Forms Data Controls :: CheckboxList 101 - Checkmarks Are Not Showing?
Jun 3, 2010
I want to show a checkbocklist bound to a datasource. The datasource is a table with 2 columns. Column1 = description of the checkbox, Column2 = a true/false whether the box is checked or not.
I am able to create the checkboxlist control and bind it to the table but the checkmarks are not showing for values that are true.
Is there a predefined field type for the checked value? Does it have to be 0 or 1 or True/False or Checked/Unchecked in order for the checkboxlist to interpret it correctly?
I need to charge my checkboxlist1 from database, eg load fruits and vegetables. When selecting fruits, new filter based on the previous selection in my checkboxlist2. for specific search.
I have a Gridview that works and in one of the TemplateFeld EditItemField I have a checkboxlist that I dynamically create based on the row ID. My first and third row work as expected, when I click on the 'Edit' link the Job Posting column shows up with checkboxlist. The second row does not do this.
I think it's something with gvRecruiters_RowDataBound but I can't see it.
default.aspx
HTML Code: <asp:GridView ID="gvRecruiters" runat="server" AutoGenerateColumns="false" OnPageIndexChanging="gvRecruiters_PageIndexChanging" OnRowCancelingEdit="gvRecruiters_RowCancelingEdit" OnRowDataBound="gvRecruiters_RowDataBound" OnRowDeleting="gvRecruiters_RowDeleting"
Need a little guidance on handling selected items in a listview and sessions.
First, the CheckBoxList looks like this:
[Code]....
In the code behind for that page, I'm trying to put the store the selected values into the session like this:
[Code]....
Finally, I want to retrieve the items and wind up with a string containing the items (I think I want a string--what I need to do is put the items into a variable so I can display them in a Label control and also include them in the text of an email that gets generated. Here is how I'm attempting to retrieve the items:
[Code]....
But my variable "Opportunities" ends up with this value: "System.Web.UI.WebControls.ListItemCollection".
Page 1: To add a record in to DB. At this page, as per the user requests , few controls will be added to the page from server side code. one of them is checkbox list. and when user is requesting to save data, its going to the DB. Everything is fine upto now.
Page 2: To edit the record which is entered from page no 1. When user requests to edit the record entered at page no 1, i'm redirecting user to this update page, with record id, and generating the required controls to show the values. Now the main problem is :
When page is loading first time, I m creating the required controls and then assigning the values to them to edit. but after that at each postback, the value of datasource of checkboxlist is becoming null, same case is with the label control. but the value of textbox is same, it is not becoming empty at each postback. In code: In code i have created two method to generate controls.
1st is : to create new controls, and to assign values to them
2nd is : to regenerate the controls at each postback, with the same IDs, but not assigning any value here.
I think viewstate will reload the values of respective controls, if IDs are same.
I have a FormView which will bind values from the database using a ID parameter from queryString. In my database, I have a field named CategoryList which can store multiple CategoryID (From Category table) in CSV format (eg: "1,3,4,5"). I'm using SQLDataSource as my datasource.
So, I want to show the selected category in CheckBoxList. Meaning that, the checkbox will be checked (on page load) if its ID is in the CategoryList. Also, I want to allow the user to check/uncheck the CheckBoxList and updates to the database in CSV format. How can i do that?
I am somewhat new at C# so forgive me if I have something listed wrong. This is what I got:
I am working on a school project designing a car dealership website. I have an inventory list that allows you to edit any car in the inventory. When you click on the edit button it takes you to the edit page and populates the controls with selections from the database. I have an options table that stores the VehicleID and Option ID. When the page loads it fills all the DropDownLists for the vehicle info with the data and selects the correct item according to the database selection but the CheckBoxList does not select the items that are on the Options table. I checked the query in SSMS and it returns the correct data. I have stepped through the method and it works till the "(currentCheckBox != null) if statement. It doesn't throw any errors but it also doesn't select items when the page renders.
I thought it might have been something with the page life cycle since databound controls don't render until the end but the DropDown's I have fill and selects the correct item according to the database.
Scenario : I want to add data from database to checklistbox on page_load and checked data should be stored in other table.I want to bind data to checklistbox like a gridview, i m trying but i m not able to.
I can insert a checkboxlist selected value as comma delimited string into the database. But I have hard time to reload it in formview edit mode. I added a hidden label to retrieve the comma delimited string and try to use checkboxlist databound event, but it doesn't work. I don't know what problem is in my code.
I have a page where I will insert all the data into the database. The page where I'm having problems is when I select an item from the checkboxlist it only displays one item. The data which is displayed is only the one that was inserted with one selected item from the checkboxlist. The following code is the page I'm using to try to retrieve the data from the database. I am trying to do is when a user selects the first, second, or third, or fourth item. The corresponding data appears in the gridview. In my current code, the record which has one item selected appears. If the user has more than one selected it does not appear. It comes up as empty. Is there a way I can do it?
I working on a dontnetnuke module, and was wondering how can I bind a selected checkboxlist item into the databse
Now I got it like this, but this if or 'one' selected item.
But the thing I want it, that every one of them has their own Value (abPermission.TabID, TabPermission.PermissionID, TabPermission.AllowAccess, TabPermission.UserID) (tabhome = 6,6,6,6) (tabsupp = 7,7,7,7)
If I select 'one' or 'multiple' they values will be inserted into the database
I am attempting to create a list of top ? results of a specified column(s) of a specified table on a specified database. Sounds tricky, huh? I am attempting to create a key creator for a raw data table. So far I have a list of all raw column names in the table displaying on a checkboxlist control. On the page there is a checkboxlist control on the left. A drop down menu in the middle and a gridview (hidden until the checkboxlist selects an item) on the far right. Once the user selects an item on the checkboxlist control and also selects an item (or leaves it as default) in the drop down menu (values consist of : 1, 2, 3, 4, 5, ect.) the gridview will appear and display the top (value in the drop down menu) results of the selected column in the checkboxlist control (would be nice to allow the user to select multiple items and have the gridview grow as more columns are selected and shrink as they are deselected). I am having trouble figuring this out. So far I have attempted to write a dynamic sql stored procedure, add parameters to the sqldatasource and change the value at runtime, and now I am reaching out to the ASP.Net community.
I'm trying to do a validation for checkboxlist on a server side as all java approaches didn't work. However, probably due to the checklistbox is inside a listview the FindControl is empty. how to find a control inside a listview on a button click event when the button is outside of the listview.
<asp:CustomValidator ID="rfchblAnswers" runat="server" ErrorMessage="* Please, select at least a one checkbox." OnServerValidate="cblCustomValidator" EnableClientScript="false" ValidationGroup="EnterData" Display= "Dynamic" /> Public Sub cblCustomValidator(ByVal objSource As Object, ByVal objArgs As ServerValidateEventArgs) Dim chblAnswers As CheckBoxList = _ CType(lv_qstns.FindControl("chblAnswers"), CheckBoxList) If CType(lv_qstns.FindControl("chblAnswers"), CheckBoxList) IsNot Nothing Then 'it's not working here as it cannot find the control inside a listview Dim boolFlag As Boolean = False For Each li As ListItem In chblAnswers.Items If li.Selected Then boolFlag = True End If Next If boolFlag Then objArgs.IsValid = True Else objArgs.IsValid = False End If End If End Sub
I have a Details view where I want to have a multi-select value, with the choices driven from another table.I need to iterate through the check-boxes in the list, and I do that by using a DetailsView1.FindControl("MyCheckBoxList") to find the check box list.The challenge I'm having now is that if I name the CheckBoxList differently in each of the templates (Item, Edit, Insert), then they each need a separate handler to find the control and iterate through the checkboxes. I can't find a method to fire a handler
I am using datalist where i need to assign my label value to each checkboxlist item.I am using datatable to bind my checkboxlist. when I run my code I can see the values in my local window. Actually not displaying in webpage.
Is it possible to display strings in a CheckBoxList? I want to display different options that I fetch from a database and display the options as strings in a CheckBoxList where the user can choose one option (maybe I should use a RadioButtonList?).
I've the user creation form where a user will be created by entering username. Below that is checkboxlist for UserGroup which is binded with the dataset with the all the usergroup. Hence up on entering the username and checkbox selected(as the user can belong to multiple UserGroups).At database end, there are basically 3 tables-
So when i click create new user, the UserId along with GroupID(whichever checked) is saved into UserToGroup table.Im relative to this kind of process and hence facing setbacks. Can somebody help in end to end process. From front to DB SP.
im learning webforms and asp.net in general and what i have so far is a formview that displays data being pulled from a sqldatasource, but i also want a checkboxlist that can be used to input information and display information. this checkboxlist is insode the formview. the problem im having is that my formview is calling a datasource with an specific stored procedure with one table and my checkboxlist needs to called another stored procedure that has a different table. formviews does not allow you to have tow different datasources so how can i make this possible? ill paste the front end code and the backend code so you guys can see what im trying to do.
I have this peace of code that collects data from checkbox list and concatenates it into a string. It worked fine on lots of pages then i added it to a page that uses a formview update template, and now the name of the checkbox (CategoryList) list comes up as not declared in the script header. Do i need to change the protected sub line to show items in the form view?
