I 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 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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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'm using Telerik RadControls, in my codebehind I have the following function, a portion of which adds buttons to the footer.
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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 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
I 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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Just 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'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>
I'm simply databinding the data (containing date values) I got with a DataReader as in the following code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim id As Integer = Request.QueryString("id")
'Start connection
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I need to be able to hide 2 options that are displayed from my dynamic bulletedlist (which is built inside of a DetailsView). Every time I try writing a loop through the BulletedList, I get an error saying that it is not a collection type, so I thought I could loop through the DetailsView to find the items I want to hide.
I can't change the SQL because this particular bulleted list gets used on 2 different pages, it's just that on one, I only need to show 2 of the 4 items that are associated with the ID.[code]...
I have a DetailsView which has two fields - one that is visible, one that is not. The first the user fills out, the second I want to auto-populate. Unfortunately, I haven't been able to find a way to set the value in this second invisible field. I've tried adding code like this to the Page_Load:
If Not IsPostBack Then
DetailsView1.DefaultMode = DetailsViewMode.Insert
Dim txt1 As TextBox = DirectCast(DetailsView1.FindControl("Type"), TextBox)
txt1.Text = "administrator"
End If
But this returns an error of "Object reference not set to an instance of an object." Any ideas on how to accomplish this - either using the method above or another method?The hoped for end result is that when a new record is inserted via the DetailsView that this record will include the username (entered by the user) as well as the "type" of "administrator"
For example lets say I want only admins to be able to see and edit CustomerID in details view, moderators can see this value but it is not editable, and regular users cannot even see it.
View 2 RepliesI'm trying to write a program that selects an item (Area Code) from a combobox and this list gets the city that was associated with this area code (another comnbobox list)
View 1 RepliesWe currently have a asp.net website with some modules developed in VB.Net & some in C# (not just classes but also individual aspx pages and code behind). We figur
View 2 RepliesHow to retrieve the particular row of detailsview into textbox on page load event if details view defaultmode is readonly..i want to retrieve the email id from detailsview email row in textbox1 on page load event ?
View 2 RepliesHow can I change my selecommand, and keep it through the remainder of the page (when using pagination, sorting)?I have a page of checkboxes:
<input type="checkbox" name="checkbox_1" />
<input type="checkbox" name="checkbox_2" />
<input type="checkbox" name="checkbox_3" />
<asp:Button runat="server" Id="CustomButton" text="Create Report" PostBackUrl="report.aspx?"/>
Then on report.aspx I want to generate a standard listview based on the selections in the checkbox.
<asp:ListView runat="server" ID="ReportListView" DataSourceID="ReportListViewSDS">
<LayoutTemplate runat="server">
...<asp:PlaceHolder runat="server" ID="itemPlaceHolder" />...
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Will the changes i make to the sql command in the PreRender function hold when I have applied pagination or sorting to the listview?
My stored procedure is like this.
ALTER PROCEDURE [dbo].[GetImagesByDesignId]
@DesignID bigint,
@RegID bigint,
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Problem is i want to get datattable as well as imagecount in codebehind.How can i return back datatable and imagecount to codebehind.
I'd like to impersonate a specific user in code to perform some file manipulation on a remote machine. The problem I'm having is that I am unable to get impersonation to work. I'm using the code from the Microsoft article found here: How to implement impersonation in an ASP.NET application
I'd like direction on how/where to start the debugging process. Here are my files:
Test.aspx:
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Test.aspx.vb" Inherits="TraceFile_Test" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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I replaced real credentials with myUserName, myDomain, and myPassword for the post.
The web server is a Windows 2008 server running IIS 7. I'm not a server guy, so I don't know where to being the troubleshooting process. Is the issue with the code or server side?
Why can I not access to the storyboard when using WPF. In Silverlight, the exact same code works.
Codebehind VB
Public Class UserControl1
Private Sub UserControl1_MouseLeftButtonDown(ByVal sender As Object, ByVal e As System.Windows.Input.MouseButtonEventArgs) Handles Me.MouseLeftButtonDown
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