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Tree view node selection errorI have the code below that I'm using in a tree view to detect what node the user has clicked on. It compiles but on runtime I get a type cast error. I've used this method for both the tool bar and menu and it works fine extending the "handles" property inherent within .net. Isn't the type supposed to be "TreeNode"? Private Sub tvSelectFolder_NodeMouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles tvSelectFolder.NodeMouseClick 'Declare an object of type TreeNode Dim pTreeViewNode As TreeNode 'Now let's find out which tree view node was clicked pTreeViewNode = CType(sender, TreeNode) 'Each item corresponds to a different feature Select Case pTreeViewNode.Name '//Exit the program Case "InboxNode" End Select End Sub End Class Thanks, Adam Adam,
Did you set (as would be done as first if you have a casting problem) set in top of your program or in the options: Option Strict On That helps mostly to find casting errors. Cor Show quoteHide quote "Adam Honek" <AdamHo***@Webmaster2001.freeserve.co.uk> schreef in bericht news:%23X%23pLhPXGHA.3800@TK2MSFTNGP03.phx.gbl... > Hi, > > I have the code below that I'm using in a tree view to detect what node > the user has clicked on. > > It compiles but on runtime I get a type cast error. > > I've used this method for both the tool bar and menu and it works fine > extending the "handles" property inherent within .net. > > Isn't the type supposed to be "TreeNode"? > > > > Private Sub tvSelectFolder_NodeMouseClick(ByVal sender As Object, ByVal e > As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles > tvSelectFolder.NodeMouseClick > > 'Declare an object of type TreeNode > > Dim pTreeViewNode As TreeNode > > 'Now let's find out which tree view node was clicked > > pTreeViewNode = CType(sender, TreeNode) > > > > 'Each item corresponds to a different feature > > Select Case pTreeViewNode.Name > > '//Exit the program > > Case "InboxNode" > > End Select > > End Sub > > End Class > > > > Thanks, > > Adam > > I would guess that the sender argument is actually the TreeView itself
Use e.Node to get the clicked node /claes Show quoteHide quote "Adam Honek" <AdamHo***@Webmaster2001.freeserve.co.uk> wrote in message news:%23X%23pLhPXGHA.3800@TK2MSFTNGP03.phx.gbl... > Hi, > > I have the code below that I'm using in a tree view to detect what node > the user has clicked on. > > It compiles but on runtime I get a type cast error. > > I've used this method for both the tool bar and menu and it works fine > extending the "handles" property inherent within .net. > > Isn't the type supposed to be "TreeNode"? > > > > Private Sub tvSelectFolder_NodeMouseClick(ByVal sender As Object, ByVal e > As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles > tvSelectFolder.NodeMouseClick > > 'Declare an object of type TreeNode > > Dim pTreeViewNode As TreeNode > > 'Now let's find out which tree view node was clicked > > pTreeViewNode = CType(sender, TreeNode) > > > > 'Each item corresponds to a different feature > > Select Case pTreeViewNode.Name > > '//Exit the program > > Case "InboxNode" > > End Select > > End Sub > > End Class > > > > Thanks, > > Adam > > Thanks, this does the trick using the "e" argument.
BTW, Option Strict was off. Adam Show quoteHide quote "Claes Bergefall" <louplou@nospam.nospam> wrote in message news:ODsVvyWXGHA.4976@TK2MSFTNGP03.phx.gbl... >I would guess that the sender argument is actually the TreeView itself > Use e.Node to get the clicked node > > /claes > > "Adam Honek" <AdamHo***@Webmaster2001.freeserve.co.uk> wrote in message > news:%23X%23pLhPXGHA.3800@TK2MSFTNGP03.phx.gbl... >> Hi, >> >> I have the code below that I'm using in a tree view to detect what node >> the user has clicked on. >> >> It compiles but on runtime I get a type cast error. >> >> I've used this method for both the tool bar and menu and it works fine >> extending the "handles" property inherent within .net. >> >> Isn't the type supposed to be "TreeNode"? >> >> >> >> Private Sub tvSelectFolder_NodeMouseClick(ByVal sender As Object, ByVal e >> As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles >> tvSelectFolder.NodeMouseClick >> >> 'Declare an object of type TreeNode >> >> Dim pTreeViewNode As TreeNode >> >> 'Now let's find out which tree view node was clicked >> >> pTreeViewNode = CType(sender, TreeNode) >> >> >> >> 'Each item corresponds to a different feature >> >> Select Case pTreeViewNode.Name >> >> '//Exit the program >> >> Case "InboxNode" >> >> End Select >> >> End Sub >> >> End Class >> >> >> >> Thanks, >> >> Adam >> >> > > 
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