SOME_VALUE")%>

Where I have a problem is in my desire to combine the two. I want to concatenate a string with the bound value. I continually get tag not properly formed errors or the binding string itself is returned. I have tried single quotes, double quotes, combinations of the two as follows:

commandargument="Some String" + <%# DataBinder.Eval(Container.DataItem, "SOME_VALUE")%>

commandargument="Some String"<%# DataBinder.Eval(Container.DataItem, 'SOME_VALUE')%>

commandargument='Some String<%# DataBinder.Eval(Container.DataItem, "SOME_VALUE")%>'

commandargument="Some String<%# DataBinder.Eval(Container.DataItem, "SOME_VALUE")%>"

CAN THIS BE DONE??

[Lord_Rat]

It can be done, but it has to be done in the <script runat=server> tags or in the code behind.

You cannot do it in the aspx file directly.

Do the AddEventHandler method.

Optionally, you can (if this a datagrid or datalist) set a datakeys on the datagrid or datalist. Then, use onEditCommand and then in the datagrid tag, onEditCommand="someCommand"

In the someCommand, use sender.datakeys(e.item.itemindex) to retreive your key value from the data grid. Once done, jump to the appropriate method that handles the event.

[gasmith]

I found a solution to my problem. I merely had to add the string I wanted to concatenate inside the script tags as follows:

commandargument=<%# "STRING WITH DELIMITERS" & DataBinder.Eval(Container.DataItem, "SOME_VALUE" )%>

This allows me to pass a string with delimters, the last items of which is the value of the binding. I can then parse the string.

[Lord_Rat]

Note taken. Thanks for the follow up

[jesus4u]

Question?

Looks like you guys know what you are doing so here goes-

Why am I not getting data in the DataKeys collection?

    Private Sub DataList1_ItemCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataListCommandEventArgs) Handles DataList1.ItemCommand
        Dim lblLabel As Label
        Dim intID
        Dim strLabelID As String
        '---retrieves the key for the row---
        intID = DataList1.DataKeys(e.Item.ItemIndex)
        '---find the label control containing the id
        lblLabel = CType(e.Item.FindControl("lblID"), Label)
        strLabelID = lblLabel.Text
        Dim v As New IntranetVariables()
        Response.Redirect _
            (v.url_EmployeeAnnouncements_Detail & "?ex=" & strLabelID, True)
    End Sub

[Lethal]

Did you remeber to set the DataKeys property on the grid?

[jesus4u]

you are right! That's what was missing. But the strange thing I don't understand is why this example doesn't have to set it on the page and it works! I used this example to do my work.

http://www.ondotnet.com/pub/a/dotnet.../datalist.html