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Zone: > NEWSGROUP > Asp.Net Forum > general_asp.net.master_pages_themes_and_navigation_controls Tags:
Item Type: NewsGroup Date Entered: 2/26/2008 4:53:17 PM Date Modified: Subscribers: 0 Subscribe Alert
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Skip_Frog
Asp.Net User
Validation with a Tree View/Form View2/26/2008 4:53:17 PM

0

Hi All,

I have a tree view driving a Form View. The question is how to enforce validation when the Tree View control does not have a CausesValidation property. How do stop the user from changing records before the edit is complete or the record has been validated?

Thanks,

Skip 

 
Skip_Frog
Asp.Net User
Re: Validation with a Tree View/Form View2/26/2008 6:51:38 PM

0

Okay I have made some progress. I have changed the code to now set the select parameter on the SelectedNodeChanged event and look if the page is valid.

Strange problem now is that for some reason after the page becomes invalid the form view stops reponding to the tree view clicks even after the page becomes valid again. It is like the form view loses sync from the treeview.

Ideas?

 

 Protected Sub TreeView1_SelectedNodeChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TreeView1.SelectedNodeChanged

        Page.Validate()

        If Page.IsValid Then
            Me.SqlDataSourceTaskDetails.SelectParameters.Item("Id").DefaultValue = TreeView1.SelectedValue
            Me.FormView1.DataBind()
        End If

    End Sub
 
Skip_Frog
Asp.Net User
Re: Validation with a Tree View/Form View2/26/2008 7:24:10 PM

0

After some further examination the SelectedNodeChanged event was not firing after the page became invalid. By adding the Else to set the node selection to False fixed the problem.

 

Protected Sub TreeView1_SelectedNodeChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TreeView1.SelectedNodeChanged

        Page.Validate()

        If Page.IsValid Then
            Me.SqlDataSourceTaskDetails.SelectParameters.Item("Id").DefaultValue = TreeView1.SelectedValue
        Else
            TreeView1.SelectedNode.Selected = False
        End If

    End Sub
 
3 Items, 1 Pages 1 |< << Go >> >|


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