Asp.net - One Codebehind Method Handles Two Distinct Dropdowns?
Jul 9, 2010
I have one page with two dropdownlists with different IDs and in my codebehind I have two distinct methods, one for each dropdownlist, with distinct names and handlers.BUT, in my codebehind, only one dropdownlist calls it's method - and sometimes it calls both methods! - while the other dropdownlist never calls its method.I tried cleaning the infamous "Temporary ASP.NET Files" folder I tried rebuilding the solution but the problem persists?
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Oct 26, 2011
Essentially, in C# the left dropdown has all the classes in a file while the right drop down has all the methods, events, properties, etc.In VB all of my controls are in the left dropdown and I have to select them if I want to go to a particular event handler for that control.I find it time consuming to navigate to my btnSave_Click method by first selecting btnSave in the left dropdown and then selecting Click in the right dropdown.Is there a setting or a plugin that can change this functionality?
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Nov 23, 2010
How do you call a codebehind/class method from a gridview in an aspx page? Also, I need to pass the value of databound column to that method.
<asp:BoundField DataField="Precision" />
<asp:BoundField DataField="MyNumber" DataFormatString="FormatHelper.Format(MyNumber, Precision)" />
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Jun 21, 2012
Pretty simple question. I'm quite certain I have the Class, method, codebehind, etc linked properly. Lot's of posts online say that this has something to do with compiling and/or dll/bin
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Aug 18, 2011
If I simply have this:>>
CODE:
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Jul 27, 2010
I'm using Telerik RadControls, in my codebehind I have the following function, a portion of which adds buttons to the footer.
[Code]...
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Jul 13, 2010
I am trying to distinct on multiple columns and get datarows from datatable. but getting error.
Dim query As IEnumerable(Of DataRow) =
(From row As DataRow In SourceTable.AsEnumerable() _
Select row.Field(Of String)("ColumnName1"),
[Code]....
I want another datatable with distinct row based on given columns from SourceTable.
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Jul 30, 2009
I have MDI parent and child windows that were working fine but now clicking on a dropdown doesn't do anything, also scrollbars cannot be moved. Other controls are still ok, buttons and other links are still working. I should also note that if I change the child to load in a separate window all the controls work again.
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Jul 14, 2010
VS2008 .NET 3.5SP1
I've got a MenuStrip with dropdowns and a Toolstrip with buttons. I don't want the button images in the image margin of the dropdown because they are too small to read properly. I can't seem to find the ShowImageMargin property (in either the MenuStrip or the ToolStripMenuItems) to turn the margin off. I've constructed the menu items in the designer.
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Feb 16, 2011
I have set it up to email me should someone submit this form and an error occur and right now should that occur for most integer or datetime fields if they fail to validate then it will show me which fields in the email failed and what was input into them.
Problem I'm having now is to validate the drop downs and the textboxs in a similar way to what I with integer and datetime fields so I can display those also in the email in case they error.
present integer and datetime validation
[Code].....
Summary:- Need vb code to validate if strings and dropdowns are valid and the use of try/catch block is another possible solution but I wasn't able to figure out how to implement validation for that either.
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Oct 28, 2011
MVC 3 VB.NET razor. I have a view that has 4 dropdown boxes in it.. This is for setting up a staff member.. If that staff member is to work certain classes then that class will be set for each day. If he is not then the value needs to stay null. This is a edit view so it may have to be accessed multiple times and still keep the original selectlist values if none changed. The below is what I have right now that is working only on its face. The Old selected value is shown first. However this isnt being returned on the save. The only way that it will save correctly is if I select the value that was set in each box then click save. The next problem is that not all staff members will have classes to work on every one of the 4 days. So how do I set a value to null and keep it that way unless a class Is actually selected.
[Code]...
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Jul 15, 2011
Any resolution to make the cascading dropdowns work as expected when used inside edit mode of AspxGridview. I am using DevExpress Controls.
My requirement is as follow:
If I select country="United States" then populate the "State" combobox and on selection of "State" populate the "City" combobox.
If I select "country" other then "United States" then populate only "City" combobox with cities of selected "country" and no need to populate the "State" combobox. Also I need to hide the "State" combobox. i.e. like
Country State City
ROW1 united states Alaska Douglas
ROW2 Canada Toronto
ROW3 Australia Sydeny
ROW4 united states California Yuba City
Same is required in Editmode also.
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Oct 19, 2010
Consider a MyForm class that contains a shadowed implementation of Show(). It also contains a CreateForm() method, which accepts an instance of the form and calls the shadowed sub:
[Code]....
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Oct 10, 2009
We 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
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Jul 21, 2010
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
[Code]...
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Aug 12, 2011
How 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" />...
[code]....
Will the changes i make to the sql command in the PreRender function hold when I have applied pagination or sorting to the listview?
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Aug 21, 2009
My stored procedure is like this.
ALTER PROCEDURE [dbo].[GetImagesByDesignId]
@DesignID bigint,
@RegID bigint,
[code]....
Problem is i want to get datattable as well as imagecount in codebehind.How can i return back datatable and imagecount to codebehind.
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Dec 22, 2010
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">
[Code]....
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?
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Dec 9, 2010
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
[code]....
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Jun 10, 2010
Get Browsers width in CodeBehind ( C# or Vb.Net )
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Oct 15, 2009
et Browsers width in CodeBehind ( C# or Vb.Net
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Mar 14, 2009
I need to get the DataKeyNames in codebehind of my ASP.NET application (VB.NET). How can I get that?
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Jul 18, 2011
I have copy and pasted some VB.NET and some ASP.NET into existing files in my solution from another to fix a common problem. However, the VB isn't recognising the ID of the asp:Panel controls that I've brought over.
<asp:Panel ID="passwordPanel" runat="server" DefaultButton="SaveNewPWD">
passwordPanel.Visible = False
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Sep 2, 2011
I'm hoping to dynamically change the number of columns in my ItemTemplate of my ListView:
<asp:ListView runat="server" ID="ReportListView" DataSourceID="ReportListViewSDS">
<LayoutTemplate>
<table>
<tr>
[code].....
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Dec 26, 2011
Is it posible to get a value from a javascript variable and use it into visual basic code without incrusting value on any control.
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Dec 17, 2010
I'm using VS 2010 and .net 4. I'm trying to figure out how to make a textbox be multiline and set the rows in codebehind.I'm trying to figure it out for a user control that i'm working on. So in the properties passed through the to user control it will set the textbox to be a multiline or not.
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Oct 24, 2011
I am having trouble accessing a Javascript function from my code behind file. I need to do this as I am using the GoogleMaps JS API to add markers to a map based on addresses retrieved from my database. I have a function called AddMarker that takes in the address as a parameter, so I need to be able to call that from my code behind file in the page_load function.To simplify the question, how I can I call this javascript function to display an alert with a string passed from my code behind file?:
function hello(message)
{
alert(message)
[code]......
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Apr 19, 2012
I have two button as shown below:
1st Button:
<asp:Button ID="btn1" runat="server" Text="First Button" CausesValidation="False"
UseSubmitBehavior="False" />
[Code].....
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Jan 22, 2010
I'm working on a piece of code at the moment that allows the user to enter values into fields. Once the user clicks on the 'save' button I am checking those fields against certain conditions (essentially calling a bunch of stored procedures to assess the values). If any of these 'rules' are met, I need to generate a popup that informs the user that certain values need to be fixed before they can continue for some of the conditions, and for others just to inform them of what conditions may need their attention. how do I generate a popup box in my codebehind if the conditions are met?
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Mar 23, 2012
I have a form where a user can delete a record, and I want a pop up message where the user has to click okay to confirm the delete.
Delete button:
<asp:Button ID="btnDelete" runat="server" Text="Delete" UseSubmitBehavior="false" OnClick="btnDelete_Click" OnClientClick="confirmation();" />
Confirmation function:
function confirmation() {
var answer = confirm("Are you sure you want to delete? This action cannot be undone.")
}
So right now, clicking the delete button executes the btnDelete_Click Sub in the code behind regardless of whether you click okay or cancel in the pop up box. I know I can add if (answer) { -- some code here -- } in my javascript function, but is it possible to use javascript to execute code from the codebehind? Or is there another way to do this?
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