I have two dropdown within a DetailsView and I want to work in cascade, the idea is that an area contains various issues and these issues depend on the selected area, but I get the following error: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.
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I have been practicing with the online tutorial on how to do this except my dropdownlist just gets a "method error 500" in the dropdownlist.
View 1 RepliesI have the following code in my codebehind Page_Load function that sets the default selected value of a dropdownlist in detailsview based on the name of a record returned from a sql data query.Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
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I have two cascading dropdown lists I'm attempting to bind to two separate SqlDataSources each.
These dropdownlists exist in a FormView's EditItemTemplate. Inside the EditItemTemplate two sqldatasource controls exist that populate the department and the jobname. The DeptID and the JobID are the primary keys in those tables. This creates the "cascading effect" between departments and jobs. When a department is selected, only the jobs associated with that department appear.
This piece is working properly.
<asp:FormView ID="frmProfile" runat="server" DataSourceID="sqlDSProfile"
DataKeyNames="EUID" style="margin-top: 0px">
<EditItemTemplate>
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Error is ddlgvRooms' has a SelectedValue which is invalid because it does not exist in the list of items.Parameter name: value
I read a lot of people having issues with this particular problem but non of the fixes have worked for my case.I have tried a few different things such as setting appenddatabounditems="true" also tried to set in the itemcollection a default null value.Most of the forums post on this that I read were from a couple years ago im hoping they fixed this bug already and I am just overlooking something.I am trying to get my cascading dropdownlist to work in a gridview edittemplate fields. I created these in my detailsview on insert everything works great.
MySetup Basically I have a webmethod that has 2 functions getRooms and getJacks that are supposed to grab the data from the 2 datasets that I have created.The Datasets get their data from a couple of SQLSTOREDPROCEDURES.My aspx page dropdownlist and AjaxCDDL looks like this
<EditItemTemplate>
<asp:DropDownList ID="ddlgvRooms" runat="server"
SelectedValue='<%# Bind("intRoom") %>'>
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Im trying to do bind a dropdown list to a details view but keep getting an error about the dropdown list ID field:
<asp:TemplateField HeaderText="Approval">
<ItemTemplate>
<asp:DropDownList ID="Approved" runat="server" DataValueField="Approved" SelectedValue='<%#Bind("Approved") %>'>
<asp:ListItem Text="Approved" Value="Approved" />
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The error message as follows:
'Approved' has a SelectedValue which is invalid because it does not exist in the list of items.Parameter name: value
What is the proper way to attach the value of the dropdownlist to my object so that it can be properly created in the database? Most of my searches keep telling me how to bind a dropdownlist to an object data source, but that is not what I need to do. This is a basic drop down list of 2 items that will never change.
I have a window having 2 dropdowmlists(schemename-SN and propertyno-PN) , one chkbox ,one "VIEW" button.SN has options "all" with value=0 and many other options with respctive values.Now,i want the code should behaves as follows:
1.0n window onload, SN must b visible bt PN nt.
2.if i select SN other thn All...the PN shud b visible and if i select "All" ,PN hides.
3.when check box is checked- PN hides,and if it is unchecked- PN visible..
Important:-This whole ddl n chk box are in updatable panel,button is nt in that.I want a browser compatible code so javascript can't b used directly(cz they give problem in mozzila and chrome).Right now, i have done this JavaScript and its is working fine.
function window.onload()
{
DisableProperty();
}
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but this code is not browser compatible.here onload,onkeyup and onclick functions are used , but they dont work in other browsers except internet explorer.
I am trying to have cascading comboboxes within a datagridview.I have it partially working. dataset1 has 2 tables, with a parent-child relation built inDatagridview1 contains:column 1: combobox, bound to bindingsource 1 which is bound to dataset1column 2: combobox, bound to bindingsource 2 which is bound to bindingsource 1when column 1 is selected, column 2 choices are limited to those related to column 1however, if column 2 is chosen in a row that previously had data, and was loaded with the form, then its choices stay the same as the last row where column 1 was physically selected before column 2.I seem to need to refresh the binding source somehow to emulate how it works if I was to go into column 1 and make a selection by hand.H
View 1 RepliesI have two comboboxes say
DDL 1 : Artist
DDL 2: Albums
And a Gridview containing (album name, artist name, no.of tracks, year, etc), What I want to achieve is: when an option(artist1) in DDL1 is chosen, then the albums related to DDL1 needs to display in DDL2 and also it must update the appropriate values in the gridview (artistname, albums(album name -no of songs, year)etc... based on the selection made (language: Asp.net(VB)-Sql server ).
how you populate cascading comboboxes? I have one combobox on one form, from which I'm trying to populate another combobox on another form. The first combobox contains Locations while the second combobox contains offices for whichever location is selected in the first combobox. I would like it to work as follows: user clicks on first combobox to select a location, and then the second combobox lists all the offices for that location.As of right now, the second combobox is just displaying the first office that is in the first record for the respective database table it is pulling from.
View 2 RepliesI am writing a mdi app (vb 2008 express) where i want the child forms to start in the same position i.e. on top of each other. Currently the forms are casacading. I know you can set the default mdi layout in the mdiParent using [code]....
View 2 RepliesI have found a couple of examples on the internet to do this but really struggling to get it working in VB. (Tried a converter but had mixed results) I need the selection options of a Dropdownlist to be populated based upon the differing values in the first dropdown list.
Can anyone help with a releativley simple example in VB? Not fussed if the values are "hard coded" in the script. Or a SQL bit that pulls the data from a table
How I can populate a combobox (combobox2) based on the selection made from another combobox (combobox1)? They are on different forms. Combobox1 lists locations, while combobox2 lists offices for each location. I would like it to work so that when the user clicks on combobox1 and makes a selection, the 2nd form loads with combobox2 showing all the offices for the selected location.
View 6 RepliesI Need a working example of a cascading drop down list box written in vb.net for my ASP.Net MVC application. I tried converting three examples written in C# but can't seem to figure it out and I have given up.This is my first .net application so I'm a newbie. The biggest problem I'm having is just don't understand the java script code in the views.
View 3 RepliesI have a DetailsView that looks just about perfect. The only thing is, there is one field that actually gets its information from another table. It is an ID field that is linked to another table in the database and I was hoping that there was some way to get that one field in the DetailsView to pull the information from the other table.
Is there a way to maybe add a + (plus sign) next to the PicklistID and then have it show the results of the other query? (SELECT TEXT FROM PICKLIST WHERE PicklistID = @PicklistID???)
UPDATE 1/11/12: The PICKLISTID in the table PICKLIST is not unique or a primary key so I cannot reference it from the SURVEY table. Is there a way to give these 2 columns a relationship so that I can just change my SELECT statement in my DetailsView to include the PICKLISTID?
UPDATE 1/23/12: I'm still stuck on this. I am not getting how to make this work at all.
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1. A dataset contaning all the tables, views and stored procedures from a db in the Data Sources
2. A stored procedure that makes a query using a parameter
3. 2 comboboxes with their DataSources defined
The first combobox gets populated with a stored procedure (with no params, through the Combobox task). When the user selects an item from this combobox this should trigger an event that populates the second combobox with the second stored procedure that requires a parameter.
Since the Dataset is already add to the Data Sources and contains all the procedures I need, I don't wanna to create more datasets or calls to the data base, however I don't know how to set the query using the procedure I already have passing the parameter.
I have several entities I need to make IEquatable(Of TEntity) respectively. I want them first to check equality between EntityId, then if both are zero, should check regarding to other properties, for example same contact names, same phone number etc. How is this done?
View 1 RepliesJust want to ask, can we use multiple objectdatasource in detailsview?
Example, i have 2 different tables with same fields.
Insert, Update much work properly.
I have a DetailsView1 control that is databound in many fields but also has fields that I prepopulate upon loading the page for the first time. Example being fields named ROW, FLAG, PRINTED. The user can then input data into the other fields Like FIRST NAME, LAST NAME, COMMENTS and press INSERT. I should also mention that these fields are templatefields.
<asp:TemplateFieldHeaderText="Row"SortExpression="Row"><InsertItemTemplate>
<asp:TextBoxID="TextBox1"runat="server"Text='<%#Bind("Row")
%>'></asp:TextBox>
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Then the insert of the data begins and creates a SQL record. This works as designed the first time thru.The problem begins when I try to populate the same fields for the next record using the same logic that I used the first time but the fields will not come to the screen populated the second time. What do I need to do in order to get the fields in the DataView1 to be populated after the first INSERT command has cycled thru its process?
In this project that I'm creating, I'm creating a mock-up of a page that uses a DetailView (something I saw in a blog) that seems to fit my needs. However, I don't want the data to be bound to anything.So, I added the control and then I started adding the appropriate mock-up columns to it and tried to render the control on the test page. Where the HTML that ASP.NET should generate is nothing.Here's my code (there's a 'real' DetailsView control, then a button and then a blank testing Details view control):
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I have the EXACT same code on another form and it works great, on this form though it is giving me this when loading that is happening when trying to populate the cboItemCode and cboLinePart combo boxes based on what is selected in cboLine (which will be the initial load value)[code]It is happening, I guess on that CInt( in the sql, but why?I don't understand why it is considering cboLine.Selected value as a "DataTypeRow" when it is just looking at the value member? If I remove the CInt() for the cboLine.SelectedValue it will give another error saying "Operator '&' is not a defined for "SELECT LinePartID, LinePartName," and type 'DataRowView'.[code]
View 3 RepliesI'm attempting to reference the text from a label in a DetailsView in my CodeBehind, then pass it through a Stored Procedure.My DetailsView is DetailsView1, and the two fields are lblDialID & lblCallbackID. I've converted them to TemplateFields. The data is populating properly, but when I'm attempting to grab the data and pass it, I'm not getting any results.The Stored Procedure is not performing it's action, and a Response.Write on the variables does not produce any results so assumedly I'm just grabbing thin air :)
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Could this also be because I am passing a string, but the SP is taking it as an INT? This shouldn't pose a problem though?
When using a scanner to insert into a detailsview the scanner scans and then presses enter. How do I either redirect the enter to be a tab, or just stop the enter key from triggering the insert method?
View 1 RepliesI have developped a usercontrol, but I can't seem to find how to databind on a property of the usercontrol in a detailsview.[code]
View 1 RepliesI have a DetailsView Control but need help with binding, updating and inserting hookup. My code below does not bind and open my DetailsView as I expect it to (either in Edit or insert mode when my page loads.[code]
View 1 RepliesWhen in insert mode detailsview, there are some parameters that I would like to disable or hide. The columns are autogenerated.
Doesn't work:
DetailsView3.Rows(5).Visible = False
or
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I'm trying to design a detailsView form which contains [classes] --< [studentClasses] >-- [students] tables. There is a many to many relationship between [classes] and [students] through the third table [studentClasses]. I want to design the detailsView of [classes] such as that all [students] will be listed in a listbox but related students that take the class will be highlighted. And when I select/deselect students from the listbox and save I want the changes to be saved to respective tables.
View 2 RepliesBackground: I have a GridView which gets populated from an SqlDataSource via DataSourceID. The rows show some summary data from an SQL View. Upon clicking a row, I would like to take my user to another page with a DetailsView control which gets populated with the full set of values from the DB related to the row clicked. My user should be able to edit the data, download files associated with the record, and create a new record of a different type based on said data.
Error: All examples that I've found for Clickable GridView rows end up with some variation of the error Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.
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I've got a DetailsView which has some static fields defined in my markup and adds some extra fields dynamically in the VB codebehind. It should be noted that the DetailsView lives in an UpdatePanel.Assume that I would like to get inventory information for a number of warehouses, but I only want to see those which have stock on hand. In addition I have some static information such as product, sku, etc.
The problem I was having was that every time I clicked the "Details" button it would just keep appending the dynamic fields to the end and never re-rendering the table. I figure I either need a conditional or to tell it to re-render somehow. I suspect this problem arises from my use of the UpdatePanel but it's important for the user experience of my customer to keep this.
'Warehouse Stock by Location
Dim stockDT As New DataTable
For Each row As DataRow In stockDT.Rows 'Add column for each Warehouse that has stock
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I'm trying to populate a date from a bound text field in a DetailsView. I keep getting a error when a DBNull is in the column. How do I avoid the DBNull when populating the text field.
My code is as follows:
<asp:TemplateField HeaderText="CBYD Clear Date">
<EditItemTemplate>
<asp:TextBox ID="CBYDExpDate" runat="server" ReadOnly="true" Text='<%# IIf(Eval("CBYDDate") is DBNull.Value,"", String.Format("{0:MM/dd/yyyy}", Eval("CBYDDate").AddDays(30)))%>' />
</EditItemTemplate> </asp:TemplateField>