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PLS HELP!! How to override a default property???
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<blockquote data-quote="neo.pet" data-source="post: 968" data-attributes="member: 465"><p>Hi all,</p><p></p><p>I am unable to derive a new class from ADODB.ConnectionClass. All I want to do is to override the 'Open' and 'Execute' methods but VB.net complains that all methods/properties must be overridden. So I have overridden all except for the default property 'ConnectionString'.</p><p></p><p><span style="font-size: 10px">I realize that VB.Net does not support default properties unless they accept parameters. So how can I override the base default property if it does NOT accept parameters but my derived class must accept parameters?? </span></p><p></p><p>-------------------------------------------------------</p><p>- When I define:</p><p><span style="font-size: 10px"><span style="color: #0000ff">Default</span></span> <span style="font-size: 10px"><span style="color: #0000ff">Public</span></span> <span style="font-size: 10px"><span style="color: #0000ff">Overloads</span></span> <span style="font-size: 10px"><span style="color: #0000ff">Overrides</span></span> <span style="font-size: 10px"><span style="color: #0000ff">Property</span></span><span style="font-size: 10px"> ConnectionString() </span><span style="font-size: 10px"><span style="color: #0000ff">As</span></span> <span style="font-size: 10px"><span style="color: #0000ff">String</span></span></p><p> ==> It complains parameters are required.</p><p></p><p>-------------------------------------------------------</p><p>- When I define:</p><p><span style="font-size: 10px"><span style="color: #0000ff">Default</span></span> <span style="font-size: 10px"><span style="color: #0000ff">Public</span></span> <span style="font-size: 10px"><span style="color: #0000ff">Overloads</span></span> <span style="font-size: 10px"><span style="color: #0000ff">Overrides</span></span> <span style="font-size: 10px"><span style="color: #0000ff">Property</span></span><span style="font-size: 10px"> ConnectionString(<span style="font-size: 10px"><span style="color: #0000ff">ByVal</span></span><span style="font-size: 10px"> index </span><span style="font-size: 10px"><span style="color: #0000ff">As</span></span> <span style="font-size: 10px"><span style="color: #0000ff">Integer</span></span>) </span><span style="font-size: 10px"><span style="color: #0000ff">As</span></span> <span style="font-size: 10px"><span style="color: #0000ff">String</span></span></p><p> ==> It complains that it doesn't override a property in the base class (b/c it accepts parameters)</p><p></p><p>-------------------------------------------------------</p><p>- The following is what I need but I'm not sure how to work around it:</p><p><span style="font-size: 10px"><span style="color: #0000ff">Default Public Overloads Overrides Property ConnectionString(ByVal index As Integer) As String</span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff"> Get</span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff"> ConnectionString = MyBase.ConnectionString</span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff"> End Get</span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff"> Set(ByVal Value As String)</span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff"> MyBase.ConnectionString = Value</span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff"> End Set</span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff">End Property</span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff"></span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff">-------------------------------------------------------</span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff">- Any input would be greatly appreciated!!</span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff"></span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff">thanks,</span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff">fed up </span></span></p><p><span style="font-size: 10px"><span style="color: #0000ff"></span></span></p></blockquote><p></p>
[QUOTE="neo.pet, post: 968, member: 465"] Hi all, I am unable to derive a new class from ADODB.ConnectionClass. All I want to do is to override the 'Open' and 'Execute' methods but VB.net complains that all methods/properties must be overridden. So I have overridden all except for the default property 'ConnectionString'. [size=2]I realize that VB.Net does not support default properties unless they accept parameters. So how can I override the base default property if it does NOT accept parameters but my derived class must accept parameters?? [/size] ------------------------------------------------------- - When I define: [size=2][color=#0000ff]Default[/color][/size][size=2] [/size][size=2][color=#0000ff]Public[/color][/size][size=2] [/size][size=2][color=#0000ff]Overloads[/color][/size][size=2] [/size][size=2][color=#0000ff]Overrides[/color][/size][size=2] [/size][size=2][color=#0000ff]Property[/color][/size][size=2] ConnectionString() [/size][size=2][color=#0000ff]As[/color][/size][size=2] [/size][size=2][color=#0000ff]String[/color][/size] ==> It complains parameters are required. ------------------------------------------------------- - When I define: [size=2][color=#0000ff]Default[/color][/size][size=2] [/size][size=2][color=#0000ff]Public[/color][/size][size=2] [/size][size=2][color=#0000ff]Overloads[/color][/size][size=2] [/size][size=2][color=#0000ff]Overrides[/color][/size][size=2] [/size][size=2][color=#0000ff]Property[/color][/size][size=2] ConnectionString([size=2][color=#0000ff]ByVal[/color][/size][size=2] index [/size][size=2][color=#0000ff]As[/color][/size][size=2] [/size][size=2][color=#0000ff]Integer[/color][/size]) [/size][size=2][color=#0000ff]As[/color][/size][size=2] [/size][size=2][color=#0000ff]String[/color][/size] ==> It complains that it doesn't override a property in the base class (b/c it accepts parameters) ------------------------------------------------------- - The following is what I need but I'm not sure how to work around it: [size=2][color=#0000ff]Default Public Overloads Overrides Property ConnectionString(ByVal index As Integer) As String Get ConnectionString = MyBase.ConnectionString End Get[/color][/size] [size=2][color=#0000ff] Set(ByVal Value As String) MyBase.ConnectionString = Value End Set End Property [/color][/size][size=2][color=#0000ff][/color][/size] [size=2][color=#0000ff]------------------------------------------------------- - Any input would be greatly appreciated!! thanks, fed up [/color][/size] [/QUOTE]
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PLS HELP!! How to override a default property???
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