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dotnet windows forms controls : PropertyGrid - an object instead of a TypeConverter typeof()?
Hi;
I have a property grid where I need to pass it an object with N properties in it that are each an enumeration (but not an enum). These properties and they enumerated values are read from a database - so we don't know beforehand how many there will be and we do not know beforehand what their enumerated values are. All of the examples for handling something like this show creating a class that implements TypeConverter and then passing that class. But we do not know what the choices are and we do not know how many of these properties we will have. If this was done by passing an object that implements TypeConverter this would be a piece of cake - is there a way to do that? -- thanks - dave david_at_windward_dot_net http://www.windwardreports.com Cubicle Wars - http://www.windwardreports.com/film.htm
What we have is a list of values and an int for the present value. The list
of values is a 0-based array of strings. So if I use the actual value I will get 0, 1, 2, etc. When I want "dave", "fred", etc... -- thanks - dave david_at_windward_dot_net http://www.windwardreports.com Cubicle Wars - http://www.windwardreports.com/film.htm [quoted text, click to view] "AlexS" wrote:
> If you set such object to grid.SelectedObject - what exactly you miss in the > final display? Do you miss any properties? > > > "David Thielen" <thielen@nospam.nospam> wrote in message > news:3EF58EC0-7985-4C25-A610-AD7D1E9B5F0E@microsoft.com... > > Hi; > > > > I have a property grid where I need to pass it an object with N properties > > in it that are each an enumeration (but not an enum). These properties and > > they enumerated values are read from a database - so we don't know > > beforehand > > how many there will be and we do not know beforehand what their enumerated > > values are. > > > > All of the examples for handling something like this show creating a class > > that implements TypeConverter and then passing that class. But we do not > > know > > what the choices are and we do not know how many of these properties we > > will > > have. > > > > If this was done by passing an object that implements TypeConverter this > > would be a piece of cake - is there a way to do that? > > > > -- > > thanks - dave > > david_at_windward_dot_net > > http://www.windwardreports.com > > > > Cubicle Wars - http://www.windwardreports.com/film.htm > > > > > > > >
If you set such object to grid.SelectedObject - what exactly you miss in the
final display? Do you miss any properties? [quoted text, click to view] "David Thielen" <thielen@nospam.nospam> wrote in message news:3EF58EC0-7985-4C25-A610-AD7D1E9B5F0E@microsoft.com... > Hi; > > I have a property grid where I need to pass it an object with N properties > in it that are each an enumeration (but not an enum). These properties and > they enumerated values are read from a database - so we don't know > beforehand > how many there will be and we do not know beforehand what their enumerated > values are. > > All of the examples for handling something like this show creating a class > that implements TypeConverter and then passing that class. But we do not > know > what the choices are and we do not know how many of these properties we > will > have. > > If this was done by passing an object that implements TypeConverter this > would be a piece of cake - is there a way to do that? > > -- > thanks - dave > david_at_windward_dot_net > http://www.windwardreports.com > > Cubicle Wars - http://www.windwardreports.com/film.htm > > >
Then probably you'll be better off using DataGridView control, which allows
custom formatting of displayed values. PropertyGrid shows properties as is. You can add another property to your class, returning string for current int, so you will see both values - maybe that'll help [quoted text, click to view] "David Thielen" <thielen@nospam.nospam> wrote in message news:DE4D7347-A993-43D5-A3F7-A438BEBCD882@microsoft.com... > What we have is a list of values and an int for the present value. The > list > of values is a 0-based array of strings. So if I use the actual value I > will > get 0, 1, 2, etc. When I want "dave", "fred", etc... > > -- > thanks - dave > david_at_windward_dot_net > http://www.windwardreports.com > > Cubicle Wars - http://www.windwardreports.com/film.htm > > > > > "AlexS" wrote: > >> If you set such object to grid.SelectedObject - what exactly you miss in >> the >> final display? Do you miss any properties? >> >> >> "David Thielen" <thielen@nospam.nospam> wrote in message >> news:3EF58EC0-7985-4C25-A610-AD7D1E9B5F0E@microsoft.com... >> > Hi; >> > >> > I have a property grid where I need to pass it an object with N >> > properties >> > in it that are each an enumeration (but not an enum). These properties >> > and >> > they enumerated values are read from a database - so we don't know >> > beforehand >> > how many there will be and we do not know beforehand what their >> > enumerated >> > values are. >> > >> > All of the examples for handling something like this show creating a >> > class >> > that implements TypeConverter and then passing that class. But we do >> > not >> > know >> > what the choices are and we do not know how many of these properties we >> > will >> > have. >> > >> > If this was done by passing an object that implements TypeConverter >> > this >> > would be a piece of cake - is there a way to do that? >> > >> > -- >> > thanks - dave >> > david_at_windward_dot_net >> > http://www.windwardreports.com >> > >> > Cubicle Wars - http://www.windwardreports.com/film.htm >> > >> > >> > >> >> >> >
Hello David,
you will find a solution either with a TypeConverter or a custom TypeDescriptor. First let me tell you that the PropertyGrid resource list (see my signature) will give you a lot of pointers to handle these classes. Some of my customers had a similar question and I wrote a FAQ. It allows to dynamically set the possible values and the underlying integer identifiers in a combobox property. It is sometimes specific to Smart PropertyGrid but you will be able to grab the main ideas from it that you can apply to the Microsoft PropertyGrid. The link is: http://www.visualhint.com/index.php/blog/post/how_to_setup_a_truly_dynamic_combobox_in_the_propertygrid/ Another thing: if you want to determine the current displayed values for a property and the number of properties from inside your converter, use the context variable passed to the converter's methods. You will be able to access your target instance and request it the properties loaded from the database and their values. I hope this helps. Best regards, Nicolas Cadilhac @ VisualHint (http://www.visualhint.com) Home of Smart FieldPackEditor.Net / DateTimePicker replacement Home of Smart PropertyGrid for .Net and MFC Microsoft PropertyGrid Resource List - http://www.propertygridresourcelist.com [quoted text, click to view] On May 26, 10:35 pm, David Thielen <thie...@nospam.nospam> wrote: > Hi; > > I have a property grid where I need to pass it an object with N properties > in it that are each an enumeration (but not an enum). These properties and > they enumerated values are read from a database - so we don't know beforehand > how many there will be and we do not know beforehand what their enumerated > values are. > > All of the examples for handling something like this show creating a class > that implements TypeConverter and then passing that class. But we do not know > what the choices are and we do not know how many of these properties we will > have. > > If this was done by passing an object that implements TypeConverter this > would be a piece of cake - is there a way to do that? > > -- > thanks - dave > david_at_windward_dot_nethttp://www.windwardreports.com > > Cubicle Wars -http://www.windwardreports.com/film.htm
Thanks for pointers
[quoted text, click to view] "VisualHint" <cadilhac@gmail.com> wrote in message news:1180269716.919676.82140@h2g2000hsg.googlegroups.com... > Hello David, > > you will find a solution either with a TypeConverter or a custom > TypeDescriptor. First let me tell you that the PropertyGrid resource > list (see my signature) will give you a lot of pointers to handle > these classes. > > Some of my customers had a similar question and I wrote a FAQ. It > allows to dynamically set the possible values and the underlying > integer identifiers in a combobox property. It is sometimes specific > to Smart PropertyGrid but you will be able to grab the main ideas from > it that you can apply to the Microsoft PropertyGrid. The link is: > http://www.visualhint.com/index.php/blog/post/how_to_setup_a_truly_dynamic_combobox_in_the_propertygrid/ > > Another thing: if you want to determine the current displayed values > for a property and the number of properties from inside your > converter, use the context variable passed to the converter's methods. > You will be able to access your target instance and request it the > properties loaded from the database and their values. > > I hope this helps. > > Best regards, > > Nicolas Cadilhac @ VisualHint (http://www.visualhint.com) > Home of Smart FieldPackEditor.Net / DateTimePicker replacement > Home of Smart PropertyGrid for .Net and MFC > Microsoft PropertyGrid Resource List - > http://www.propertygridresourcelist.com > > > On May 26, 10:35 pm, David Thielen <thie...@nospam.nospam> wrote: >> Hi; >> >> I have a property grid where I need to pass it an object with N >> properties >> in it that are each an enumeration (but not an enum). These properties >> and >> they enumerated values are read from a database - so we don't know >> beforehand >> how many there will be and we do not know beforehand what their >> enumerated >> values are. >> >> All of the examples for handling something like this show creating a >> class >> that implements TypeConverter and then passing that class. But we do not >> know >> what the choices are and we do not know how many of these properties we >> will >> have. >> >> If this was done by passing an object that implements TypeConverter this >> would be a piece of cake - is there a way to do that? >> >> -- >> thanks - dave >> david_at_windward_dot_nethttp://www.windwardreports.com >> >> Cubicle Wars -http://www.windwardreports.com/film.htm > >
Hi Dave,
Sorry that I couldn't understand your question exactly. [quoted text, click to view] > I have a property grid where I need to pass it an object with N properties in it that are each an enumeration (but not an enum). Could you tell me what you mean by "but not an enum" in the above sentence? [quoted text, click to view] > These properties and they enumerated values are read from a database - so we don't know beforehand how many there will be and we do not know beforehand what their enumerated values are. Do you mean that the properties and enumerated values are created at run time? If so, how do you add the properties to the object at run time? Could you please explain what your question is exactly? I look forward to your reply. Sincerely, Linda Liu Microsoft Online Community Support ================================================== Get notification to my posts through email? Please refer to http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif ications. Note: The MSDN Managed Newsgroup support offering is for non-urgent issues where an initial response from the community or a Microsoft Support Engineer within 1 business day is acceptable. Please note that each follow up response may take approximately 2 business days as the support professional working with you may need further investigation to reach the most efficient resolution. The offering is not appropriate for situations that require urgent, real-time or phone-based interactions or complex project analysis and dump analysis issues. Issues of this nature are best handled working with a dedicated Microsoft Support Engineer by contacting Microsoft Customer Support Services (CSS) at http://msdn.microsoft.com/subscriptions/support/default.aspx. ================================================== This posting is provided "AS IS" with no warranties, and confers no rights.
VisualHint's post showed me how to do this.
-- thanks - dave david_at_windward_dot_net http://www.windwardreports.com Cubicle Wars - http://www.windwardreports.com/film.htm [quoted text, click to view] "Linda Liu [MSFT]" wrote:
> Hi Dave, > > Sorry that I couldn't understand your question exactly. > > > I have a property grid where I need to pass it an object with N > properties > in it that are each an enumeration (but not an enum). > > Could you tell me what you mean by "but not an enum" in the above sentence? > > > These properties and they enumerated values are read from a database - so > we don't know beforehand how many there will be and we do not know > beforehand what their enumerated values are. > > Do you mean that the properties and enumerated values are created at run > time? If so, how do you add the properties to the object at run time? > > Could you please explain what your question is exactly? > > I look forward to your reply. > > Sincerely, > Linda Liu > Microsoft Online Community Support > > ================================================== > Get notification to my posts through email? Please refer to > http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif > ications. > > Note: The MSDN Managed Newsgroup support offering is for non-urgent issues > where an initial response from the community or a Microsoft Support > Engineer within 1 business day is acceptable. Please note that each follow > up response may take approximately 2 business days as the support > professional working with you may need further investigation to reach the > most efficient resolution. The offering is not appropriate for situations > that require urgent, real-time or phone-based interactions or complex > project analysis and dump analysis issues. Issues of this nature are best > handled working with a dedicated Microsoft Support Engineer by contacting > Microsoft Customer Support Services (CSS) at > http://msdn.microsoft.com/subscriptions/support/default.aspx. > ================================================== > > This posting is provided "AS IS" with no warranties, and confers no rights. >
perfect - thanks
-- thanks - dave david_at_windward_dot_net http://www.windwardreports.com Cubicle Wars - http://www.windwardreports.com/film.htm [quoted text, click to view] "VisualHint" wrote:
> Hello David, > > you will find a solution either with a TypeConverter or a custom > TypeDescriptor. First let me tell you that the PropertyGrid resource > list (see my signature) will give you a lot of pointers to handle > these classes. > > Some of my customers had a similar question and I wrote a FAQ. It > allows to dynamically set the possible values and the underlying > integer identifiers in a combobox property. It is sometimes specific > to Smart PropertyGrid but you will be able to grab the main ideas from > it that you can apply to the Microsoft PropertyGrid. The link is: > http://www.visualhint.com/index.php/blog/post/how_to_setup_a_truly_dynamic_combobox_in_the_propertygrid/ > > Another thing: if you want to determine the current displayed values > for a property and the number of properties from inside your > converter, use the context variable passed to the converter's methods. > You will be able to access your target instance and request it the > properties loaded from the database and their values. > > I hope this helps. > > Best regards, > > Nicolas Cadilhac @ VisualHint (http://www.visualhint.com) > Home of Smart FieldPackEditor.Net / DateTimePicker replacement > Home of Smart PropertyGrid for .Net and MFC > Microsoft PropertyGrid Resource List - http://www.propertygridresourcelist.com > > > On May 26, 10:35 pm, David Thielen <thie...@nospam.nospam> wrote: > > Hi; > > > > I have a property grid where I need to pass it an object with N properties > > in it that are each an enumeration (but not an enum). These properties and > > they enumerated values are read from a database - so we don't know beforehand > > how many there will be and we do not know beforehand what their enumerated > > values are. > > > > All of the examples for handling something like this show creating a class > > that implements TypeConverter and then passing that class. But we do not know > > what the choices are and we do not know how many of these properties we will > > have. > > > > If this was done by passing an object that implements TypeConverter this > > would be a piece of cake - is there a way to do that? > > > > -- > > thanks - dave > > david_at_windward_dot_nethttp://www.windwardreports.com > > > > Cubicle Wars -http://www.windwardreports.com/film.htm > >
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