I created a control where other developers can create an instance and use. There is a button click in the control. How do I allow developers to plug in their own code in a certain part of my control? I am not sure if or how exactly to use a delegate or event in this scenario.
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How to I update MyControl to allow this?
I tried to add a custom property to the data model:
public partial class Department
{
public string ExtensionIdName
{
get
{
return Extension.ExtensionName;
}
set
{
}
}
}
It seems that it works, but when I bind the data to a ListView it shows all the properties except the property I added manualy (ExtensionIdName).
I am getting this build error on the following line of code, and do not find anyhting wrong there.
public partial class _Default : System.Web.UI.Page
{
}
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I am getting the same error (as this post: http://forums.asp.net/p/1346731/4020966.aspx) as expected class,delegate,enum,interface or struct and also type or namespace definition or end of file expected.Below is the code:
public
partial
class
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<asp: GridView..... ID="MyGrid" AllowSorting = "True" OnSorting = "SortMyGrid">
protected void SortMyGrid(object sender, GridViewPageEventArgs e)
DataTable TheGridData = MyGrid.DataSource as DataTable;
And then when I run the codeNo overload for 'SortMyGrid' matches delegat
I have created a custom composite control basically with two checkboxes. I have created a subscribable event, and the consumer has subscribes to it. But when I go to excute it, the delegate reference is null. What am I missing and why is it losing its subscribed events?
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I am using VS2008 SP1 targeting .Net 2/3.5SP1 web site.
I have a control that handles commenting. In this control, I have set a delegate event handler for sending an email.
I then have various types of controls, e.g. blog, articles etc, each of which may or may not have the commenting control added (which is done dynamically with me not knowing the id's), i.e. the commenting control is added outside this control. Each of these controls handles it's emailing differently(hence the event).
What I'm trying to determine, is how to assign the event in the parent control. At the moment, I'm having to recursively search through all the controls on the page until I find the comment control, and set it that way. Example below explains:
COMMENTING CONTROL
public delegate void Commenting_OnSendEmail();
public partial class Commenting : UserControl
{
public Commenting_OnSendEmail OnComment_SendEmail();
private void Page_Load(object sender, EventArgs e)
{
if(OnComment_SendEmail != null)
{
OnComment_SendEmail();
}
}
}
PARENT CONTROL
public partial class Blog : UserControl
{
private void Page_Load(object sender, EventArgs e)
{
Commenting comControl = (Commenting)this.FindControl<Commenting>(this);
if(comControl != null)
{
comCtrol.OnComment_SendEmail += new Commenting_OnSendMail(Blog_Comment_OnSendEmail);
}
}
}
EDIT:
The reason I ask is that if I search from this.Page as the initial control, I am worried about time taken to search down the control tree to find it. Each different type of page would be different in how many control it would have. On some testing, it returns back quite quickly the result.
Is it possible to use InvokeMember() of Type class to call a property of a property of a class?
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Can we write property in property?IN the page load event we have page property and we can find another page property in that page property.Pls let me know how this is happening
View 5 Replieshow to getValue of property class with this method?
public static int SQLInsert<TEntity>(TEntity obj) where TEntity : class
{
foreach (var item in obj.GetType().GetProperties())
{
//item.GetValue(?,null);
}
return 1;
}
I have a webpage that uses a Treeview. In the treeview are nodes and i use the Text and Value property, but i need one more. I need one boolean property called IsFile.
I make the Nodes and add them to the tree programmatically. I have a class Called NavTreeNodes that inherits the TreeNode class and ads this bool.
public class NavTreeNode : TreeNode
{
private bool _IsFile;
public bool IsFile
{
get { return _IsFile; }
set { _IsFile = value; }
}
public NavTreeNode()
{ }
}
And when i make a new TreeNode i use this class. Everything works until i try to get the data from the treeview in the SelectedNodeChanged on the TreeView function.
protected void treeview_Navigation_SelectedNodeChanged(object sender, EventArgs e)
{
TreeNode node = treeview_Navigation.SelectedNode;
NavTreeNode NNode = node as NavTreeNode;
Response.Write(NNode.IsFile.ToString());
}
I get a "Object reference not set to an instance of an object." error when i try this. I cant even get the Value or the Text value using this method.
I am applying css style to "body" and to a div which id is "overlay" like:
body
{
margin:0;
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"overLay" div is inside noscript tag which renders in the browser only when javascript is disabled in the browser.My requirement is that I have to set "overflow:hidden" in the body when "overLay" div get rendered.
I have a class, let's say class Sample. Sample has unknown properties but inherits an interface ISample. Said interface includes one method which I'm trying to create. This interface has a method called getPropertyValue(object o, string PropertyName).
It returns the value of the o.PropertyName using generics (unless you have a better suggestion). How do I write it? In other words, I want to be able to pass the name (as a string) of a property and return its value. Samples in C# preferrable but VB ok and any comments or suggestions are welcome.
I have a class called Questions. This Questions has properties QuestionID and QuestionAnswer. My list of Questions has QuestionID like 2,3,4,15,12,24,22,,,, etc I need to sort this List of Questions Object based on QuestionID and store in another Questions object.
View 2 RepliesActaully i am careted one webservice name:service1,created one more class name: service2 this poperty class for webservice,My question is
1.How to access that property class in client side?
2.It's possible to create Layer archt. Inside the webservice?
If i want to use Property & Method in same class then how to use it. I want to keep separate class only for interface , not for property.
Also we have tried with [OperationContract] before get ,set in Service class . it solved our issue but throws error while run a .svc file
I have question about HttpContext class (http://msdn.microsoft.com/en-us/library/system.web.httpcontext.aspx). This class has Responseproperty (http://msdn.microsoft.com/en-us/library/system.web.httpcontext.response.aspx). But I don't understand, why Response property hasHttpResponse return value, not HttpContext (this is HttpContext, not HttpResponse property).So, why there is:
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not
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I programatically add meta tags to the head of each page using htmlhead, specifying the name and content. I now need to add new meta tags with property and content.
View 1 RepliesI am using the Entity Framework for the first time and want to know if the following is possible - I have generated my classes from the DB, and have one called Category.
Obviously it has all my fields in the table (ID, CategoryName, SortOrder etc..) but I want to know if I can add a custom property which is not in the table, but is actually the result of a custom method.
I want to add a new property called 'CategoryURL' which is basically the 'CategoryName' property run through a custom method and returns a hyphenated string.
My initial thought is inheriting from the generated Category class and creating something like this inside?
public string CategoryURL
{
get{ return MyCustomMethod(this.CategoryName) }
}
Is this the correct approach? And will 'this.CategoryName' work as I think it should? Basically the end result is when I return a list of 'Category' I want this to be part of the class so I can use it in my foreach loop.
What am I doing wrong here?
Me("Label" & CStr(i)).Text = strURI.Substring(strURI.ToString().LastIndexOf("/") + 1) & ": " & intCount.ToString()
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I get an error on Me; it indicates that it cannot be indexed because it has no default property
I have a vb class that reads a single row of data from an SQL view. I want to add a property to it that will expose the value of a new bit field. But whatever I do my class always returns the value "false".What am I doing wrong?
Public ReadOnly Property IsPublished() As Boolean
Get
Return valPublished
End Get
End Property
Here's the relevant line from my datareader: Me.valPublished = Convert.ToBoolean(theObjectReader("Authorised"))Authorised is my bit field. I have tried it with and without the "ConvertToBoolean" statement.When I response write the value of the property for rows where this field is true, it always shows false.
Why doesn´t this property return a datetime formated with the following pattern when using the property in the codebehind page in my ASP.NET Webforms website? When debugging i can see that the value the returning datetime is "2011-02-21 16:13:29.670" wich is correct.
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And after assigning the returned property value to a hiddenfield in the .aspx page i get this value assign to the hiddenfield.value "2011-02-21 16:13:29"
hdnUserLastUpdated.Value = objUser.UserLastUpdated
I have a custom class downloaded from internet. In this class, there is a properties where by the value can be either 0, 1 or 2 only and I MUST assign it during run-time. But some how, this assignment only work using VB, and not C#.
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In C#, it the compiler said "missing cast or conversion...". But in VB, it works perfectly.
I'm having difficulties with adding sub-properties into Property sheet.
for example:
let's say I've created a web-control with a textbox in it. I can add to my web-control a new property such as:
public TextBox MyTextBox
{
get
{
return m_TextBox;
}
set
{
m_TextBox = value;
}
}
and this will be enough for me to add the TextBox into the property sheet of the web control each time i use this web-control.
My problem is with adding the TextBox properties into the property sheet with the sign "+" next to the "MyTextBox" property.
I'm using VS2008 if it's make the difference.
I have a webpart which contains a dropdownlist in the Webpaart property and its working fine. The code is below.
public enum ItemCount
{
One = 1,
Five = 5,
Ten = 10
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