i have application with 2 cascading dropdownlists that got populated using web service, when a value was picked in the first one the second filled with values, now when the second one got selected i want to poulate listview with images links.
View 2 RepliesI just wana know that can I bind an asp listview via javascripts by calling a webservice in c#??
View 2 RepliesI am trying to create a dynamic table that is being built based on the value of a search text box. The Table will have probably 6 columns of 20(max) rows.
My problem is I can't figure out how to return the data from the web-service to the JS function in a way that will allow me to extract the data that I need.
Here is the web-service method I have currently:
[code]....
I am not clear when do I want to use a webservice over a sqlDataAdapter for dataRetrieval. I want to populate a repeater control which I have been doing from a dataTable that I fill from a sqlDataAdapter. Is there criteria when I would want to use a webservice to fill my dataTable?
View 3 RepliesIs it possible to populate a listview with a dataset? I have a function that returns a dataset. Why im asking this is because my SQL is quite complicated and i can't convert it to a SQLDataSource...
Public Function getMessages() As DataSet
Dim dSet As DataSet = New DataSet
Dim da As SqlDataAdapter
[code]...
I have a simple page that looks up contacts using a webservice with a single method written in Linq. On the page, I have both a gridview and a listview with a DataPager to compare the two. I can get paging working just fine with the gridview, but the Linq code has to return all of the data on each call and let the web page pick out only a page's worth... not the best solution. I have been told that a ListView will solve this problem, but all the examples I have been able to find have the Linq code on the web page instead of in a separate layer (e.g. a webservice). Ideally, I should be able to tell the web service to bring back a specific page worth of data (starting record number and number of rows), but how do I get the ListView (or the DataPager) to fire an event that asks for this data?
Here is the ASPX code:
<asp:ListView ID="listPersons" runat="server"> <LayoutTemplate>
<table> <thread> <tr> <th> Site ID </th> <th> PersonID </th>
<th> Person Name </th> </thead> <tbody>
<asp:PlaceHolder ID="itemPlaceholder" runat="server" /> </tbody> </table>
<asp:DataPager ID="Pager1" runat="server" PagedControlID="listPersons" PageSize="5" > <Fields>
<asp:NextPreviousPagerField ShowFirstPageButton="true" ShowPreviousPageButton="true" ShowNextPageButton="false" ShowLastPageButton="false" /> <asp:NumericPagerField />
<asp:NextPreviousPagerField ShowFirstPageButton="false" ShowPreviousPageButton="false" ShowNextPageButton="true" ShowLastPageButton="true" />
</Fields> </asp:DataPager> </LayoutTemplate> <ItemTemplate><tr> <td> <%# Eval("SiteID") %>
</td> <td> <%# Eval("PersonID") %> </td> <td> <%# Eval("PersonName") %> </td>
</tr> </ItemTemplate> <EmptyDataTemplate> No data found... </EmptyDataTemplate> </asp:ListView>
Here's the code behind:
private void DoList(string Match) {
ContactsService cs = new ContactsService();
listPersons.DataSource = cs.Find(Match, 100 ); listPersons.DataBind(); }
and the web serivice:
[WebMethod]
public List<Person>Find(string Match, int Count) { if (Count < 5) Count = 5;
using (DataLayer.ContactsDataContext context = new ContactsDataContext()) {
var Persons = from p in context.Persons where p.PersonName.Contains(Match)
orderby p.LastName, p.FirstName select new Person() {
SiteID = p.SiteID, PersonID = p.PersonID, PersonName = p.PersonName, };
return Persons.Take(Count).ToList(); } }
I am using a ListView and would like to implement the switch from read only mode to edit mode for a ListView item on the client side. Some of this is discussed at: Inline form editing on client side
I am trying to do this by something like:
[Code]....
switchState is a Javascript function that simply hides/shows the DIVs with the readonly and edit classnames. In LinkButtonSave_Click I get the value from TexBoxName but it always contains the bound original value and not the edited value that was entered in the texbox.
Does ASP.NET not postback the textbox value because it is in the ItemTemplate or is it something else that's causing this problem? Could I use a Repeater instead to accomplish this?
This is what i want to do with my website. I want to pull data from an access query and and load it into a listview table. The user will sort through the data on the website and remove the rows she doesn't want. After the user is done, they will click a send button that will email the data to the appropriate party.I have read the access query data into a data table. I have the list view table built, but I am unsure how bind the data table into the listview table. Is this the best route to go? Will binding the datatable to the listview table allow the user to delete rows out of the datatable?
Protected Sub btnView_Click(sender As Object, e As System.EventArgs) Handles btnView.Click
Dim query As New QueryBuilder.SelectQuery("qryVendorReport")
'Fill data table with vendor information
Dim sample As String = ""
Dim results As New DataTable
results = (db.fillTable(query.toSelectQuery))
[code]...
how to bind the results datatable to lvdatasource. I tried a few different ways to do this with no luck. Maybe the syntax I trying to use is incorrect.
How can I manually populate a listview control without sql connection?
View 3 RepliesCurrent code:
[Code]....
It seems that it doesn't have datasource that I usually do. How could I?
Here's my C# cobe behind:
[Code]....
[Code]....
No data is loaded when the button (btnSearchWrd) is clicked. Instead, in the Firefox Error console, it listed these two errors:Error: item is undefinedError: ys.WebForms.PageRequestManagerServerErrorException: Could not determine a MetaTable. A MetaTable could not be determined for the data source '' and one could not be inferred from the request URL. Make sure that the table is mapped to the dats source or that the data source is configured with a valid context type and table name, or that the request is part of a registered DynamicDataRoute.
I'm comfortable populating dropdownlists in a standard webform, but I seem to be having trouble populating them from within a gridview or listview.I know that I'll probably need to use the find control method, I've had a stab at it with the following:
[Code]....
The purpose of this is to allow someone to look at a bunch of records, and in a dropdownlist add an item to a group, but this "group" is in a separate table, so I want to take whatever value that select in the dropdown menu, lookup their user id, and add both bits of information to the other table, so it's technically not even editing, even though i suspect I'll need to use the edititem template?
I have a database table containing scripts for plays/dramas. The scripts can be categorized under 'Theatre and Education', 'Plays for Young People' or both (by using bools to determine whether they belong to said categories);
scriptID: int
theatreAndEducation:bit
playsForYoungPeople: bit[code]....
I want to dynamically populate data in Dropdown box in the Edititemtemplate of the Listview. The below code is showing error "Object reference not set to an instance of an object". The problem is in Findcontrol function. How to solve this.
[Code]....
i want to populate a gridview within the listview.I amm taking reference from the article Populate ASP.Net ListView from database and Repeat columns horizontally using GroupTemplate.
View 1 RepliesIn my project I have a listview which I am binding from code behind. Now I would like to add a droppdownlist for each item in listview. So my question would be:
Is there a way to populate my dropdownlist whit data which I have in a List?
Here is a bit of code to show how my listview looks like:
[Code]....
I'm currently developing an ASP.net application w/ VB as the code behind. I have a page that shows all the user name currently assigned to the system. The problem now is that the page does not communicate directly to the database. Instead, I use HTTPrequest to get all the user names from a different sever. Now I want to populate the listview control w/ the response that I got (and not directly from the database).
View 3 RepliesHi. On my webpage, I have a listview that has a field called BookId. I also have a Detailsview with an ID field. When I add a new record on the listview, I would like to populate the BookID from the Id on my detailsview (there is a one to many relationship between the 2 ids).
View 1 RepliesI am struggling to create a webservice method using LINQ technology and to populate a dropdown in a form. Here is the Webservice code.
[WebMethod]
public
string[] GetAllCountries()
{
LinqClassesDataContext db =
new
LinqClassesDataContext();
var q =
from c
in db.ListContinents()select
c;
return q.ToList() ;
}
And here is the form code behind
protectedvoid
Page_Load(object sender,
EventArgs e)
{
WSClass WS =
new
WSClass();//bool
ds = WS.GetAllCountries();
var v = WS.GetAllCountries();
ddlContinent.DataSource = v;
ddlContinent.DataBind();
}
I have a listview that has been constructed using tables. I have set the DataKeyNames="SomeTextField" among others. This column is currently not visible in the ListView.
I'd like to populate a textbox on the click of any listview record with the contents "SomeTextField" column.
I have a ListView1 control that his <ItemTempleae> has a another ListView2. ListView2 is surrounded by <UpdatePanel> with trigger and also UpdateMode="Conditional". But, I don't know why ListView2 is not being update as it should, I need to refresh all the page to see the new data enter to ListView2 only. What is the problem? How can it be fixed? I think that the problem is something in the structure. There are about 10 ListView2 with updatepanel surronded them, so when I am looking to update a specific ListView2, it doesn't know which one to update because there are lots of them. What to do in order to solve that problem?
View 3 RepliesI have a ListView tied to a DataSource, included in the layout is a Literal control. I want to be able for the user to click the Select button, and then I want to populate the Literal control with some Data. I have it working, but I have to click the Select button twice to get the data to show. My code is below.
Here is the html
<asp:ListView ID="ListView1" runat="server" OnItemCommand="ListView1_ItemCommand" OnSelectedIndexChanged="ListView1_SelectedIndexChanged"
DataKeyNames="TxnID" OnItemCommand="ListView1_ItemCommand">
<LayoutTemplate>
[Code]....
I am new to ASP.NET (2 months) and my very first assignment is to create a website for a municipality. Purchasing as much reading material as possible, I got started and after some time, I have a decent website (coded in C#) that is ready to be internally tested on the departmental webserver. The Web server is running IIS 7 and the pages were developed with Visual Studio 2010. On the main default page, I wanted to implement a slide show using the AJAXControlToolkit which I installed. I watched the ASP.net tutorial [URL] and literally coded my slide show verbatim. I try to launch my slideshow within my default.aspx page and absolutely nothing happens. The steps that I took are
1. Created a webservice (SlidesService.asmx) which generated a code behind file (SlidesService.cs).
2. I created the web method GetSlides() containing a 22 element array which I place in the code behind file.
3. Implement the ToolkitScriptManager establishing my image control.
4. Defined my Previous, Play and Next buttons.
5. Implemented my SlideShowExtender providing my SlideShowServicePath and SlideShowServiceMethod.
Assumptions: In doing all of the above, I noticed that the SlidesService.asmx file needs no code (as I placed all code within the codebehind file). The SlidesService.cs code behind file should reside in the App_Code folder whereas the the SlidesService.asmx file can remain in the root folder. No Button e.g Button_Click needs to be attached to the code behind source file. If I have conveyed my steps properly, can anyone shed some light on why when clicking the play button, nothing happens? Code is listed below.
[Code]....
SlidesService.asmx - code
<%@ WebService Language="C#" CodeBehind="~/App_Code/SlidesService.cs" Class="SlidesService" %>
Can I Use CascadingDropDown without WebService?
View 1 RepliesI am planning to use a Javascript call to a WebService to retrieve data from the database. At the moment I am using Ajax to do this. But since the Ajax is slowing down the performance of my application. I have read in some article that even though Ajax only refreshes the Update panel contents, Ajax does a full round trip to the server. What I need to know is how can I populate a Grid from data coming from a WebService via a Javascript call.
View 3 Replies