A little embarrassing but,
Public Sub MySub(ByVal row as MyTable1Row)
....
End Sub
Public Sub MySub(ByVal row as MyTable2Row)
....
End Sub
How do I get the following to work without the Select...Case block and the
Ctypes?
Public Sub DoSomething(ByVal row as Datarow)
Select Case row.GetType.Name
Case "MyTable1Row"
MySub(Ctype(row,MyTable1Row))
Case "MyTable2Row"
MySub(Ctype(row,MyTable2Row))
End Select
....
End Sub
I was hoping for something more like this
Public Sub DoSomething(ByVal row as DataRow)
MySub(Ctype(row,row.GetType)
....
End Sub
Thanks,
Pat
--
Pat 4 1223
I think the usual way to do this might be to have the "MySub" method as
overridden members of the MyTable1Row and MyTable2Row classes, so that the
behaviour of "MySub" is encapsulated in the class itself; like this:
public class MyTableRow
Inherits DataRow
Public Overridable Sub MySub ()
End Sub
End Class
public class MyTable1Row
Inherits MyTableRow
Public Overrides Sub MySub ()
' Perform some action
End Sub
End Class
Public Class MyTable2Row
Inherits MyTableRow
Public Overrides Sub MySub ()
' Perform some action
End Sub
End Class
..................
..................
Public Sub Dosomething ( byval theRow as MyTableRow )
theRow.MySub ()
End Sub
"pmcguire" <pm******@discussions.microsoft.com> wrote in message
news:3B**********************************@microsof t.com... A little embarrassing but,
Public Sub MySub(ByVal row as MyTable1Row) ... End Sub
Public Sub MySub(ByVal row as MyTable2Row) ... End Sub
How do I get the following to work without the Select...Case block and the Ctypes?
Public Sub DoSomething(ByVal row as Datarow) Select Case row.GetType.Name Case "MyTable1Row" MySub(Ctype(row,MyTable1Row)) Case "MyTable2Row" MySub(Ctype(row,MyTable2Row)) End Select ... End Sub
I was hoping for something more like this
Public Sub DoSomething(ByVal row as DataRow) MySub(Ctype(row,row.GetType) ... End Sub
Thanks,
Pat -- Pat
Excellent idea. The problem (I think) is then 2 weeks later when I tweak the
structure of the dataset VisualStudio overwrites all my custom coding in the
autogenerated classes. Or maybe there is a way to avoid this...?
Thanks,
Pat
"Robin Tucker" wrote: I think the usual way to do this might be to have the "MySub" method as overridden members of the MyTable1Row and MyTable2Row classes, so that the behaviour of "MySub" is encapsulated in the class itself; like this:
public class MyTableRow Inherits DataRow
Public Overridable Sub MySub () End Sub
End Class
public class MyTable1Row Inherits MyTableRow
Public Overrides Sub MySub () ' Perform some action End Sub End Class
Public Class MyTable2Row Inherits MyTableRow
Public Overrides Sub MySub () ' Perform some action End Sub End Class
.................. ..................
Public Sub Dosomething ( byval theRow as MyTableRow ) theRow.MySub () End Sub
"pmcguire" <pm******@discussions.microsoft.com> wrote in message news:3B**********************************@microsof t.com...A little embarrassing but,
Public Sub MySub(ByVal row as MyTable1Row) ... End Sub
Public Sub MySub(ByVal row as MyTable2Row) ... End Sub
How do I get the following to work without the Select...Case block and the Ctypes?
Public Sub DoSomething(ByVal row as Datarow) Select Case row.GetType.Name Case "MyTable1Row" MySub(Ctype(row,MyTable1Row)) Case "MyTable2Row" MySub(Ctype(row,MyTable2Row)) End Select ... End Sub
I was hoping for something more like this
Public Sub DoSomething(ByVal row as DataRow) MySub(Ctype(row,row.GetType) ... End Sub
Thanks,
Pat -- Pat
This I can't answer as I have never used these autogenerated classes.
Perhaps you could do an experiment and report back to the group ;)
"pmcguire" <pm******@discussions.microsoft.com> wrote in message
news:41**********************************@microsof t.com... Excellent idea. The problem (I think) is then 2 weeks later when I tweak the structure of the dataset VisualStudio overwrites all my custom coding in the autogenerated classes. Or maybe there is a way to avoid this...?
Thanks,
Pat
"Robin Tucker" wrote:
I think the usual way to do this might be to have the "MySub" method as overridden members of the MyTable1Row and MyTable2Row classes, so that the behaviour of "MySub" is encapsulated in the class itself; like this:
public class MyTableRow Inherits DataRow
Public Overridable Sub MySub () End Sub
End Class
public class MyTable1Row Inherits MyTableRow
Public Overrides Sub MySub () ' Perform some action End Sub End Class
Public Class MyTable2Row Inherits MyTableRow
Public Overrides Sub MySub () ' Perform some action End Sub End Class
.................. ..................
Public Sub Dosomething ( byval theRow as MyTableRow ) theRow.MySub () End Sub
"pmcguire" <pm******@discussions.microsoft.com> wrote in message news:3B**********************************@microsof t.com... >A little embarrassing but, > > Public Sub MySub(ByVal row as MyTable1Row) > ... > End Sub > > Public Sub MySub(ByVal row as MyTable2Row) > ... > End Sub > > > How do I get the following to work without the Select...Case block and > the > Ctypes? > > Public Sub DoSomething(ByVal row as Datarow) > Select Case row.GetType.Name > Case "MyTable1Row" > MySub(Ctype(row,MyTable1Row)) > Case "MyTable2Row" > MySub(Ctype(row,MyTable2Row)) > End Select > ... > End Sub > > I was hoping for something more like this > > Public Sub DoSomething(ByVal row as DataRow) > MySub(Ctype(row,row.GetType) > ... > End Sub > > Thanks, > > Pat > -- > Pat
"pmcguire" <pm******@discussions.microsoft.com> schrieb A little embarrassing but,
Public Sub MySub(ByVal row as MyTable1Row) ... End Sub
Public Sub MySub(ByVal row as MyTable2Row) ... End Sub
How do I get the following to work without the Select...Case block and the Ctypes?
Public Sub DoSomething(ByVal row as Datarow) Select Case row.GetType.Name Case "MyTable1Row" MySub(Ctype(row,MyTable1Row)) Case "MyTable2Row" MySub(Ctype(row,MyTable2Row)) End Select ... End Sub
Use "If TypeOf .. Is" instead of comparing strings to avoid misspelled type
names. The compiler can't recognize them.
I was hoping for something more like this
Public Sub DoSomething(ByVal row as DataRow) MySub(Ctype(row,row.GetType) ... End Sub
CType requires a type expression, not a System.Type object because the type
and the call must be resolved at compile time. I don't see a way around
CType/Directcast.
Armin This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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