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Basically I've got 2 files, an .aspx file and a .cs file that holds a class.
I put the 2 files in a folder and opened the folder in Visual Studio, which opens the folder as a project.
The .cs file has a class in it.
the .aspx file references the .cs file, and that line has an error.
The line is
"Product saleProduct = new Product("Kitchen Garbage", 49.99M);"
And Product is the name of the class in the .cs file.
The error for this line is basically not recognizing "product" or not seeing the product class in the .cs file. I'm not sure how to get the .aspx page to see the .cs file/class.
This is an example from a book that I'm studying, and I had to download the files from the book's website.
I'm just not familiar with Visual Studio.
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Put the Product class in the .cs file in a namespace and import that namespace in the .aspx (or .aspx.cs as the case may be).
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Hello Friends,
How to write a article in Codeproject.com
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Looks like you are new to CodeProject. Welcome!
To write an article, take a look at this[^] page. You have posted your message on a wrong forum. Please read the guidelines before you do any posts.
Best wishes,
Navaneeth
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This is a wrong forum to post such a question.
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Hi,
How to retrive emails,attachments from exchange server using C#.NET?
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Read about WebDav[^]. MS exchange server supports webdav and can respond to webdav requests. You need to form a XML format request and send that to server. Work with HttpWebRequest and HttpWebResponse classes.
Best wishes,
Navaneeth
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I am brand new to both C# and Database coding.
I am using the following code as an update Command, and there seems to be an issue with it. At run time, I use the update command here to add a new record to the data base, and getthe error following the code.
Code:
//Declare a reusable update command with parameters.
dataAdapter.UpdateCommand = connection.CreateCommand();
dataAdapter.UpdateCommand.CommandText =
"update EventData " +
"set EventType = ?, UnitNo = ?, Start = ?, End = ?, Derate = ?, Trip = ?, Comments = ? " +
"where ID = ?";
dataAdapter.UpdateCommand.Parameters.Add("EventType", OleDbType.Char, 0, "EventType");
dataAdapter.UpdateCommand.Parameters.Add("UnitNo", OleDbType.Integer, 0, "UnitNo");
dataAdapter.UpdateCommand.Parameters.Add("Start", OleDbType.Date, 0, "Start");
dataAdapter.UpdateCommand.Parameters.Add("End", OleDbType.Date, 0, "End");
dataAdapter.UpdateCommand.Parameters.Add("Derate", OleDbType.Decimal, 0, "Derate");
dataAdapter.UpdateCommand.Parameters.Add("Trip", OleDbType.Boolean, 0, "Trip");
dataAdapter.UpdateCommand.Parameters.Add("Comments", OleDbType.Char, 0, "Comments");
dataAdapter.UpdateCommand.Parameters.Add("ID", OleDbType.Integer, 0, "ID");
Error:
Syntax Error in INSERT INTO statement
Thanks for the help!
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erburrell wrote: At run time, I use the update command here to add a new record to the data base, and getthe error following the code.
Use the INSERT command to add items to a table; UPDATE doesn't add a new record, instead it's used to update an existing record.
I are Troll 
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There's no INSERT INTO in your statement, how do you get that error ?
Besides that, you have to use the actual parameter names instead of a question mark.
update EventData
set EventType = @EventType, UnitNo = @UnitNo ....
where ID = @ID
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Hi again
I want to drop multiple tables from my database starting with the same name.
I've tried this:
SQLcommand = "DROP TABLE WHERE TABLE LIKE = 'a" + identity + "%'";
SqlCeCommand sucuk = new SqlCeCommand(SQLcommand, conn);
sucuk.ExecuteNonQuery();
but it didn't work
My tables start with an "a", and follows by an identity number, then a "year"
I want to drop all the tables with the same identity, what can be the suitable solution can anybody help me please  ?
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Hi,
why don't you look it up in the documentation? just type SQL and the keywords into Google.
e.g. DROP TABLE in SQL[^], as you can see there is no WHERE clause.
However in MySQL one can do "SHOW TABLES LIKE 'a%'"
Luc Pattyn
I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages
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ahah yeah you're right I've tried it and a few guys like me tried this WHERE clause
I couldn't find a proper syntax for C# to drop multiple tables
How can I use this "SHOW" ?
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Emmet_Brown wrote: I couldn't find a proper syntax for C# to drop multiple tables
There is no direct relation to C#, whatever programming language you choose, in the end you are sending strings of SQL commands.
Emmet_Brown wrote: How can I use this "SHOW" ?
I have already told you its all in the documentation, i.e. one Google search away.
I suggest you get your act together.
Luc Pattyn
I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages
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You can query sysobjects to find out which tables match your pattern. Then you have to issue a DROP TABLE command for each of them.
As pointed out, this belongs more to the Database forum.
Cheers,
Vikram. (Cracked not one CCC, but two!)
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Take it to the General Database forum.
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Query the sys.objects (or sysobjects in older versions of SQL Server) to find out the list of tables you want to delete, loop over them, construct DROP TABLE XXX commands dynamically and execute them with the EXEC command.
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hi all
For my Console application in C# I would like to divide the main window area in 2 parts.
#1 for the message to be printed out during application lifetime
#2 for a menu where at least write some command or key to be pressed while the program is running.
How can be sure that one of my for-loop for example writes only in the #1 area without taking too much care of cursor position? Is it possible to define multiple areas of the screen as separate buffers where each text can be written or Console.WriteLine can be called?
Thanks
Mn
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The only way I know to do this, is to store the details of your two parts, and render the whole screen again every time something changes.
Christian Graus
Driven to the arms of OSX by Vista.
Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.
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This is not going to be that easy with .NET. I used to work on such things long ago using FoxPro
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The scenario: Peer-to-peer network through a switch; no DNS, all fixed addresses. Main app establishes a remoting connection (Activator.GetObject) to a marshalled singleton object in a service on another machine. The app reads properties and invokes methods on the remote object. It also subscribes, through a wrapper, to events raised by the remote object. Remoting is configured in the config file on both ends.
What works: All actions initiated by the app. Also, by monitoring the periodic events from the remote object, the app detects loss of connection (whether from physical disconnect or termination of the remote object) and will automatically recover when the object again becomes available. This has been extensively exercised.
What fails: If the app's host machine is not physically connected to the switch until after the app starts, the event subscriptions fail to work. The app gets no notice of this. The remote object gets a "connection actively refused" exception when it invokes the event delegate. 
Already tried: Delaying instantiation of the event wrapper until after the first time the remote host could be successfully pinged. No change.
Please note: EVERYTHING works great as long as the network cable was connected at the time the app was started. All events are properly delivered and all subsequent disconnects are appropriately handled with successful recovery upon reconnect. The only known difference between the working and non-working scenarios is WHEN the network cable was connected to the switch: before or after the app starts.
I'm at a loss for where to look next.  What am I missing? (Also, should I cross-post this to the .NET Framework forum?)
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Hi
I create a windows form control library and use it in my forms;
I want to transfer a variable from my component to my code in form;
How can i do it?
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This is a pretty basic question. How did you create a form control library ?
You can expose values as properties and read them in your form. Or you can expose a delegate that fires when a value is changed.
Christian Graus
Driven to the arms of OSX by Vista.
Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.
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I crete form control library like other !
Is it a hard job?!
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farokhian wrote: Is it a hard job?!
It requires you to write a line or two of code. If you don't know how to create a property ( let alone a delegate ), then I would suggest you buy a basic C# book and read it. I assume this is for a class, or you are teaching yourself. You can't possibly be a paid programmer ? Just buy a book and work through it, don't worry about class libraries if you don't even know basic C#.
Christian Graus
Driven to the arms of OSX by Vista.
Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.
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