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combobox find item by valueIs there any way in a combobox to find the index of an item or set the item
in a combobox by the value? I know there is a FindString, and a FindStringExact method in the combobox object, but is there anything simmilar or any work around to getting the index of an object or setting the selecteditem by the value? Any help is appreciated, thank you. Hi Jason,
what you want to do is this: // // first get the value you want to select // e.g. from the database // string myValue = "4"; // // In the combobox, find this value and then select it // comboBox.Items.FindByValue(myValue).Selected=true Also, you can do the same thing by the combo box item text comboBox.Items.FindByText(myValue).Selected=true Show quote "Jason" wrote: > Is there any way in a combobox to find the index of an item or set the item > in a combobox by the value? I know there is a FindString, and a > FindStringExact method in the combobox object, but is there anything simmilar > or any work around to getting the index of an object or setting the > selecteditem by the value? Any help is appreciated, thank you. Rad,
What version of the framework are you talking about? I'm using vb.net also tried your suggestion in c# just to be sure, but FindByValue (nor FindByText) does not exist in framework 2.0??? Thanks for your input. Jason Show quote "Rad [Visual C# MVP]" wrote: > Hi Jason, > > what you want to do is this: > > // > // first get the value you want to select > // e.g. from the database > // > string myValue = "4"; > > // > // In the combobox, find this value and then select it > // > > comboBox.Items.FindByValue(myValue).Selected=true > > > > Also, you can do the same thing by the combo box item text > > comboBox.Items.FindByText(myValue).Selected=true > > -- > > > Bits. Bytes. > http://bytes.thinkersroom.com > ------------------------------ > > > "Jason" wrote: > > > Is there any way in a combobox to find the index of an item or set the item > > in a combobox by the value? I know there is a FindString, and a > > FindStringExact method in the combobox object, but is there anything simmilar > > or any work around to getting the index of an object or setting the > > selecteditem by the value? Any help is appreciated, thank you. Hi,
As Kevin mentioned in another reply, FindByValue is used by = ListItemCollection, which in turn is used by the web equivalent of a = ComboBox, the DropDownList. Although strictly speaking a ComboBox is on= ly = found in a windows application and a DropDownList is only found in a = windows application, it is preferred to specify what kind of application= = you are working on as the terms are often mixed. Specifying the type of= = application will also prevent solutions not applicable to your problem. On Thu, 16 Nov 2006 18:05:02 +0100, Jason = <Ja***@discussions.microsoft.com> wrote: Show quote > Rad, -- => > What version of the framework are you talking about? I'm using = > vb.net > also tried your suggestion in c# just to be sure, but FindByValue (nor= > FindByText) does not exist in framework 2.0??? Thanks for your input.= > > Jason > > "Rad [Visual C# MVP]" wrote: > >> Hi Jason, >> >> what you want to do is this: >> >> // >> // first get the value you want to select >> // e.g. from the database >> // >> string myValue =3D "4"; >> >> // >> // In the combobox, find this value and then select it >> // >> >> comboBox.Items.FindByValue(myValue).Selected=3Dtrue >> >> >> >> Also, you can do the same thing by the combo box item text >> >> comboBox.Items.FindByText(myValue).Selected=3Dtrue >> >> -- >> >> >> Bits. Bytes. >> http://bytes.thinkersroom.com >> ------------------------------ >> >> >> "Jason" wrote: >> >> > Is there any way in a combobox to find the index of an item or set = = >> the item >> > in a combobox by the value? I know there is a FindString, and a >> > FindStringExact method in the combobox object, but is there anythin= g = >> simmilar >> > or any work around to getting the index of an object or setting the= >> > selecteditem by the value? Any help is appreciated, thank you. Happy Coding! Morten Wennevik [C# MVP] Yes, my reply to Ciaran, I realized the problem that caused, and yes I am
writing a Windows Application, again sorry for the confusion, and thanks for the help. :) Show quote "Morten Wennevik" wrote: > Hi, > > As Kevin mentioned in another reply, FindByValue is used by > ListItemCollection, which in turn is used by the web equivalent of a > ComboBox, the DropDownList. Although strictly speaking a ComboBox is only > found in a windows application and a DropDownList is only found in a > windows application, it is preferred to specify what kind of application > you are working on as the terms are often mixed. Specifying the type of > application will also prevent solutions not applicable to your problem. > > On Thu, 16 Nov 2006 18:05:02 +0100, Jason > <Ja***@discussions.microsoft.com> wrote: > > > Rad, > > > > What version of the framework are you talking about? I'm using > > vb.net > > also tried your suggestion in c# just to be sure, but FindByValue (nor > > FindByText) does not exist in framework 2.0??? Thanks for your input. > > > > Jason > > > > "Rad [Visual C# MVP]" wrote: > > > >> Hi Jason, > >> > >> what you want to do is this: > >> > >> // > >> // first get the value you want to select > >> // e.g. from the database > >> // > >> string myValue = "4"; > >> > >> // > >> // In the combobox, find this value and then select it > >> // > >> > >> comboBox.Items.FindByValue(myValue).Selected=true > >> > >> > >> > >> Also, you can do the same thing by the combo box item text > >> > >> comboBox.Items.FindByText(myValue).Selected=true > >> > >> -- > >> > >> > >> Bits. Bytes. > >> http://bytes.thinkersroom.com > >> ------------------------------ > >> > >> > >> "Jason" wrote: > >> > >> > Is there any way in a combobox to find the index of an item or set > >> the item > >> > in a combobox by the value? I know there is a FindString, and a > >> > FindStringExact method in the combobox object, but is there anything > >> simmilar > >> > or any work around to getting the index of an object or setting the > >> > selecteditem by the value? Any help is appreciated, thank you. > > > > -- > Happy Coding! > Morten Wennevik [C# MVP] > I'm not sure if your talking web or windows as in windows apps, the list
items in a combobox are objects (so they dont necesarily have a value property), so if the object you put it there overrides equals, you can just do comboBox1.Items.IndexOf(value) On the web there is a FindItemByValue on the items collection. This returns the actual item so if you wanted the index you could then do an index of. HTH Ciaran O'Donnell Show quote "Jason" wrote: > Is there any way in a combobox to find the index of an item or set the item > in a combobox by the value? I know there is a FindString, and a > FindStringExact method in the combobox object, but is there anything simmilar > or any work around to getting the index of an object or setting the > selecteditem by the value? Any help is appreciated, thank you. Ok, I see, sorry for the confussion, I'm talking about a Windows app, the
combobox has a ValueMember property and a DisplayMember property, so once I populate the combo box with say all the states, when the user loads a particular record in which the state is NY, I need to set the selecteditem to NY, but in the database I'm only going to store the ID for NY, and if I do a ..IndexOf(state), it will not match up because the state object in the combobox will have name, id, etc., and the object I'm passing it only has the ID, which will cause the comparison the fail, anyway I can use the id to set the selected item or get the index? Jason Show quote "Ciaran O''Donnell" wrote: > I'm not sure if your talking web or windows as in windows apps, the list > items in a combobox are objects (so they dont necesarily have a value > property), so if the object you put it there overrides equals, you can just > do comboBox1.Items.IndexOf(value) > On the web there is a FindItemByValue on the items collection. This returns > the actual item so if you wanted the index you could then do an index of. > > HTH > > Ciaran O'Donnell > > "Jason" wrote: > > > Is there any way in a combobox to find the index of an item or set the item > > in a combobox by the value? I know there is a FindString, and a > > FindStringExact method in the combobox object, but is there anything simmilar > > or any work around to getting the index of an object or setting the > > selecteditem by the value? Any help is appreciated, thank you. Set the text property equal to what you want it to be. If it's in the
display list, it will select that entry. I added this to Form_Load for one of mine. When SelectedIndex changes, my combo box loads a separate part of the screen. I did this: myComboBox.SelectedValue = 0 'this makes it have none selected myComboBox.Text = "TextOfThirdEntry" Then when I look at myComboBox.SelectedValue, it's the index for the one I put the text in for, and the separate part of the screen has loaded for the right entry. Note: If you don't set SelectedValue to 0 before doing this, it equals Nothing, and could impact your results, depending on what you're doing. Is that what you're trying to accomplish? Robin S. ---------------------------- Show quote "Jason" <Ja***@discussions.microsoft.com> wrote in message news:9E14EF6B-5C5A-41C3-877C-052D872BEDEA@microsoft.com... > Ok, I see, sorry for the confussion, I'm talking about a Windows app, the > combobox has a ValueMember property and a DisplayMember property, so once > I > populate the combo box with say all the states, when the user loads a > particular record in which the state is NY, I need to set the selecteditem > to > NY, but in the database I'm only going to store the ID for NY, and if I do > a > .IndexOf(state), it will not match up because the state object in the > combobox will have name, id, etc., and the object I'm passing it only has > the > ID, which will cause the comparison the fail, anyway I can use the id to > set > the selected item or get the index? > > Jason > > "Ciaran O''Donnell" wrote: > >> I'm not sure if your talking web or windows as in windows apps, the list >> items in a combobox are objects (so they dont necesarily have a value >> property), so if the object you put it there overrides equals, you can >> just >> do comboBox1.Items.IndexOf(value) >> On the web there is a FindItemByValue on the items collection. This >> returns >> the actual item so if you wanted the index you could then do an index of. >> >> HTH >> >> Ciaran O'Donnell >> >> "Jason" wrote: >> >> > Is there any way in a combobox to find the index of an item or set the >> > item >> > in a combobox by the value? I know there is a FindString, and a >> > FindStringExact method in the combobox object, but is there anything >> > simmilar >> > or any work around to getting the index of an object or setting the >> > selecteditem by the value? Any help is appreciated, thank you. Hi Jason,
Another way is that if your combobox is binding to a certain object, for example DataSet, we can search the value in the DataSource and get the displayed string. Then use FindStringExact to get the index of item in combobox. BTW, FindByValue is a method of ListItemCollection class in web form projects. It is not suitable here. If anything is unclear, please feel free to let me know. Kevin Yu 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.) Kevin, thanks, although I was trying to avoid having to store the collections
of objects in memory since I'm working with many combo boxes, my work around was to write a custom function to loop through all objects in the combobox and extracting them then comparing the id with the id of the object I want to set it to, and thus getting the index from there, I think it may be a bit ineficient though. Jason Show quote "Kevin Yu [MSFT]" wrote: > Hi Jason, > > Another way is that if your combobox is binding to a certain object, for > example DataSet, we can search the value in the DataSource and get the > displayed string. Then use FindStringExact to get the index of item in > combobox. > > BTW, FindByValue is a method of ListItemCollection class in web form > projects. It is not suitable here. > > If anything is unclear, please feel free to let me know. > > Kevin Yu > 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.) > > Nice to know that you have a workaround. If you have any other questions,
please feel free to post them in the community. Kevin Yu Microsoft Online Community Support ================================================== (This posting is provided "AS IS", with no warranties, and confers no rights.) Robin,
No that is not what I'm trying to do, I'm starting off with a combobox with no item selected, it has a collection of objects, say STATES objects, with properties NAME, ID, ABBREVIATION, etc. (many properties), then I set the display member to "Name", and value member to "Id", when loading data for a record in my db, in the db I store the state ID, thus I want to set the selected item to whatever object it is that has ID = X, you see... myComboBox.SelectedIndex = [some function that returns the index of the object in combo box with ID = x] OR myComboBox.SelectedItem= [some function that returns the object in combo box with ID = x] OR myComboBox.SelectedValue = myState.Id Any of these variations will do, but it appears I'm out of luck, and there is no such function, except for the "brute force" solution I created, as posted on my reply to Kevin, thanks for your help though. Jason Show quote "RobinS" wrote: > Set the text property equal to what you want it to be. If it's in the > display list, it will select that entry. > > I added this to Form_Load for one of mine. When SelectedIndex > changes, my combo box loads a separate part of the screen. > > I did this: > myComboBox.SelectedValue = 0 'this makes it have none selected > myComboBox.Text = "TextOfThirdEntry" > > Then when I look at myComboBox.SelectedValue, it's the index > for the one I put the text in for, and the separate part of the > screen has loaded for the right entry. > > Note: If you don't set SelectedValue to 0 before doing this, > it equals Nothing, and could impact your results, depending > on what you're doing. > > Is that what you're trying to accomplish? > > Robin S. > ---------------------------- > > "Jason" <Ja***@discussions.microsoft.com> wrote in message > news:9E14EF6B-5C5A-41C3-877C-052D872BEDEA@microsoft.com... > > Ok, I see, sorry for the confussion, I'm talking about a Windows app, the > > combobox has a ValueMember property and a DisplayMember property, so once > > I > > populate the combo box with say all the states, when the user loads a > > particular record in which the state is NY, I need to set the selecteditem > > to > > NY, but in the database I'm only going to store the ID for NY, and if I do > > a > > .IndexOf(state), it will not match up because the state object in the > > combobox will have name, id, etc., and the object I'm passing it only has > > the > > ID, which will cause the comparison the fail, anyway I can use the id to > > set > > the selected item or get the index? > > > > Jason > > > > "Ciaran O''Donnell" wrote: > > > >> I'm not sure if your talking web or windows as in windows apps, the list > >> items in a combobox are objects (so they dont necesarily have a value > >> property), so if the object you put it there overrides equals, you can > >> just > >> do comboBox1.Items.IndexOf(value) > >> On the web there is a FindItemByValue on the items collection. This > >> returns > >> the actual item so if you wanted the index you could then do an index of. > >> > >> HTH > >> > >> Ciaran O'Donnell > >> > >> "Jason" wrote: > >> > >> > Is there any way in a combobox to find the index of an item or set the > >> > item > >> > in a combobox by the value? I know there is a FindString, and a > >> > FindStringExact method in the combobox object, but is there anything > >> > simmilar > >> > or any work around to getting the index of an object or setting the > >> > selecteditem by the value? Any help is appreciated, thank you. > > >  |
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