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Is this a WPF app? WPF uses URIs everywhere.
But anyways, somewhere you are specifying a URI in the wrong format. Or the control is. Did you try turn on all first chance exceptions? That might help you catch it when its really happening.
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Thanks for the reply. It turns out it was getting into an unexpected part of the code after the Invoke (), so I have to dig deeper.
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when you want to close the thread, rather than remove the question and leave a messy thread, I would suggest you just append "[solved]" or "[closed]" to its subject line.
TIA.
Luc Pattyn [Forum Guidelines] [My Articles] Nil Volentibus Arduum
Please use <PRE> tags for code snippets, they preserve indentation, improve readability, and make me actually look at the code.
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i have a script in mql4 language in metatrader software that run this url:
http:
i want to insert this parameters('s' and 'd')in database.
so i build a webservice and a 'Default.asmx' page in visual studio.
what code i should write for inserting these in database?
Regards
modified on Wednesday, January 12, 2011 1:33 AM
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roebuck-code wrote: what code i should write for inserting these in database?
An insert statement. Beyond that, I can't help as this is far too vague. We don't know what database, what version of the .NET runtime, etc, that you are using. One thing though - ensure it's not open to a SQL Injection attack.
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Pete O'Hanlon wrote: We don't know what database, what version of the .NET runtime, etc, that you are using.
data base is sql2000.Visual Studio 2005
do i write a method(methodname) in "Default.asmx" page that get parameters from url and insert these to database?
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If it's an asmx file, then it should be a web service, so you would write a WebMethod in there. Have a read up on traditional web services in .NET to see what you need to do.
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like this?:
[WebMethod]
public void zakhire(string s,string d)
{
string sql = " insert into FX_Forecast2 (Symbol,A) values( '"+s+"','"+d+"')";
OpenDb();
cmd = new SqlCommand(sql, con);
cmd.ExecuteNonQuery();
con.Close();
}
do with writing this code and loading this url(http://aaaa.com/Default.asmx/zakhire?Symbol=+S+&A=+d;) these value will insert in database?
how can i run this url for test in visual studio?(not in mql4)
modified on Monday, January 17, 2011 2:07 AM
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Is there a missing " at the end of that line?
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viaducting wrote: Is there a missing " at the end of that line?
ops..thnQ..I correct it
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Manfred R. Bihy wrote: Is this a repost of this?
no,i think my programming in that post is wrong..
this question is before that method happen.
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Thats a good way to get hacked by a first grader who read up on SQL injection.
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I found the answer:
with Going to web.config and adding this code in system.web section:
<webServices>
<protocols>
<add name="HttpGet"/>
<add name="HttpPost"/>
</protocols>
</webServices>
good luck.
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Hi all,
I want to derive a class from LinkedListNode<t> so that the nodes themselves contain the data values, but cannot as the class is sealed - any reason why this should be so? If I create a standard LinkedList of classes, the classes themselves do not know about the Next and Previous nodes, because the value of each node is stored in LinkedListNode<T>.Value.
Do I need to write my own doubly-linked list to achieve this or can this limitation be overcome? I suspect I'm probably missing something obvious!
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viaducting wrote: any reason why this should be so?
There are probably plenty of reasons the team who created this marked it as sealed. Ask them.
LinkedListNode is just a pointer to the node within the LinkedList, which, as it is a generic collection, can contain any validate object. You don't need to extend LinkedListNode or create your own LinkedList implementation.
I know the language. I've read a book. - _Madmatt
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Under the existing implementation only a LinkedListNode can be used to walk along the list. The data within it cannot access the Next and Previous links. I want to store data that needs to access the adjacent nodes, so I don't think the standard implementation will work unmodified.
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I see two ways for you:
1.
use LinkedListNode as intended, and provide a backlink from your actual node data to the LinkedListNode it belongs to.
2.
roll your own linked list. It isn't that hard.
Luc Pattyn [Forum Guidelines] [My Articles] Nil Volentibus Arduum
Please use <PRE> tags for code snippets, they preserve indentation, improve readability, and make me actually look at the code.
modified on Tuesday, January 11, 2011 9:33 AM
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1. Is the way I am heading via an overloaded LinkedList where all the Add... functions will set this up automatically.
2. I know it isn't hard but I was trying to avoid doing it!
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viaducting wrote: If I create a standard LinkedList of classes, the classes themselves do not know about the Next and Previous nodes
And usually they should not. For example, if I want a LinkedList<invoice>, the Invoice objects I put into the list do not have to know anything about next or previous, this information has nothing to do with Invoice type. Other way, if I created a single Invoce, what would be supposed to be the values of Next and Previous? Should it create a complete linked list for just opening one?
viaducting wrote: Do I need to write my own doubly-linked list to achieve this or can this limitation be overcome?
I don't think it is a limitation. It is a well designed class for a LinkedList. If you need something special, I guess you will have to make a new class, but I'm afraid I cannot give you any further help unless you give us a little more information of what you need to do.
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You might not need to for a list of invoices, but there are other situations where it would be very useful. For example, if you have a list of points representing a polygon it is useful to be able to access the adjacent nodes so that joints can be re-built if one of the points moves.
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Yes, that's why I said "usually". However, I think we are on the same case for points representing a polygon. Point is a well defined class, and Next or Previous have nothing to do with it. This information might make some sense in a Polygon class, but not in the points themselves. Please, tell us something else about what you pretend to do. Maybe some of us can give you a good approach.
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