Asp.net - Ajax Cascading Dropdownlist Web Method In .Net?
Sep 7, 2011I have been practicing with the online tutorial on how to do this except my dropdownlist just gets a "method error 500" in the dropdownlist.
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Asp.net - Cascading DropDownList In A DetailsView
Apr 25, 2012I 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.
[Code]....
Asp.net - Double Databinding Cascading DropDownList To Two SqlDataSources In A FormView
Feb 7, 2012I 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>
[Code].....
Asp.net - Get The Cascading Dropdownlist To Work In A Gridview Edittemplate Fields?
Sep 14, 2011Error 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") %>'>
[code]....
Populate DropDownList In Asp.net 2.0 Using Ajax?
Aug 6, 2009I am new to Ajax and have a rough idea about Ajax. I am developing a website having a feedback page in which, i want to populate the state/city DropDownList box depending upon the value selected in country DropDownList box.
I have seen some examples downloaded online but they are not working in my application due to many possible reasons, some of them may be the feedback page in my application is a content page, the web application is asp.net 2.0 web application, i don't have any additional ajax tools or scripts installed.give me the solution that should work with asp.net 2.0 web application (in VB.NET) and the feedback page is a content page. I don't want to add custom controls. I want to do it straight away with javascript or vbscript using XMLHTTP object.
After everything is set right with Ajax. What if the browser doesn't support Ajax? What should i do in such case?
Unknown Web Method Using Ajax / Jquery
Apr 2, 2012I'm trying to pass a date into a DB Query function backended by VB.NET but am having problems with the webside of things.[code]
View 2 RepliesAjax - Passing Instance To Shared Method In .NET?
Nov 4, 2010I have been thrown in at the deep end with an existing VB.NET project at work. I have never used VB.NET before so I am struggling a little. Does anyone know how to solve the following.I need to pass an instance to client side and then pass it to a shared method in order to access instance methods from when the shared method.The starting point is a fileupload control within the HTML of my Contacts.aspx file:
<asp:FileUpload ID="DocUpload1" runat="server" onchange="CallMe();" />
The onchange event calls a javascript method, see below, this uses AJAX PageMethods to called a Shared method in my code behind This is the script code which is in my Contact.aspx file
[Code]...
If anyone knows the solution please could they update the code as I probably won't be able to understand if you just give a description. I just hope I am along the right tracks.
Jquery - Ajax Post Method Not Working?
Dec 20, 2010I am using jquery so using ajax to post data, but for some reason when i click on submit, the page doesnt go from aspx to aspx.vb on the back side.here's my code -
$(document).ready(function() {
$("#btnsave").click(function() {
var firstname = $("#" + '<%=firstname.ClientID%>').val();
$.ajax({
[code]....
new_class is my webmethod in the vb.net side. Now if i put an alert in the btnsave onclick function, i see the firstname value in the alert. But the page does not call the new_class function after that.
Javascript - Pass Page Or Master Page Object To AJAX Page Method
Oct 5, 2010I wrote a page Page method in my aspx page. in web service method I need to call FindControl method return textbox and get text box value. But my findControl will take MasterPage object to iterate.
see my code
<script type = "text/javascript">
function ShowCurrentDateTime() {
$.ajax({
[Code]....
How to pass Master Page object or Page to Page method?. So I can use in Sared method.
Is there any way I can access Textbox value directly in Page method? I need access couple of controls in Page Method.
Browser Compatible Code To Disable A Dropdownlist When Another Dropdownlist Is Clicked Or A Checkbox Is Checked?
May 26, 2011I 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();
}
[code]....
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.
Cascading Combobox Within A Datagridview?
Mar 3, 2009I 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 RepliesCascading ComboBoxes And Displaying GridView
May 10, 2012I 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 ).
Populate Cascading Or Dependent Comboboxes?
Feb 12, 2010how 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 RepliesStop Mdi Child Forms From Cascading?
Aug 29, 2008I 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 RepliesAsp.net - Populate DropdownList Based Upon Other DropDownList VB?
Jun 1, 2009I 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
Forms :: Populate Cascading/Dependent Comboboxes
Feb 12, 2010How 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 RepliesJquery - Getting Example Of A Cascading Drop Down List Written In .net?
Jun 26, 2009I 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 RepliesCascading Comboboxes And Fill It With A Stored Procedure With Parameters?
Jun 5, 20121. 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.
VB - Cascading IEquatable(Of TEntity) - Check Equality Between EntityId
Mar 14, 2010I 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 RepliesConversion From 'DataTypeRow' To 'Integer' Is Not Valid / When Populating Cascading Comboboxes
Mar 20, 2010I 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 RepliesStrongly-typed Generic Method Invokes Its Argument's Base Class Method Instead Of A Shadowed Method In T?
Oct 19, 2010Consider 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]....
Combobox - .net Cascading ComboBoxes Connected To DataSet From Access - Changing Units And Decimal To Fractions?
Oct 2, 2011I have a DataSet with a DataTable that has several numeric columns of Data. The numeric data is composed of distances given in U.S. Standard units. I currently have my ComboBoxes set up and working, but I need to expand on what I currently have in two ways.I need to be able to convert the Decimal numbers in my data column being displayed to Fractions, is there a way to do this and maintain databinding? In this case its the Display Member of the data source...I need to be able to display my drop down options in different sets of units... I've written Unit Conversion classes to help take care of this, but I don't know if I can somehow do this as well and maintain databinding? I'd like to convert the units on the display members as well...
Private Sub ComboBox1_SelectedIndexChanged(sender As System.Object, e As System.EventArgs) Handles ComboBox1.SelectionChangeCommitted
Select Case ComboBox1.SelectedItem
[code]....
What is the best approach for using ComboBoxes when dealing with issues such as displaying fractions and units...
Populate Dropdownlist From Another Dropdownlist?
Jan 15, 2012I'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 RepliesCascading Combobox - When Change Cb1 - Change Cb2 And Click Save Button - Cb2 Seems To Be 'lost
Feb 15, 2012I have two combobox in a form: Cb1 and Cb2
When I load the form, Cb1 and Cb2 are connected to a bindingsource.
When I change Cb1, the code (below) changes Cb2 to show only the items according to Cb1
This is working fine.
The problem is when I change Cb1 , change Cb2 and click the save button..... Cb2 seems to be 'lost'...
I'm using VS2008.
CODE:
Does Calling The Dispose Method On A Windows.Forms.Timer Call It's Stop Method
Nov 12, 2009Does calling the Dispose method on a Windows.Forms.Timer call it's Stop method? Or should I stop the timer before I dispose it?
View 5 RepliesInheritance - Create A Method Called StartWorking() And Want FrmChild To Inherit - Method
Nov 25, 2011I have a large problem with inheritance in vb.net. The problem is the following:
I have 2 forms => frmBase and frmChild
In frmBase i want to create a method Called StartWorking() and i want frmChild to inherit this method.
But here is the tricky thing: when frmChild.StartWorking is called i would like the following => without calling MyBase.StartWorking()
I want frmBase.StartWorking() to be executed first and after a test in frmBase.StartWorking if blnValue is true then frmChild.StartWorking has to be activated. if blnValue is false that frmChild.StartWorking cannot be activated.
Use The ToString Method And A Counter To Concatenate A File Name Into A String Variable From The Image.FromFile Method?
Dec 18, 2010I have nine pictures that I need to animate -I need to use the ToString method and a counter to concatenate a file name into a string variable from the Image.FromFile method. Once the counter reaches its maximum value, and the last picture is displayed, the counter should be reset to zero or one depending on how the first image file has been name. Also a static counter variable should be incremented in the time routine. what I have so far -- I know what I have to do; however, I just do not know how to code this properly.. Right now I have this going thru a button procedure but it needs to go through a timer.
[code]....
Constrain A Generic Method / Extension Method To Numeric TYPEs Only?
Sep 16, 2010Write an overload for every numeric type or if possible constrain a generic extension method to just numeric types.
View 2 RepliesDifference Between My.Computer.FileSystem.WriteAllText Method And The IO.StreamWriter Method?
Jun 2, 2011I just need to know what is the slight difference between them so I know which one to use everytime.
View 5 RepliesGet The Name Of Parent Method/class/file Name Inside Other Method Call?
Feb 16, 2010I will try to explain what I need.Let's say that I have a class like this:
Public Class Example1 Public Sub ToBeCalled()
[Code]...