It's at the databind. The example below demonstrates this. This is because to me it makes more sense to refer to something like SelectedUser instead of SelectedUserIndex in the code behind, and I prefer to avoid looking up the item in the collection anytime I want to do something with the selected item. How can you prove that a certain file was downloaded from a certain website?
iknowledgeboy: Difference between SelectedIndex, SelectedValue and There was already a similar question asked on the ASP.NET Forums - The 'SelectedIndex' and 'SelectedValue' attributes are mutually exclusive. What is the difference between a field and a property? Solution 1. Connect and share knowledge within a single location that is structured and easy to search. my code is producing the error: "'SelectedIndex' and 'SelectedValue' attributes are mutually exclusive".
c# - The 'SelectedIndex' and 'SelectedValue' attributes are mutually will return -1. The selectedIndex property sets or returns the index of the selected option in a drop-down list. You can read the followingshttps://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.listcontrol.selectedvalue(v=vs.110).aspx, https://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.dropdownlist.selectedindex(v=vs.110).aspx, https://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.listcontrol.selecteditem(v=vs.110).aspx. rev2022.11.7.43014. 503), Mobile app infrastructure being decommissioned. Do we still need PCR test / covid vax for travel to . (AKA - how up-to-date is travel info)? Why bad motor mounts cause the car to shake and vibrate at idle but not when you give it gas and increase the rpms?
ddl.SelectedIndex vs ddl.SelectedValue - Microsoft: ASP.NET - Tek-Tips Stack Overflow for Teams is moving to its own domain! Network script works whilst debugging locally, but doesn't work once deployed on server Here's a summary: The SelectedItem property returns the entire object that your list is bound to. Yep, that's me :). If you need to set the selected item, you need the second version. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Can an adult sue someone who violated them as a child? To be more specific if you literally want to retrieve Text of Selected Item then you can write: Your ListBox1 can also return Text using SelectedValue property if value has set to that before.
[Resuelta] c# | ComboBox SelectedItem vs SelectedValue - Iteramos.com Find centralized, trusted content and collaborate around the technologies you use most. Calling DataBind manually immediately before setting the SelectedValue avoided the error. If you need to obtain the index of the selected item, use the BaseListBoxControl.SelectedIndex property. How to understand "round up" in this context?
Listview SelectedValue, SelectedIndex @Rachel I completely agree, this maybe shouldn't be "best practice" but "which way is better" @Sheridan, do you have a problem with the question or the title? Not the answer you're looking for? What is the difference between a User Control Library and a Custom Control Library? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Covariant derivative vs Ordinary derivative. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, i wrote it in the title but i will bring it down to the question section. eg. Dropdownliste Zurcksetzen SelectedValue ; 10. Binding SelectedItem vs SelectedIndex - When should I choose one over the other? What are the correct version numbers for C#? the Product). @astander - But he is getting error inside FillDropdown function databind line, before this line he is not setting selected index or selected value. Traditional English pronunciation of "dives"? The SelectedValuePath property provides a way to specify a SelectedValue for the SelectedItem in a TreeView.The SelectedItem represents an object in the Items collection and the TreeView displays the value of a single property of the .
HTMLSelectElement.selectedIndex - Web APIs | MDN - Mozilla Making statements based on opinion; back them up with references or personal experience. Since we will be using the MVVM binding for our combo boxes in that case this is the property which we can use to notify VM that item has been selected. Look at the example in the demo code below for code.
selected index and selected value - c-sharpcorner.com If all other things are equal, I use a SelectedObject property to bind the SelectedItem property. and technology enthusiasts meeting, learning, and sharing knowledge. How can you prove that a certain file was downloaded from a certain website? What is the difference between const and readonly in C#? If SelectedObject may not be considered .Equals() to any item in your Items list, use SelectedIndex. Connect and share knowledge within a single location that is structured and easy to search. The HTMLSelectElement.selectedIndex is a long that reflects the index of the first or last selected <option> element, depending on the value of multiple. This is of type object and we can bind any type derived from object type with this property. We're binding the CategoryID property on the Product as the selected value (using the SelectedValue property). When the Littlewood-Richardson rule gives only irreducibles?
DAX Fridays! #212: VALUES vs SELECTEDVALUE to conditional - YouTube SelectedIndex, SelectedValue, and FormattingEnabled are related as follows: If FormattingEnabled is false, SelectedIndex will not be set to -1 when SelectedValue is blank. So say you've bound a list to a collection of Category objects (with each Category object having Name and ID properties).
[Solved] SelectedIndex not successful with comboboxes - CodeProject Return Variable Number Of Attributes From XML As Comma Separated Values, Easiest way to plot a 3d polytope and test if a point is in it. which line/part of the code is giving this error ? Select the
element with index "2": The selectedIndex property sets or returns the index of the selected option in a drop-down list. If he wanted control of the company, why didn't Elon Musk buy 51% of Twitter shares instead of 100%? Setting the SelectedIndex value of a RadioButtonList - ASP.NET :rose: Is there a term for when you use grammar from one language in another? Remarks. @KingArthur You're talking about explicit binding, I'm talking about convention based binding. If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: document.getElementById("mySelect").selectedIndex = "2"; var x = document.getElementById("mySelect").selectedIndex; document.getElementById("mySelect").selectedIndex = "-1"; W3Schools is optimized for learning and training. To learn more, see our tips on writing great answers. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. QGIS - approach for automatically rotating layout window. Find centralized, trusted content and collaborate around the technologies you use most. We have a ComboBox bound to a list of Categories (via ItemsSource). It occurs at the databind. I often confuse SelectedItem with SelectedValue , and SelectedValue with SelectedValuePath. bergang zur Registerkarte bei SelectedIndex Von ViewController ; 11. wpf Combobox SelectedValue Klassenname anstelle der Eigenschaft erhalten ; 12. Mein Code fhrt eine bestimmte Aktion mit der SelectedItem, wenn DropDownList.SelectedValue = -1.. Wenn ich den Code teste, whle ich den Artikel A unter index = 2.Die resultierende DropDownList.SelectedItem = "A".Gut soweit. All of them works individually as separate functions. If my source table gets out of step with the drop-down indexing - I'm effectively hosed. Access Vba Combobox Selectedindex will sometimes glitch and take you a long time to try different solutions. When did double superlatives go out of fashion in English? This is the code that I am trying to use to set the selectedindex for the dropdownlist after binding the data: (note: strValue is the value found for the 'option value' for the listitem) CType (e.Item.FindControl ("gridPageDropDown"), DropDownList).SelectedIndex = CType (e.Item.FindControl ("gridPageDropDown"), DropDownList).Items.IndexOf . how to verify the setting of linux ntp client? Asking for help, clarification, or responding to other answers. Yes, you could instead set ItemsSource={Binding Foos} SelectedIndex={Binding MyFoosIndex}, and create a MyFoosIndex property on an object inheriting from the PropertyChangedBase class from CM.Micro, which would effectively be the same. Their names can be a bit confusing :). We're relating this to the Category's ID property via the SelectedValuePath property. Before databind set SelectedIndex to -1 it should help, This can happen also if you have the selectedValue set before DataBind() call. The 'SelectedIndex' and 'SelectedValue' attributes are mutually exclusive, ASP.NET Forums - The 'SelectedIndex' and 'SelectedValue' attributes are mutually exclusive, Stop requiring only one assertion per unit test: Multiple assertions are fine, Going from engineer to entrepreneur takes more than just good code (Ep. HTML DOM Select selectedIndex Property - W3Schools Window vs Page vs UserControl for WPF navigation? MVVM ComboBox SelectedIndex vs. SelectedItem ; 13. What is the difference betweeen the following: All these dependency properties are defined in Selector class. Setting a new index raises the SelectedIndexChanged event. In WPF, what are the differences between the x:Name and Name attributes? So say you've bound a list to a collection of Category objects (with each Category object having Name and ID properties). +100. Another thing I use to help me decide which method to use is if the. While WPF supports it, it's much easier to subsribe to collection events in your own code if the instance doesn't change. ComboBox SelectedItem vs SelectedValue - C# - YouTube If SelectedObject cannot be null (such as an enum), and you need to default to be no item selected, then use SelectedIndex. SSH default port not changing (Ubuntu 22.10). This usually happens when your selected item comes from a different location than where your list of items is. If you think the words "Best practice" in the title will lead to more close votes, perhaps we can edit them out and replace them with some thing more specific, such as. Here's a summary: The SelectedItem property returns the entire object that your list is bound to. In our example, selecting "ShapeColor" will make the SelectedValue return only the color, and not the whole shape object. Access Vba Combobox Selectedindex Quick and Easy Solution SelectedItem, meanwhile, returns the entire Person object currently selected. ComboBox SelectedItem vs SelectedValue - C# [ Glasses to protect eyes while coding : https://amzn.to/3N1ISWI ] ComboBox SelectedItem vs SelectedValue - C# D. GridView.SelectedIndex Property (System.Web.UI.WebControls) What is the difference between x:Reference and ElementName? Please check SelectedItem to be null before calling any method. Understanding SelectedValue, SelectedValuePath, SelectedItem By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. +1. Light bulb as limit, to what is current limited to? This will cause issues down the road if the source table is going to be heavily edited. It's a little confusing initially, but hopefully this makes it a bit clearer :). Euler integration of the three-body problem. I appreciate the effort put into this answer, but to be honest I was almost as confused after reading it as I was before. What is this political cartoon by Bob Moran titled "Amnesty" about? In fact, it's an answer I'm interested in as well. From what I can tell it is due to the fact that calling. What are the different between this 3 in dropdown list. To clear the selection of a row, set this property to -1. DropDownList Steuerelement gibt das falsche Element zurck.DropDownList Falscher SelectedIndex. There was already a similar question asked on the ASP.NET Forums - The 'SelectedIndex' and 'SelectedValue' attributes are mutually exclusive. Hi I would like to ask. To learn more, see our tips on writing great answers. I don't find myself relying on indices often, but your cases may be different. We equally welcome both specific questions as well as open-ended discussions. SelectedValue bei SelectedIndex in DropDownList erhalten? - VoidCC Below listbox1.SelectedValue becomes a string value. Depends on your needs. This property indicates the zero-based index of the currently selected item in the combo box list. Consequences resulting from Yitang Zhang's latest claimed results on Landau-Siegel zeros, Space - falling faster than light? Not the answer you're looking for? Sci-Fi Book With Cover Of A Person Driving A Ship Saying "Look Ma, No Hands! SelectedValueChanged se dispara tan pronto como se hace una nueva seleccin de la parte de la lista de la ComboBox, y SelectedItemChanged se dispara cuando el elemento se muestra en la porcin TextBox del ComboBox. Does baro altitude from ADSB represent height above ground level or height above mean sea level? SelectedValue and SelectedValuePath These are the two most confusing and misinterpreted properties for combobox. The SelectedValue was being set in code, but I wasn't calling DataBind anywhere, so this was being handled at the usual point in the page lifecycle. The reason there was setting both the SelectedIndex and SelectedValue properties in the Page_Load event. if you say give me listbox1.SelectedItem it will give you the entire object. Well, this is the property with which people are confused the most. Should I avoid attending certain conferences? I hang around these here parts to answer questions when I can. RadioButtonList.SelectedValue =(string)ds.Fields.Item["BidResponse"]; but you have to be sure that ds.Fields.Item["BidResponse"]; will return Y, N or NR otherwise the application will throw ArgumentOutOfRangeException By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. I look at my codes multiple time and i see a clash in the selectedindex and selected value. Sorry man, I hate giving down votes, but SelectedValue is, Difference between SelectedItem, SelectedValue and SelectedValuePath, Stop requiring only one assertion per unit test: Multiple assertions are fine, Going from engineer to entrepreneur takes more than just good code (Ep. Let's say you have a Product object, that your view is bound to (with properties for things like ProductName, Weight, etc). The error only occurred during data binding, which had none of my code in the markup. Stack Overflow for Teams is moving to its own domain! Use this property to determine the value of the currently selected item displayed within the list box control. Most of them thinks that SelectedValue property returns . Is there a term for when you use grammar from one language in another? You can set SelectedIndex = -1, but always remind you that when you set it to -1 even though one item will seem to be selected, you cannot get its value from SelectedItem as it will return you null. Note: If no option is selected, the selectedIndex . Let's say that you have an observable collection of object type Foo, and you have a custom ListView that the user will select from. A few rules I use to determine which one to select. Which finite projective planes can have a symmetric incidence matrix? ListControl.SelectedValue Property (System.Windows.Forms) Property via the SelectedValuePath property any type derived from object type with property! > DAX Fridays up to your personal preference same guy who have written book on Silverlight structured easy... Id property via the SelectedValuePath property 11. WPF Combobox SelectedValue Klassenname anstelle der erhalten! He wanted Control of the selected value ( using the SelectedValue avoided the error only occurred during data,... What are the correct version numbers for C # a child guy who written. The list box Control of my code in the combo box list view=windowsdesktop-7.0 '' > SelectedValue bei SelectedIndex in erhalten! To this RSS feed, copy and paste this URL into your RSS reader the BaseListBoxControl.SelectedIndex property list a... Is this political cartoon by Bob Moran titled `` Amnesty '' about an I! Often, but your cases may be different second version Library and a?....Equals ( ) to any item in your own code if the instance does change! You 've bound a list of Items is ListBox1, however we can insert also... Questions when I can > below listbox1.SelectedValue becomes a string value BaseListBoxControl.SelectedIndex property, Hands. Or responding to other answers privacy policy and cookie policy this makes it a bit clearer:.... Should I choose one over the other often, but your cases be! Selectedindex in dropdownlist erhalten you say give me listbox1.SelectedItem it will give you the same guy have... 2022 Stack Exchange Inc ; user contributions licensed under CC BY-SA Combobox bound to ( each. The drop-down indexing - I & # x27 ; m effectively hosed the! Also, but hopefully this makes it a bit clearer: ) Von ViewController ; WPF... In the Page_Load event altitude from ADSB represent height above ground level height. A list of Items is at the example in the SelectedIndex and selected value ( using SelectedValue... Considered.Equals ( ) to any item in your own code if the instance n't! Of linux ntp client had none of my code in the SelectedIndex and properties. We have a symmetric incidence matrix bound to a list to a collection of Category objects ( with each object... Cookie policy list, use the BaseListBoxControl.SelectedIndex property SelectedIndex will sometimes glitch and take you a long time to different. Ssh default port not changing ( Ubuntu 22.10 ) that a certain file was downloaded from a different than... Stack Exchange Inc ; user contributions licensed under CC BY-SA, selectedindex vs selectedvalue this property to determine the value selected... Option in a drop-down list is bound to a list of Categories ( via ItemsSource ) numbers. Listbox1, however we can insert it also, but hopefully this makes it a bit:... You the same guy who have written book on Silverlight to use is the! Check SelectedItem to be heavily edited which had none of my code in the Page_Load.! A property about explicit binding, which had none of my code in the markup our... Code is giving this error type derived from object type with this property to -1 vs -. To what is the property with which people are confused the most is... For C # Teams is moving to its own domain of Category objects ( each. From what I can a term for when you give it gas and increase the rpms SelectedValue Klassenname der. String value it also, but hopefully this makes it a bit clearer: ) connect share! Const and readonly in C # - I & # x27 ; m hosed! A little confusing initially, but your cases may be different erhalten ; 12 SelectedIndex. Gets out of fashion in English the Category 's ID property via the property! Adult sue someone who violated them as a child why bad motor mounts cause the car to and! More, see our tips on writing great answers your RSS reader as the selected item in the markup ''... Personal preference use most 22.10 ) explicit binding, which had none of my in... Understand `` round up '' in this context from object type with this property to determine the of! User selectedindex vs selectedvalue licensed under CC BY-SA are you the same guy who written. Is bound to not when you use grammar from one language in another choose! Up to your personal preference.Equals ( ) to any item in selectedindex vs selectedvalue! Which people are confused the most in a drop-down list try different.... Things are equal, I use a SelectedObject property to -1 I look at my codes multiple selectedindex vs selectedvalue I! - how up-to-date is travel info ) SelectedValue avoided the error only occurred data... Learning, and sharing knowledge supports it, it 's a little confusing initially, but your cases be. For Combobox selectedindex vs selectedvalue C # usually happens when your selected item in the markup confused the most '' about or! To the Category 's ID property via the SelectedValuePath property up-to-date is travel )... Setting of linux ntp client its own domain you a long time to try different solutions for to. Musk buy 51 % of Twitter shares instead of 100 % 're talking convention... Object having Name and ID properties ) SelectedObject property to -1 which line/part of the selected! In Selector class calling DataBind manually immediately before setting the SelectedValue property ) below listbox1.SelectedValue a! Here 's a little confusing initially, but your cases may be different property the... What is the property with which people are confused the most try different solutions ItemsSource.... ( with each Category object having Name and Name attributes code if the SelectedValue, SelectedValue... Binding SelectedItem vs SelectedIndex - when should I choose one over the other Items is 's easier... Road if the 're talking about convention based binding clash in the SelectedIndex and SelectedValue with SelectedValuePath changing... Fact, it 's much easier to subsribe to collection events in your list! Not be considered.Equals ( ) to any item in the demo code below for code the. List is bound to a list to a collection of Category objects ( each! 51 % of Twitter shares instead of 100 % calling any method a Driving... Insert it also, but hopefully this makes it a bit clearer:.! Moving to its own domain buy 51 % of Twitter shares instead of 100?. Consequences resulting from Yitang Zhang 's latest claimed results on Landau-Siegel zeros, -! Mean sea level often confuse SelectedItem with SelectedValue, and sharing knowledge happens! Drop-Down list book with Cover of a Person Driving a Ship Saying `` look Ma, Hands... Library and a property a long time to try different solutions you 've bound a list Items! Should I choose one over the other you prove that a certain file was downloaded from a certain file downloaded... Comes from a certain website your cases may be different answer questions when I can tell it is due the..., set this property to determine the value of the currently selected item comes from a certain?. You say give me listbox1.SelectedItem it will give you the entire object I confuse... Political cartoon by Bob Moran titled `` Amnesty '' about avoided the error only during! Have written book on Silverlight SelectedIndex Von ViewController ; 11. WPF Combobox SelectedValue Klassenname anstelle Eigenschaft. Set this property to determine which one to select Exchange Inc ; user contributions licensed under CC BY-SA Library a... Comes from a certain website it is due to the Category 's ID property the. If he wanted Control of the currently selected item comes from a certain website '' http: ''! Manually immediately before setting the SelectedValue avoided the error only occurred during binding... Note: if No option is selected, the SelectedIndex and selected value and SelectedValuePath these are different... ( with each Category object having Name and Name attributes when should I choose one over other! 'Ve bound a list to a collection of Category objects ( with each object! '' https: //m.youtube.com/watch? v=DT3XTcXJxo4 '' > SelectedValue bei SelectedIndex Von ViewController 11.! How to verify the setting of linux ntp client copy and paste this URL into your reader. A few rules I use a SelectedObject property to determine which one to.. Step with the drop-down indexing - I & # x27 ; m effectively hosed client! `` round up '' in this context bound a list to a collection of Category objects with. Give you the same guy who have written book on Silverlight finite projective planes can have symmetric! Why bad motor mounts cause the car to shake and vibrate at idle but not you. Road if the instance does n't change the car to shake and vibrate at idle but not when you most... Have written book on Silverlight Control Library and a property Selector class book on Silverlight and sharing.... Element zurck.DropDownList Falscher SelectedIndex this property to -1 if he wanted Control of the company, why did n't Musk! Giving this error ViewController ; 11. WPF Combobox SelectedValue Klassenname anstelle der erhalten... Wpf supports it, it 's an answer I 'm interested in well! Both the SelectedIndex property sets or returns the entire object who violated them a. //De.Voidcc.Com/Question/P-Tdaukbcd-Bh.Html '' > < /a > below listbox1.SelectedValue becomes a string value which. This will cause issues down the road if selectedindex vs selectedvalue source table is going to be heavily edited a little initially! Learn more, see our tips on writing great answers our terms service!
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