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.
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
Can anyone clarify to me the difference between the following:
1.
{
// ...
Button b = new Button();
b.Click += new RoutedEventHandler(b_Click);
}
void b_Click(object sender, RoutedEventArgs e) { //do stuff...... }
2.
{
// ...
Button b = new Button();
b.Click += a_Click;
}
void a_Click(object sender, RoutedEventArgs e) { //do stuff...... }
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?
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 ?
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.
I have a WindowsForm that has a DataGridView that shows output of my app. The class with the button is DriveRecursion_Results.cs. I want it so that once the button is pushed by the user, my method FileCleanUp() in my SanitizeFileNames class is called. I'm not quite sure how to do this though.Here is the code for both classes:
public partial class DriveRecursion_Results : Form
public DriveRecursion_Results()
InitializeComponent();
private void listView1_SelectedIndexChanged(object sender, EventArgs e)
[code]...
My web services have base web service method called IsGood()I want to make sure every methods in my web service call IsGood() in base web service automatically without add code in each web service method, can I do that?
View 2 RepliesHow to simplify this, 2 method in class are identical. First class.
Public Class Gui
Inherits System.Web.UI.Page
Public Sub CreateStyleLink(ByVal StyleArray() As String)
Dim StrStyleLink As String
[Code]....
I have a class file called ShoppingCartClass.cs. Inside ShoppingCartClass I have a method called CanadaPostShipping.
CanadaPostShipping get passed a lot of variables and then builds an xml, sends it to CanadaPost url and gets back an xml file with the shipping rates.
I would like to pass the xml back to my webpage so in my web page I can check that it has status ok and then extract the information I need.
My testing calling routine looks like this:
[Code]....
The start of my CanadaPostShipping routine looks like this
[Code]....
This is my current ending spot in CanadaPostShipping....where I am getting back the correct xml from CanadaPost
[Code]....
As you can see I am saving it to my thumbdrive.....
What changes would I have to make to my calling routine and the method in the class to return xml "mydoc"?
For instance if I'm inside the Page_Load method and I want to get query string data I just do this:
public partial class Product_Detail : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
[code].....
I've moved a class in my project into a class Library in the same solution. I've added a reference in the web project to the class library.
How do I access the methods in the class library?
I am learning Asp.net web application. I have one doubt.
Is it possible to pass the DataTable from one Method to another in the same class?
I'm developing a website with ASP.NET MVC, NHibernate and Fluent NHibernate and want to know how can I customize my Map to get records using a custom Method.
My entities:
public class ImageGallery {
public virtual int Id { get; set; }
public virtual string Titulo { get; set; }
public virtual IList<Image> Images { get; set; }
ublic virtual bool IsActive { get; set; }
}
public class Image {
public virtual int Id { get; set; }
public virtual ImageGallery ImageGallery { get; set; }
public virtual string Low { get; set; }
public virtual bool IsActive { get; set; }
}
My Fluent NHibernate Maps:
public class ImageGalleryMap:ClassMap<ImageGallery> {
public ImageGalleryMap() {
Id(x => x.Id);
Map(x => x.Titulo);
HasMany(x => x.Images)
.KeyColumn("ImageGalleryID");
Map(x => x.IsActive);
}
}
public class ImageMap:ClassMap<Image> {
public ImageMap() {
Id(x => x.Id);
References(x => x.ImageGallery);
Map(x => x.Low);
Map(x => x.IsActive);
}
}
And, a method on my ImageRepository class:
public IList<Image> ListActive() {
return this.Session.CreateCriteria<Image>()
.Add(Restrictions.Eq("IsActive", true))
.List<Image>();
}
If I create an object this way:
ImageGallery ig = new ImageGallery();
I can access my the Image's list using:
foreach(Image img in ig.Images) {
...
}
However, ig.Images give me access to all images records and I would like to access just active records (or another criteria), using ListActive()'s repository methods.
I saw this implemented somewhere but basically below I'm using the textbox HTMLHelper to draw a textbox with the id myID and default text 'text_goes_here'. I want to also add a class to thiis helper, i saw somewhere it implemented with new {@class =''} as a third parameter creating an object but im not sure exactly how its wrote
<%= Html.TextBox("myID", "text_goes_here") %>
I'd like to be able to determine what class will be called given an URL. For instance, I have a page /First.aspx that has a hyperlink to /Second.aspx In the code behind for First.aspx.cs, I'd like to be able to determine what class will execute if someone clicks on the hyperlink that points to /Second.aspx.
EDIT: One of the reponders asked me to outline the problem I'm trying to address. Here it is: The codebase I inherited has a subclass the System.Web.UI.Page that has a public Authorized method that returns a boolean. The Authorized method checks the parameters passed via the query string against the authenticated user, and determines whether that user should be allowed to call that page with the given parameters.
Elsewhere in the site I have hyperlinks that reference those protected pages. In some instances those links are displayed to users who are not authorized to navigate to that page. They can click the link, however they get an error. In other instances, prior developers when through the trouble of inserting logic that hides the hyperlink for those unauthorized users, but the authorization logic is duplicated (In the page itself, and in the linking page). What I would like to do is create a subclass of the hyperlink class, and have the subclass inspect the NavigateUrl, determine the destination page class, and call the Authorized method of that class to determine if the user is authorized to call that page. If the user is not authorize, the link will automatically hide itself.
One small doubt in the way it works for C#Where does local variables of a method inside a class get stored?Heap? - If yes, then why do we have to explicitly initiate them?Stack?- Then how does the allocation of them takes place once we make a object of the same class using new - would it make the member variables of class to be allocated on heap and local variables of member functions (of the same class) on stack.
View 4 RepliesI have created an extended method for DataTable. I want to generate a class automatically in my solution when i call that method while writing a code as Visual studio does when it doesnt find the method.e.g mytable.mymethod(); Generate a class
View 2 Repliesi wrote a webmethod on webservice. it will do adding product to shoppingbasket. But it doesn't work. i used a class and its method in this webservice method. error is about it. my code are below:
[Code]....
[Code]....
I am having a class file in which i want to redirect the page from one application to another application or how to use the response.redirect method in a class file
View 4 RepliesDo i remove the ability to call a method from the class my page is inherited from?
I am trying to build my custom Role Provider and certain method i not want to be accessible.
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?
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?
I'm new to MVC and I have a question and I need your inputs.I have this portion of code inside a method (let me just call this MyMethod):
[Code]....
where I am simply using the default CreateUser method from default Membership class to create a new user. This method simply adds the user on the default membership table. Now I have another table which I call userDetails table and I am hoping to add additional information related to the user recently added on the membership table.I can simply add more codes inside MyMethod to do the above logic of adding the additional information to another table. However I was thinking that if I do this... and I delete the user using the ASP.Net Web Application Administration Tool, I may end up with orphan entry on my userDetails table after the user is deleted from the membership table (since the administration tool wouldn't know MyMethod and use the default method from Membership class).So is there a way I can override the CreateUser method from the System.Web.Security.Membership class such that it goes through this flow?
1. invoke the original or base CreateUser method (the user is now created during this step)
2. determine user_id of the newly-added user on membership table.
3. add more user-related information on another table example: userDetails table.
This way, every time I call the CreateUser method it automatically adds the necessary entries on the membership and userDetails tables.If I create my own membership class inheriting from the original class, it would mean a lot work rewriting lots of methods when in reality what I'm trying to achieve is only adding additional information related to the user. I tried modifying the default membership table from the provider database but I get and error during the user-creation process. This gives me the impression that I am not allowed to modify the existing tables... which would lead me to creating a custom provider.
i have private void enableFormValues(Control parent) in my aspx page
i added the above code in a classfile as public void enableFormValues(Control parent)
but when i am trying to call it in .aspx file i ama not getting enableFormValues