C# - How To Bind "OnDataBound" Event Of "DropDownList" In Declarative Syntax To A Static Method In Some Other Class
Jun 16, 2010
How to bind "OnDataBound" event of "DropDownList" in declarative syntax to a static method in some other class ?e.g<asp:DropDownList runat="server" id="d1" OnDataBound="SomeOtherClassThanThisPage.StaticMethod"></asp:DropDownList>
This will give the error, "Page does not contain a definition for SomeOtherClassThanThisPage. it like this or it be done in the Code Behind only ?
View 2 Replies
Similar Messages:
Dec 9, 2010
I have a gridview with 3 nested dropdownlists in one cell on edit like this:To get the exact fields when the user clicks on edit I used the following code(yes it's messy)
[Code]....
The BLLOnderhoud is a class and the getReserveInfo is used to get the Model - Brand(merk) Information.Since the dropdownlists are nested in the gridview I can't call them directly and they can't call any of my functions.And this is the problem, when I change the dropdownfield Model the Auto field wich is the last dropdown(in the picture is a typo) should be binded like in the following code:
[Code]....
But the dropdownlist onDataBound event can't call any of my functions that are in my class.So my question is how can the onDataBound event of the second dropbox trigger a function? The only thing that the function has to do is to bind the 3rd dropdownlist
View 4 Replies
Mar 26, 2011
I have a private static field in my Controller class in an MVC web application.
I have a static method in that controller that assigns some value to that static field, I want to apply lock on that static field until some other instance method in the controller uses the value stored in the static field and then releases it.
DETAILS:
I have a controller named BaseController having a static ClientId field as follows and two methods as follows:-
public static string ClientId = "";
static void OnClientConnected(string clientId, ref Dictionary<string, object> list)
{
list.Add("a", "b");
// I want the ClientId to be locked here, so that it can not be accessed by other requests coming to the server and wait for ClientId to be released:-
BaseController.clientId = clientId;
}
public ActionResult Handler()
{
if (something)
{
// use the static ClientId here
}
// Release the ClientId here, so it can now be used by other web requests coming to the server.
return View();
}
View 1 Replies
Sep 6, 2010
I have a bunch of controls like the following in the EditItemTemplate of a ListView, with LINQDataSource:
[Code]....
I'm curious to know why the database won't update on the click of the Update button:
[Code]....
According to all I've read, the above code should be sufficient. Since CommandName is set to Update, it would seem that no code-behind is necessary.
View 20 Replies
Mar 9, 2010
What is the format for databinding to a complex "object"? I have a linq to sql class that has containment, i.e object.containedobject.I want to reference the sub objects fields declarative.So I've tried my MySubField.MyBasicProperty and that did not work, as well as, MySubField_MyBasicProperty.
View 2 Replies
Jul 16, 2010
I know that in ASP.NET (talking about 2.0 here primarily) one can set a property on an object that takes a collection of things (an enumerable type I'm guessing is the trigger) and then reference it declaritivly. For example:
<ObjectDataSource properties="blahblahblah">
<SelectParameters>
<asp:Parameter />
</SelectParameters>
</ObjectDataSource>
It is the <asp:Parameter /> part which is the root of my question. Say I wanted a simpler collection on a type. Say a List<String> or if generics are out, an IntegerCollection or StringCollection. How would I use that declaratively? Is <string value=''> allowed, or can I put raw values into it like <StringCollection>string, string, string</StringCollection> or what?
EDIT:
I feel like I was not clear enough in my question. I understand that ObjectDataSource implements its SelectParameters property as a ParametersCollection, and that one can use that property declaratively (in an ASPX page) to set up Parameter types within that collection. What I'm wondering is if I made something like StringCollection as a property on another control, is there a syntax (in ASPX) for adding strings to that collection? Or would I have to define a wrapping class like how DropDownList takes ListItems to fill its collection?
View 2 Replies
Nov 17, 2010
I have some confusion with singleton class, below are my some points:
1.Can singleton class have static method?,if yes then how we call that methods?
2.what is main difference between Static class and Singleton Class?
I have created my singleton class as follows:
[Code]....
In Above class structure I have created two method one is Static and second is non static, When I am trying to access Static Method it gives me compile time error.
How can I use static method of singleton class?
View 7 Replies
Feb 22, 2011
I hate to see the name of the class used as a string parameter like "FileDownloader" in the code, and I would like to use something like this FileDownloader.Name(), where FileDownloader is name of the class.
Only problem is that I can't find out how to do that without instantiating object or creating a static method...
Is there a way to get a class name in .net without having the object instance and without creating a static method that returns the name of the class?
View 3 Replies
Apr 27, 2016
I have a class and call class A method by creating class A object
unlike this call Class B method by using class B objectÂ
Code is here below
class A {
public void A1() {
Console.WriteLine("I am from Class A");
}
}
class B {
public void B1() {
Console.WriteLine("I am from Class B");
[Code] .....
View 1 Replies
Mar 25, 2011
Which one is faster? For a dropdownlist binding it the first time and using ViewSate or Turning of viewstate, keeping the data in a static datatable and binding the dropdownlist each time on a postback
View 7 Replies
Oct 28, 2010
I have a hierarchy in my website project as below:
[CustomControl1 - folder]
- CustomControl1.ascx
- CustomControl1.css
- CustomControl1.js
I load css and js files dynamicaly based on which controls are used on particular page. I am doing it by using following code:
[code]....
where AddLinks method adds HtmlLink controls to Page.Header with href attribute set to coresponding css and/or js file.
I would like to add Interface that would force new controls to have AddLinks method but it is impossible since it is a static method. Because my custom controls inherit from Control class I cannot use abstract class and/or virtual methods either. How can I achieve my goal?
View 1 Replies
Sep 4, 2012
i have 2 dropdown list and i need to create a Generic method so that I an reuse it...
View 1 Replies
Feb 24, 2011
I have developed a web application which contains 50 pages & now i want to call a method on each page_load.So,Is there any way i can attach my method to existing class Event. So whenever that event gets raised my method will be called.
example : Can i attach mymethd() to page_load event of page class so whenever any page will load my mymethod() will be called. I dont want to inherit the page class.
View 3 Replies
Jun 30, 2010
I did some research after posting. All I found was simple examples for no-layer architectures, like connecting to a database from your aspx page, so, in a corporate environment, it is unnaceptable.
I need to call a server-side method (using ASP.NET Ajax) in a 3-layer architecture.
For example, my Default.aspx contains a method LoadProducts().
[Code]....
[Code]....
This cannot change. There is no way to convert Business and Data layers to static.
How can I call the LoadProducts() method using ASP.NET Ajax?
View 2 Replies
Aug 31, 2012
how to bind dropdownlist in gridview in row databound event in asp.net?
View 1 Replies
Jun 22, 2010
I am building a web site with visual web developer 2010
I have a class (autoButton) that adds a button to a panel (on Default.aspx) and a handler w/i the same class (classifyEventHandler)
The button appears fine, but when clicked the even doesnt fire, what am I doing wrong?
I tried locating the event handler in default.aspx, but it was not found :P
Imports Microsoft.VisualBasic
Public Class autoButton
Public Sub makeClassifyButton(ByVal theCell As Object)
Dim myButton As New Button
myButton.Text = "classify"
myButton.ID = "b_classify_" + theCell.ID
AddHandler myButton.Click, AddressOf classifyEventHandler
theCell.Controls.Add(myButton)
End Sub
Private Sub classifyEventHandler(ByVal sender As Object, ByVal e As EventArgs)
MsgBox("done?!")
End Sub
End Class
View 1 Replies
Jan 27, 2011
I have a question about C Sharp ASP.NET:Is there a difference (in code speed, resources) between:public static variable declared in public static class MyGlobals in a 'Code File' template;and the variable declared in a normal 'Class File' template;I use this variable in 2 different Class Files and also in _Default Page codebehind cs file.In fact in my case I need about 20 global variables of type List<string>.
View 9 Replies
Apr 27, 2010
In vsw2005/ASP.Net 2 i have a formview used for project management; i recently added a new set of dates and a dropdownlist for the contact name. It is essentially a duplicate of another set of dates and contact. Both dropdownlists use the same sqldatasource, but the new one is throwing an error when the form changes to edit mode:
"'ddlInstall2Engineer' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value"
The error occurs even though I have a static listitem with appenddatabounditems set to true. Here is the markup for both ddl and sqldatasource (as you can see, other than id and name of field being bound to, they are identical):
<asp:DropDownList ID="ddlInstallEngineer" runat="server" AppendDataBoundItems="true"
DataSourceID="sdsInstallEngineer" DataTextField="Name" DataValueField="ID"
SelectedValue='<%# Bind("InstallEngineer_ID") %>' Width="150px">
<asp:ListItem Text="TBD" Value="0"></asp:ListItem>
[Code]....
View 2 Replies
Jul 7, 2010
i want to bind jqgrid with static data in asp.net without using webservice.
View 2 Replies
Oct 18, 2010
I have an ObjectDataSource that I want to perform updates using a business entity i.e. Type="Object"). Since the values for the entity are within a user control, I have stored a reference to the control in Session and in the updating event, set the new instance to the value of the entity from the user contol property (which also pulls values from the form viaother properties of the control):
Protected Sub MasterDataSource_Updating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.ObjectDataSourceMethodEventArgs) Handles MasterDataSource.Updating
Dim entity As New Login()
Dim accountControl As AccountInfo = TryCast(Session("AccountCtrl"), AccountInfo)
entity = accountControl.Entity
e.InputParameters.Add("entity", entity)
End Sub
And here's the markup for the datasource:
<asp:ObjectDataSource ID="MasterDataSource" runat="server" EnableCaching="true" CacheDuration="10"
SelectMethod="SelectAll" UpdateMethod="Update" TypeName="Data.DAL.LoginDAL">
</asp:ObjectDataSource>
My question is, how can I get the update method to pass this entity to the update method in my BLL class? It seems the Update method requires an ID or reference to the original object to use in determining whether any changes have taken place, but I don't really want to do this. In other words, I just want to use the Update event on my ObjectDataSource to pass my entity to the method ("Update") I set as a property and then let this business method handle the update of the data. Shown below, is the BLL update method I want to call:
Public Overloads Function Update(ByVal entity As Login)
If entity Is Nothing Then
Throw New ArgumentNullException("entity")
End If
MyBase.Update("UpdateLogin", entity.Username, entity.Password, entity.FirstName, entity.LastName, entity.Role, entity.Region, _
entity.Email, entity.Title, entity.TierID, entity.Street, entity.City, entity.State, entity.Zip, entity.Mobile, entity.Phone, entity.Fax)
End Function
When I try to call this as it stands now, I get an error: ObjectDataSource 'MasterDataSource' could not find a non-generic method 'Update' that has parameters: ID, entity. Previously, I'd set up a long list of parameters of basic data types (string, int, boolean), but this is rather cumbersome and I was hoping to use an entity for this (FYI, I also got the same type of error when I tried this approach, but with the ID as the
last parameter in the list). Perhaps what I'm doing here is atypical to how the ODS is normally used?? Has anyone done something like this successfully?
View 1 Replies
Mar 4, 2011
$.ajax({
type: "POST",
url: "jquerychat.aspx/SendMessage",
data: "{msg:'Hello',userId:1}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
// Replace the div's content with the page method's return.
// $("#txtMessages").val(msg.d);msg:'Hello',
},
error: function(){
alert('failure');
}
});
});
[WebMethod]
public static string SendMessage(string msg,int userId )
{
NameValueCollection nvc = HttpContext.Current.Request.Form;...................
View 1 Replies
Jan 8, 2010
If a static class is put in App_Code, does that imply only one instance will be created, shared by different http requests?Or each request still brings one request?
View 3 Replies
Jan 23, 2011
I have created a Slider User Control which implements ISlider Interface.I have some methods like SetValue below which should accept both ISlider types and standard Slider control type.Am I'm obliged to use this heavy syntax is there any shortcut?
public void SetValue(Object slider, Double value)
ISlider ISlider;
ISlider = slider as ISlider;
if (ISlider != null)
ISlider.Value = value;
((Slider)slider).Value = value;
View 1 Replies
May 12, 2010
I have the following page
[Code]....
Currently, only GenericOfflineCommentary's ExtractPageData() is firing. How can I modify this to first run OfflineFactsheetBase's ExtractPageData() and then GenericOfflineCommentary's?
edit: I'm trying to avoid having to call base.ExtractPageData() in every implementor.
View 2 Replies
Feb 5, 2010
I have the following static function in c#
public static string Greet(string name)
{
string greeting = "welcome ";
// is it possible to pass this value to a label outside this static method?
string concat = string.Concat(greeting, name);
//error
Label1.text = concat;
//I want to return only the name
return name;
}
As you can see in the comments, I want to retain only the name as the return value, however I want to be able to take out the value of the concat variable to asign it to a label, but when i try the compiler refuses, can it be done? Is there a work around?
View 4 Replies
