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yrishi wrote: how to read xml data from IIS port
I am not sure what do you mean by this?
yrishi wrote: how to display it in .aspx page
Write a Xsl and bind your Xml data to this xsl.
Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.
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ok, I have asp.net web application on my server side. There is one device at my client side, that device send me data using my ip address and one port no(iis port). i want to show that data in my default.aspx page how can do this??
please help me
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if the xml is simple,you can use DataSet to load this xml file, the method is ReadXml.good luck
i am a new
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You can use XmlTextReader object to read and parse XML files and display accordingly.
Either you love IT or leave IT...
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You can use socket connection in asp.net. So write a server application which listens a port in webserver.
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Ok, I've Googled myself silly, and have done some very interesting reading but I still cannot find my answer...
If you call AppDomain.CurrentDomain.GetData() from a static method, does it access the domain of the application calling the static method, or a shared static domain?
 
____________________________________________________________
Be brave little warrior, be VERY brave
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I'm fairly sure there is no such thing as a shared static app domain, my assumption would be that it would get the app domain currently running the code.
If you need to know for absolutely certain, the best thing to do is probably test it.
Simon
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As Simon has said, there is no 'shared static domain'. You will get the object from the domain running the code.
You didn't ask this, but it may be helpful: the scope of static fields is the AppDomain. So if you use a class with a static field, you will get one object per domain.
Nick
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Be excellent to each other 
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Thanks for the reply, I think I either misunderstand static or AppDomain. Is the AppDomain shared across multiple instances of the same application? (Assuming that they are running on the same machine)
____________________________________________________________
Be brave little warrior, be VERY brave
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Adriaan Davel wrote: Is the AppDomain shared across multiple instances of the same application?
No, AppDomain is an isolation container within a process. So just as each process is separated on your machine, so each AppDomain is separated within each process.
Nick
----------------------------------
Be excellent to each other
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Thanks Nick, thats what I understood. The reason why I asked the question is that static is not isolated within an application and the AppDomain is, so how does it find the correct AppDomain? Or is the how not important?
____________________________________________________________
Be brave little warrior, be VERY brave
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Ok, my confusion was not with AppDomain but with static... I also see that static in C# is quite different to static in c++ and I think my confusion came in from my c++ background, I studied it 8 years ago but have been doing c# mostly...
Does static differ in definition in Visual Studio c++ to Borland c++ of 8 years ago?
Also I once had a web application (ASP.Net) where the static variable was shared between users (and caused major confusion), does that mean static is shared between multiple instances of a web application, but not a windows application?
____________________________________________________________
Be brave little warrior, be VERY brave
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Adriaan Davel wrote: static in C# is quite different to static in c++
Yes
Adriaan Davel wrote: does that mean static is shared between multiple instances of a web application, but not a windows application?
ASP.NET is still a .NET framework, so static works the same way. However in ASP.NET you can have many threads in an AppDomain that are each serving a request, so they will all see the same static instance.
I found this[^] on Google books. Might help - starts on p.571
Nick
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Be excellent to each other
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give me some ideas abt HTML,,,,,i need a code for design a simple page,,tht must have a login form and hyperlink for next page also,,,send the code r any course material as sson as possible frnds....bye ..
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That's not the way this site works - you should search around Code Project for beginners articles on website design. Hover over the Articles link (between Home and Message Boards in the menu) and select Beginners Articles[^].
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
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SqlConnection con = new SqlConnection("Data Source=.\\sqlexpress;Initial Catalog=MLM;Integrated Security=True");
con.Open();
SqlCommand com = new SqlCommand("select Pin_Password from RegistrationForm where Pin_Password = '" + TextBox3.Text + "'", con);
SqlDataReader rs = com.ExecuteReader();
DataSet ds = new DataSet();
while (rs.Read())
{
if (rs["Pin_Password"].ToString().Trim().Equals(TextBox3.Text.Trim()))
{
DateTime dtStart;
DateTime.TryParse(TextBox1.Text, out dtStart);
DateTime dtEnd;
DateTime.TryParse(TextBox1.Text, out dtEnd);
SqlDataAdapter adp = new SqlDataAdapter("select RequestedDate,RequestedPins,ApprovedPins,Action from AdminPins where RequestedDate between '" + dtStart + "' and '" + dtEnd + "'", con);
adp.Fill(ds);//It is giving error at this place
ds.Clear();
GridView1.DataSource = ds.Tables[0];
GridView1.DataBind(); 
}
else
{
Response.Write("Enter Correct Password");
}
}
rs.Close();
com.ExecuteNonQuery();
con.Close();
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You are getting an error here because you have an active operation being performed on this connection, i.e. you are already performing a DataReader operation when you attempt to perform the fill. Your Fill operation needs to operate on a different connection, or you need to enable MARS (Multiple Active Result Sets) on your connection.
BTW - your application should be rewritten to cope with SQL Injection Attacks. You have a very vulnerable design here.
"WPF has many lovers. It's a veritable porn star!" - Josh Smith As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.
My blog | My articles | MoXAML PowerToys | Onyx
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I have a config file in xml format which specifies where in the Windows registry to look for the location of my appliation. For example, the xml would specify "HKEY_LOCAL_MACHINE\SOFTWARE\MyTestApp\InstallDir".
If haven't yet created the MyTestApp key in the registry and the below line of code is executed, I get "Object reference not set to an instance of an object" exception.
String filePath =(string) Registry.GetValue("HKEY_LOCAL_MACHINE\SOFTWARE\MyTestApp", "InstallDir", "");
I know I could test for the existence of the RegistryKey first(see below code) but I don't want to hardcode this to the LocalMachine hive. Is there a way to get to the registry hive by name?
RegistryKey rk = Registry.LocalMachine.OpenSubKey("SOFTWARE\\MyTestApp");
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You're getting the exception because Registry.GetValue returns null if the key doesn't exist, and you are casting this null to a string. Instead you should check for null first.
Object keyValue = Registry.GetValue("HKEY_LOCAL_MACHINE\SOFTWARE\MyTestApp", "InstallDir", "");
String filePath;
if(keyValue != null)
{
filePath =(string)keyValue;
}
else
{
}
(By the way, the registry is best avoided now for most stuff. You should consider looking at .net settings or isolated storage instead unless you have to support the registry for backwards compatibility or something like that)
Simon
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Simon Stevens wrote: // Now you know you have a value, so you can cast it to a string.
Not necessarily. You may have a non-null string object but still not have a value, i.e. an empty string. A better approach may be to use String.IsNullOrEmpty
only two letters away from being an asset
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I see your point, and normally I would recommend using .isNullOrEmpty, but in this case the data retrived from the registry is an Object. The check for null is to find out if a non-null value was returned from the registry. If the object is non-null (including empty string) (and assuming that you created the key, so you know that the registry data type is a String type), then you can cast it to a String. Then, you can do String.IsNullOrEmpty to see if the registry value is an empty string if you want, but the point is that the registry key existed, and you have data, even if it's an empty string.
(I suppose, depending how critical the app is, you might want to do a non-failing cast instead just incase someone has changed the registry data type, but this is going a bit beyond the scope of the OP now)
Simon
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Thank you everyone. Checking for null solves my problem.
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Hi fellows,
I´m using the class "BaseEntityWithState" as the base class for lot of aur bussines classes.
Basically it has lots of methods to trak object state (stripped off so only relevanto ones to the problem are shown).
When a child class has one of its porperties modified it changes the state to "modified".
I need to clone the entity and I´m doing that serializing and deserializing the instance.
Supouse I need to clone a child entity wich currentStatus is "unchanges". During the deserialization part of the cloning method, the members of the base class are assigned it´s values properly. Then whe the "Value" property of the child class is set, it changes the currentStatus property of the base class. So the original instance has currentStatus "unchanged" and the cloned one has "modified".
What I need is to be able to avoid that.
I tried setting the Order property of XMLElement atributte to change the serialization order, but the serializer complains that I should specify order for all member of the base an child class. This would be to hard to mantain. Remember there are lots of child classes, each one with several members.
So, the only solution that is working is declaring in the child class, after all other declarations a "currentStatus2" property (commented in the code).
That way this is the last property to get serialized and also the las to get deserialized, propperly setting the currentStatus atributte to the original value.
For this solution to work requires me to add the ficticious property to EVERY child class. Not too much work, but I´m worried that this is not a good solution, cause it requiere other programmers (less techies than me) not to forget to add that property.
I´d like to provide a better solution to this problem.
Thanks in advance
Sebastián Streiger
Imports System.IO
Imports System.Xml
Imports System.Xml.Serialization
Imports System.Reflection
Public Enum estados
unchanged
modified
End Enum
Public Class BaseEntityWithState
Private Shared Function getXmlTypeMapping(ByVal tipo As System.Type) As XmlTypeMapping
Return (New XmlReflectionImporter).ImportTypeMapping(tipo)
End Function
Public Function serialize() As String
Dim writer As New StringWriter
With New XmlSerializer(Me.GetType())
.Serialize(writer, Me)
End With
Return writer.ToString
End Function
Private Shared Function getXmlSerializer(ByVal tipo As System.Type) As XmlSerializer
Return New XmlSerializer(getXmlTypeMapping(tipo))
End Function
Public Function DesSerializar(ByVal tipo As System.Type, ByVal xml As String) As Object
Return New XmlSerializer(tipo).Deserialize(New StringReader(xml))
End Function
Public Function clone() As BaseEntityWithState
Dim aux As BaseEntityWithState = Me.DesSerializar(Me.GetType(), Me.serialize)
Return aux
End Function
Private status As estados = estados.unchanged
Public Property currentStatus() As estados
Get
Return Me.status
End Get
Set(ByVal value As estados)
Me.status = value
End Set
End Property
End Class
Public Class childEntityWithState
Inherits BaseEntityWithState
Private _value As Integer
Public Property value() As Integer
Get
Return Me._value
End Get
Set(ByVal value As Integer)
Me._value = value
Me.currentStatus = estados.modified
End Set
End Property
'Public Property currentStatus2() As estados
' Get
' Return MyBase.currentStatus
' End Get
' Set(ByVal value As estados)
' MyBase.currentStatus = value
' End Set
'End Property
End Class
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What I'm about to propose is not good design, but it may be a simple solution: use a private boolean to inhibit changing the status property while deserializing.
2+2=5 for very large amounts of 2
(always loved that one hehe!)
modified on Wednesday, June 3, 2009 8:22 AM
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Moreno:
How could I realize during property assigment if it´s being done by serialization or by a line of programmer code.
I don´t think it´s good design also, but I don´t know if it´s possible.
Keep in mind that this class can be serialized within other classes serializacion, so I can´t make something like:
original.TrackStatus = false
cloned = original.clone
original.TrackStatus = true
cloned.TrackStatus = true
Anyway, thank you very much
Sebastián Streiger
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