I am successfully able to add new items to a drop down list using Javascript.
The script I am using is
function FillJavaScriptValues() {
On adding items in it ,shows an error: "Dropdownlist does not allow multiple selection."But when i tries to print the selected item it shows null exception.
View 6 Repliesusing System;
using System.Collections;
using System.Configuration;
[code]...
I have a formview that when in insert/edit mode, has a dropdowlist and a linkbutton. The linkbutton opens a popup with another formview that allows the user to enter new items that are required to be added to the dropdownlist. When the popup closes, it adds any new items to the dropdownlist options (there may be more than one item added). The purpose is to prevent having to have my users partially add/update a record, go create a new item for the dropdownlist then have to come back and edit again since any new items won't be known until they are needed.
At first, I recieved the 'invalid postback or callback' warning and began reading up on the issue. Though there were several forum posts and web articles, most seemed a few years old so I thought I would find out if there were any subsequent changes that might help me out. I'm using vwd2005/ASP.Net 2.0 and do not have ajax (not available on my corporate web servers). In the page directives, I disabled EnableEventValidation but then I found that while other controls were updating, the value set in the dropdownlist was not and I had to make 2 edits anyway. Since new items in the ddl won't be around when it is rendered, i've read that I can't make use of registerforeventvalidation. ps. i have thought that i could save my viewstate, browse away from the page instead of use a popup, then restore the viewstate, but I'm concerned about being able to update the ddl while retaining the viewstate.
I have a asp.net list box control in which i populate items using Jquery by using some code like ..
$("#MylistBox").append("<option value='somevalue'>Someitem</option>
dynamically . but in code behind when i use MylistBox.Items is always showing Count 0 no matter how much items add.
I have two DropDownLists; DropDownListStart displays the hours 09:00 - 19:00 and DropDownListStop displays 10:00 - 20:00. When the user chooses one of the hours in DropDownListStart I want the program to adjust what's shown in DropDownListStop so that the first hour shown is one hour after the hour chosen in DropDownListStart. How can I do that in code behind (c#)? An example: if the user choses 13:00 in DropDownListStart I want DropDownListStop to display only 14:00, 15:00, 16:00, 17:00, 18:00, 19:00, 20:00.
View 12 RepliesI removed some items from a dropdownlist, and now I want to re-initialze the items which I have on aspx file.
<asp:DropDownList ID="s1" runat="server">
<asp:ListItem Value="0.00">Select</asp:ListItem>
<asp:ListItem Value="0.25">0.25</asp:ListItem>
<asp:ListItem Value="0.50">0.50</asp:ListItem>
<asp:ListItem Value="0.75">0.75</asp:ListItem>
<asp:ListItem Value="1.00">1.00</asp:ListItem>
<asp:ListItem Value="1.25">1.25</asp:ListItem>
<asp:ListItem Value="1.50">1.50</asp:ListItem>
<asp:ListItem Value="1.75">1.75</asp:ListItem>
</asp:DropDownList>
Such as I removed "1.50" and "1.75", and when a button clicked, the dropdownlist will initialze again with these 8 items. How do I do that?
Is there a way to click on the previous or next button to change the value of the DropDown list? Do we need to use the javascript?
View 1 RepliesI have dropdownlists in Gridview. I need to dinamicly change content of dropdown on client with javascript. Ok, I know to do that. But the problem is when I send data to server changes in dropdownlist does not see. On server I have old items. How can I change items in dropdown on client with javascript and than see that items on sever when postback data?
View 5 RepliesI want to add items to a dropdownlist with values return by a webservice which will be called from javascript without cascading extender...
View 3 Repliesi'm using VS2005 and when i drag and drop an image button, i can't access it from code behind. the following is an example of an unaccessible imagebutton
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After much research, no solution can be found to do what I want by combining these two controls. Currently, I have a repeater control which, in page_load, takes the querystring and queries the database accordingly, puts the resulst in a datatable, and binds the datatable to the repeater. Everything works fine, no problem there. It's just that I have many columns coming from the query and there are many rows as well. So, I thought it would be easier to incorporate the accordion, so that the header of each accordion pane would show some unique fields (name, whatever...) as the header, and the rest of the many fields in the content. This way, there would be many closed accordion panes showing the name from the row returned. If the pane is clicked, the pane would open and show the rest of the results.
The problems I've had are that the repeater is not accessible from the code behind if it is inside the accordion. But I'm sure I wasn't doing it right anyways. I'm just trying to have an accordion that has as many panes as there are results from a datasource. If there is something other than a repeater that you can suggest, or the correct way to incorporate the repeater in the accordion to do what I want, suggest whatever! I just need to format how the results display how I want, unlike a gridview (I used tables in my normal repeater, and that worked fine, I just need to get that repeater to work inside of the accordion).
(and I know this isn't the section to ask about the accordion, but what is the AccordionExtender? It's not in the toolbox, and I can't find much online. It won't be recognized by Visual Studio, so I don't know what to do. If I could get that, I feel like it could solve my problem, as I found a possible solution online) I don't need to post my code, as it's a simple repeater, and trying to integrate it within the accordion isn't working no matter which way I try since I can't DataBind() in the codebehind. And yes, I tried to FindControl within the accordion but it wouldn't find the repeater.
I have a page that i created a few weeks back.. had a few controls on the page.. everything worked and works great. Now this past week we had to me some changes to the page, adding a few more controls to the page.. the issue is that now, all the new controls.. (standard .net controls within VS2008) are not accessible from the code behind..
Example, if i add a textbox today to the page.. when i go to the code behind and begin to type textbox1. intellesense doesnt do anything.. and if i complete the line i get a wavy line under it..
In order to gain access to the textbox i have to add this to the code behind
protected Textbox textbox1;
protected void DDLzone1_SelectedIndexChanged(object sender, EventArgs e)
{
BindDistrict();
}
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here when i click on ALL item from ddlzone1 it just "ALL" item in ddldistrict
i want when i select "ALL" item from ddlzone1 in ddldistrict14 show all data from database
I have a web page that I am converting from classic ASP to ASP.Net. There are a bunch of "Select" controls (DropDown Boxes) that I am changing to DropDownList controls. I have set the "runat='server'" in all of these controls. However, when I go to the code-behind, they are not visible/accessible. I have tried to "clean" the solution and rebuild it and the controls still won't show.
View 19 Replieshaving trouble only adding the checkboxstatus's that are checked to the gridview.
Protected Sub atasks_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim tasknamelist As New List(Of Boolean)
For Each row As GridViewRow In GridView1.Rows
' Selects the text from the TextBox
Dim checkboxstatus As CheckBox = CType(row.FindControl("tasknamebox"), CheckBox)
tasknamelist.Add(checkboxstatus.Checked) [code]....
I have a PlannerShiftView user control in the root folder of my ASP.NET web site. In my App_Code folder, I have a ShiftViewTemplate class that needs to instantiate a PlannerShiftView (for a TemplateField in a GridView). The problem is, the following code doesn't compile because the PlannerShiftView type is not available in what I deem to be the App_Code 'phantom namespace'.
Please can somebody explain to be what is happening here, as well as what to do. I know I can just move the ShiftViewTemplate out of App_Code, going against convention and without explantion, but that is something of a hollow victory.
I've tried creating checkboxes, literalcontrols and textboxes. I need to generate checkboxes dynamically, depending on how many types of <whatever> the user has put in. I know how to do this (I think), but the problem is the controls don't work as they should.
If I create server controls, then for some reason I can't change the value with javascript. If I create client controls, then something appears to happen with the id so the server can't fetch the value (it doesn't recognize the id, allthough it's there in the html)
I can't use a regular checkbox with autopostback because there is to much happening at page load. On other pages on the site, this works, but on those pages the controls are not created dynamically.
i have defined profile properties in my web config file but unable to access them in code behind. even profile object is not available. i have to writer fully qualified name like System.Web.Profile. below is my web config
<profile>
I'm dynamically adding a DropDownList to the GridView in edit mode and I have set the TextBox Visibility to False. In edit mode I can see the DropDownList and I'm able to select an Item from the DropDownList but not able to access the SelectedValue in RowUpdating Event. How to get the selectedvalue of this DropDownList?
Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridView1.RowDataBound
If e.Row.RowType = DataControlRowType.DataRow And (e.Row.RowState And DataControlRowState.Edit) > 0 Then
Dim ddl as DropDownList
FillStateList(ddl)
e.Row.Cells(4).Controls.Add(ddl)
ddl is the DropDownList that is added dynamically. And the default Textbox that is in the Edit mode is set to invisible. So there are actually two controls in the same cell in edit mode(TextBox is invisible).
DirectCast(Gridview1.Rows(e.RowIndex).FindControl("ddl"),DropDownList).SelectedValue
If I use the above statement I'm getting NullException.This is Probably because its a BoundField. Is there a way I can access the DropDownList 'ddl' SelectedValue?
I have a formview that has several dropdownlists in the EditItemTemplate. Some of the dropdownlists are added using placeholders. I can add and populate their listitems without any problem. But when I update the record, none of the controls can be found--even though when I look at the page source they are there. I first strated out using asp:ControlParameter in my sqldatasource updateparameters, but even referencing the control as myform$mycontrol did nothing. So then I moved to code behind on the sqldatasource.updating event (code is attached). The only controls I cannot seem to bind to the update are those added via the placeholder.
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The item at the dim statement is not an item added using a placeholder and does not get a null reference exception (I used that to prove during debbugging that I wasn't losing my mind)--however, all the items being used to get the parameter values are getting null reference exceptions and are added via placeholders. Here is the code I'm using to set up the dropdownlists:
[Code]....
how to get the value of these controls so they can be used in my update?
I have a div runing on server in which i programmatically add images. On post back, id like to get some attributtes from those images, but they are nowhere to be found. What am i doing wrong?
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im tryin to upload files to the database using the FileUpload. the upload take place. when i download the file again ( word document, excel document.. a text document (.txt), a winzip file) , it turns that the file is corrupted and cannot be opened.. an image file or an mp3 file doesnt present this problem. my application is developped usin vb.net 2010 and sql server 2005 as the database..
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How to maintain view state for the dynamically added html controls to a table using javascript(Below is the javascript which I am using to add HTML Controls Dynamically"). Because during the postbacks if I found any error while validating the data present in the dynamically added html controls, the controls are loosing their state and again I need to start adding rows and add data.
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Currently,below is my code.
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection("Data Source= E\SQLEXPRESS;" + "Initial Catalog=k;Integrated Security=SSPI");
SqlDataAdapter adapSel;
string mySQL = "select column_name from information_schema.columns where table_name='examtimetable' '" + dd_list + "'";....
I receive an error "Incorrect syntax near 'System.Web.UI.WebControls.DropDownList'."